Delve into the captivating world of Sedimentary Rocks, where layers of history are preserved within their unique compositions and structures. Our collection of Sedimentary Rocks offers a fascinating glimpse into the geological processes that have shaped our Earth’s surface over millions of years. Each specimen tells a story of ancient environments, deposition, and the gradual transformation of sediments into solid rock.

Embark on a geological journey through time with our captivating collection of Sedimentary Rocks. Whether you are a student, a passionate collector, or an earth science professional, our specimens offer a window into the dynamic forces that have shaped our planet’s surface.

Browse our selection today and witness the diversity and scientific significance of Sedimentary Rocks. Each specimen has been carefully curated to showcase the beauty and geological importance of these remarkable rocks.

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  • Aeolian Sandstone £2.25£6.00 ex VAT

    Specimens of Aeolian Sandstone collected from Lazonby, near Penrith, Cumbria in the UK. This aeolian sandstone is Triassic in age – approximately 200 Ma. It belongs to the group of rocks known as the New Red Sandstone which date from the Permian (280 Ma) into the Triassic. The composition of this sandstone consists solely of spheroidal (millet seed) quartz grains with an iron oxide cement called haematite. It is the presence of this haematite that contributes to the distinct red – orange colouration of these samples. This lithology is typical of an aeolian (wind blown) hot desert environment. Available in multiple sizes, these specimens come supplied in a white card tray with information label.

    We also supply Aeolian Sandstone thin sections for microscope study which are available to buy HERE.

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  • Ashford Black Marble – Derbyshire £2.25£6.00 ex VAT

    Ashford Black Marble samples originate from Ashford-in-the-Water, Derbyshire, UK. Despite its name, this rock surprises many by being classified as a fine-grained Sedimentary Rock instead of a Metamorphic one. This classification is due to its true nature as a dark limestone rather than a genuine marble. Ashford Black Marble earns its reputation for ornamental purposes, showcasing a stunningly shiny black surface when cutting and polishing it. The rock’s origin dates back to the Carboniferous period, and it boasts a generous amount of bitumen, giving rise to its dark grey hue that transforms into a mesmerising glossy black appearance upon polishing. Supplied in various sizes, each specimen comes presented in a white card tray with an accompanying informative label.

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  • Bauxite £2.25£6.00 ex VAT

    Bauxite is a brown or red earthy sedimentary rock and primary ore for aluminium, these mineral specimens come from Antrim, Northern Ireland and are of textbook quality, they are available in various sizes to choose from and will come supplied in a card tray with a data label.

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    276 in stock

  • Boulder Clay £2.25£6.00 ex VAT

    Boulder clay from Yorkshire, UK from the Pleistocene period, shows random sized various clasts within a glacial clay matrix. Formed through various glacial or ice sheet processes, these sedimentary rocks are available in various sizes.

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  • Breccia (Calcrete) £2.25£6.00 ex VAT

    Specimens of Breccia, collected from the Manifold Valley in Staffordshire. Breccia is a term that describes coarse grained sedimentary rocks, with large angular clasts, surrounded by a finer grained matrix. Calcrete binds the clasts in these specimens, forming on calcareous materials in response to climatic fluctuations in arid and semi-arid regions. These specimens are available in multiple sizes and come supplied in a white card tray with information label.

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    40 in stock

  • Breccia (Recent) £2.25£6.00 ex VAT

    Specimens of Breccia, collected from Yorkshire. Breccia is a term that describes coarse grained sedimentary rocks, with large angular clasts, surrounded by a finer grained matrix. These specimens date to the Holocene period, approximately within the last 11ooo years. These specimens are available in multiple sizes and come supplied in a white card tray with information label.

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    40 in stock

  • Brockram Breccia – Cumbria £2.25£6.00 ex VAT

    Brockram Breccia specimens sourced from Hoff, Cumbria, UK. Breccia, a type of clastic sedimentary rock, is characterized by its coarse-grained and poorly sorted nature, containing large angular fragments embedded in a finer-grained matrix.

    Brockram is a basal breccia, composed of cemented limestone and sandstone fragments originating from the Permian period. The Permian was the last period of the Paleozoic era and occurred approximately 299 – 251 million years ago.

    These samples are available in various sizes and are presented in a white card tray along with accompanying information label.

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  • Bunter Sandstone (Sherwood Sandstone) £2.25£6.00 ex VAT

    Specimens of bunter sandstone from Knutsford, Cheshire, UK. This bunter sandstone is a desert sandstone from the Buntsandstein (bunter sandstone) strata. Samples are supplied in a white card tray with an information label and are ideal for collectors of British rocks.

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  • Cannel Coal £2.25£6.00 ex VAT

    Cannel coal by it’s physical morphology and low mineral content is considered to be coal but by its texture & organic matter content it is considered to be oil shale. Although historically the term cannel coal has been used interchangeably.

    We also supply Cannel Coal thin sections for microscope study which are available to buy HERE.

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    200 in stock

  • Cannonball Limestone £2.50 ex VAT

    Specimens of Cannonball Limestone, collected from around the Hartlepool area, in the UK. This is a very distinctive and rare form of limestone known as Cannonball rock. It is part of the Rocker formation; a basin slope deposit which comprises part of the Zechstein Group. This is a highly studied sedimentary formation which dates to the Mid to Late Permian Period. These specimens are small, and come supplied in a 1.5″ x 1.5″ plastic magnifier box with an information label.

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    8 in stock

  • Carstone (Ironstone) £2.25£6.00 ex VAT

    Carstone (sometimes spelt carrstone) is a sedimentary rock which has a distinct, rusty red colour. These particular specimens found in Wesctott, Surrey formed during the Cretaceous period, a friable rock, it is iron rich, obtaining its colour from leaching. Used commonly as a building stone, the samples we have available have various size options and come supplied in a card tray with a label.

    We also supply Ironstone thin sections for microscope study which are available to buy HERE.

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    50 in stock

  • Chalk £2.25£6.00 ex VAT

    Specimens of Chalk, collected from Yorkshire, in the UK. Chalk is a soft, white, porous sedimentary carbonate rock and form of limestone. It forms in reasonably deep marine conditions, by the gradual accumulation of minute calcite plates, known as coccoliths, which shed from micro-organisms called coccolithophores. Additionally, it is not uncommon to find flint or chert nodules embedded in chalk. These specimens are Cretaceous in age, available in multiple sizes, and supplied in a white card tray with information label.

    We also supply Chalk thin sections for microscope study which are available to buy HERE.

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    267 in stock

  • Chalk (Red) £2.25£6.00 ex VAT

    Red chalk is early Cretaceous in age. It is chemically very similar to the later & better known white chalk.

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    70 in stock

  • Chert – Foss Mine £2.25£6.00 ex VAT

    Specimens of chert found in Foss mine, Scotland, UK. Specimens are supplied in a white card tray with an information label.

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    15 in stock

  • Coal – Anthracite £2.25£6.00 ex VAT

    Anthracite coal specimens, a vitreous, high grade coal with a hard and compact nature, these samples are from the Carboniferous coalfields of South Wales, UK and are one of the coals which have fewer impurities and a high carbon contents. Available in optional sizes, each sample will come supplied in a card tray with a label.

    We also supply Anthracite Coal thin sections for microscope study which are available to buy HERE.

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    193 in stock

  • Coal (Bituminous) £2.25£3.50 ex VAT

    Specimens of Bituminous Coal, collected from the Carboniferous deposits in Yorkshire. Bituminous Coal is an organic sedimentary rock, that forms by diagenetic and sub metamorphic compression of peat bog & swamp material. Its primary constituents are macerals: vitrinite, and liptinite. The carbon content of bituminous coal is around 60-80%. The rest consists of residual water, air, hydrogen, and sulphur. These specimens are available in multiple sizes and come in a white card tray with an information label.

    We also supply Bituminous Coal thin sections for microscope study which are available to buy HERE.

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  • Conglomerate – Farringdon £2.25£6.00 ex VAT

    Specimens of Conglomerate, collected from Farringdon, Berkshire in the UK. Conglomerate is a term used to describe a group of coarse grained sedimentary rocks, featuring large well rounded clasts in a finer grained matrix. They were laid down in a high energy environment, either fluvial, alluvial or shallow marine. The roundness of the clasts can be an indicator of the transport distance or the action of sustained erosion. These specimens are available in multiple sizes and come supplied in a white card tray with an information label.

    We also supply Conglomerate thin sections for microscope study which are available to buy HERE.

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    200 in stock

  • Conglomerate (Fossiliferous) – Farringdon £2.25£6.00 ex VAT

    Specimens of fossiliferous conglomerate, collected from Farringdon, Berkshire. The term conglomerate describes a coarse grained, clastic sedimentary rock composed of a substantial proportion of rounded grains. These conglomerate specimens, despite also being from Farringdon, differ from our other clonglomerate (which you can find HERE) due to the prescence of various fossiliferous remains. These different fossil fragments include bryozoa, brachiopods and bivalves. These specimens are cretaceous in age, available in three sizes, and supplied in a white card tray with information label.

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  • Coral Limestone – Anglesey £2.25£6.00 ex VAT

    Specimens of Coral Limestone, collected from Anglesey. Limestone is a common, well known sedimentary rock. It consists of the calcium-rich shells, bones, and skeletons of the fauna that dominated during that period. These specimens date to the Palaeozoic era around 300 million years ago. They were laid down in shallow tropical seas around 300 million years ago, in the Carboniferous. The composition of these specimens is primarily Lithostrotion corals. They are available in multiple sizes and come supplied in a white card tray with an information label.

    We also supply Coral Limestone thin sections for microscope study which are available to buy HERE.

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    50 in stock

  • Cretaceous Sandstone £2.25£6.00 ex VAT

    Specimens of Sandstone, collected from Philpots Quarry, West Sussex, in the UK. This sandstone is from the Wealden Group (Hastings sub-group), which dates it to the Lower Cretaceous. This makes these rocks approximately 110 million years old. This Cretaceous sandstone is yellow to buff in coloured, and particularly fine grained. It exhibits large scale cross bedding, which is indicative of fast flowing tidal currents. It is quite soft , friable and flaggy in places and so is extracted mainly for concreting and building sand. These specimens are available in multiple sizes and come supplied in a white card tray with information label.

    We also supply Cretaceous Sandstone thin sections for microscope study which are available to buy HERE.

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    44 in stock

  • Crinoidal Limestone – Derbyshire £2.25£6.00 ex VAT

    Specimens of Crinoidal Limestone, collected from Derbyshire in the UK. Limestone is a common, well known sedimentary rock. It consists of the calcium-rich shells, bones, and skeletons of the fauna that dominated during that period. It was laid down approximately 350 million years ago in semi tropical seas and comes from the Dinantian epoch of the Lower Carboniferous. This limestone in particular contains crinoids which are a group of ancient marine invertebrates, and part of the sea lily family. Specimens are available in various sizes and come supplied in a white card tray with information label.

    We also supply Crinoidal Limestone thin sections for microscope study which are available to buy HERE.

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    289 in stock

  • Crinoidal Limestone – Morocco £2.25£6.00 ex VAT

    A small hand sample of fossil limestone containing numerous small Scyphocrinites crinoid stem fragments. Crinoids are fossilised sea lilies, these particular sample come from South Morocco. Often the stems are only preserved in fragments as can be seen. Samples measure approx in 3″ size and come in a small card tray with a label.

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    300 in stock

  • Deltaic Sandstone £2.25£6.00 ex VAT

    Specimens of Estuarine Sandstone, collected from Lancashire. Sandstone is a common, well known sedimentary rock, primarily composed of quartz grains. Estuarine sandstone as the name implies was laid down as fine cross bedded deposits at the mouths of rivers. Occasional marine incursions are evident from fossils & ripple bedding. Some of the fine beds are peppered with mica flakes. Specimens are supplied in a white card tray with information label.

    We also supply Deltaic Sandstone thin sections for microscope study which are available to buy HERE.

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    Dolomite £2.25£3.50 ex VAT

    Dolostone or dolomite rock is a sedimentary carbonate rock that contains a high percentage of the mineral dolomite, CaMg(CO3)2. Most dolostones formed as a magnesium replacement of limestone or lime mud prior to lithification. It is resistant to erosion & less soluble than limestone in weakly acidic groundwater. Technically, dolostone has a stoichiometric ratio (reaction & product ratio) of nearly equal amounts of magnesium and calcium. This particular example comes from the Clitheroe area of Lancashire. Specimens are supplied in labelled card trays.

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    Out of stock

  • Fault Breccia £2.25£6.00 ex VAT

    Specimens of Fault Breccia, collected from Great Langdale, Cumbria in the UK. Breccia is a term used to describe a coarse grained sedimentary rock, with large angular clasts, surrounded by a finer grained matrix. The clasts in these specimens are cemented with calcrete which is formed on calcareous materials as a result of climatic fluctuations in arid and semi arid regions. These specimens are fault breccia meaning that unlike other breccia they were formed by tectonic forces making it a tectonite. Available in multiple sizes, each specimen is supplied in a white card tray with information label.

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  • Flint – Devon £2.25£3.50 ex VAT

    Specimens of Flint, collected from South Devon in the UK. Flint, a variety of Chert, is a micro crystalline, sedimentary rock. It is part of the silicate family and has a conchoidal fracture. These specimens display a monochromatic black interior, offset by a distinct white exterior. These specimens are available in various sizes and come in a white card tray with an information label.

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  • Flint – Norfolk £2.25£6.00 ex VAT

    Chert is classified as a sedimentary rock and is a hard cryptocrystalline form of silica. It is found as nodules and bands within the Cretaceous Chalk, with these samples coming from Norfolk in the UK. It is well known for its glassy crystalline texture which allows pieces to be knapped and for this, the rock was used by stone age humans to make various cutting tools and weapons as it often break, leaving sharp edges. The specimens exhibit an earthy brown colour with a waxy lustre and are available in various sizes, which will come supplied in a card tray with an information label.

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    30 in stock

  • Fluorescent Travertine £4.00 ex VAT

    Specimens of Fluorescent Travertine, collected from Yorkshire, UK. Travertine is a sedimentary rock and type of limestone which forms by the rapid precipitation of calcium carbonate, often at the margins of a hot spring or in limestone caves. When presented with shortwave UV light, these specimens fluoresce a pale yellow to bright white in colour. These specimens measure approximately 2 inches in size and come in a white card tray with an information label.

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  • Fossiliferous Mudstone £2.25£6.00 ex VAT

    Fine grained, fissile sedimentary rock containing fossils such as bivalves, ammonites & belemnites from the Jurassic of Yorkshire, U.K.

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  • Fossiliferous Sandstone – Gloucestershire £2.25£6.00 ex VAT

    Rare fossiliferous sandstone from the Llandovery group of the May Hill sandstone, Gloucestershire, UK. HIstorically used as an indicative marker of the upper Llandovery group (upper Silurian), this specimen is of great geological importance, which exhibits fossils of corals and brachiapods. Each specimen comes supplied with a card tray and information label.

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  • Frosterley Marble £2.25£6.00 ex VAT

    Specimens of Frosterley Marble, collected from Harewood Quarry, Co. Durham in the UK. Frosterley Marble is not actually a marble, but rather a black limestone consisting of Carboniferous age fossil corals. This makes it a sedimentary rock. The most famous use of Frosterley Marble is in Durham Cathedral where the ceiling of the Ceiling of the Chapel of Nine Altars has slender column supports composed from this stone. These specimens are available in multiple sizes and come supplied in a white card tray with an information label.

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    60 in stock

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    Ganister £2.25£3.50 ex VAT

    Ganister is a hard, fine grained , silica cemented sandstone. It is commonly, although not exclusively, found as seat earths below Carboniferous Coal Measure deposits & hence may contain root fossils. The name Ganister seems to have arisen in Yorkshire & Derbyshire where it was the local miners’ & quarrymens’ name for roadstone. It was particularly important around Sheffield where it was mined extensively to be used as a refractory liner for coke ovens & furnaces for the steel industry. Sheffield Ganister or Blue Ganister became the type example for this lithology. These particular specimens come from County Durham. They are supplied in labelled card trays.

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    Out of stock

  • Glacial Clay £1.50£2.25 ex VAT

    Specimens of recent glacial clay (boulder clay till) from Beetham, Cumbria, UK. Specimens are perfect for education but may also be ideal for any British rock collectors. Pieces are supplied in a white card tray with an information label.

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    10 in stock

  • Greywacke £2.25£6.00 ex VAT

    Specimens of Greywacke, collected from around Moffat, in Soctland. Greywacke is a type of dark, hard, grey or brown sandstone. It typically displays poor sorting with angular grains of quartz, feldspar & lithic fragments set in a very fine matrix. Greywacke is a turbidite, meaning it forms via deposition from sediment laden currents that move very rapidly downslope through water. These are fairly typical of the margins of continental shelves. These rocks are Silurian in age. Specimens are available in multiple sizes and come in a white card tray with an information label.

    We also supply Greywacke thin sections for microscope study which are available to buy HERE.

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    30 in stock

  • Ironstone – USA £2.00£30.00 ex VAT

    Specimens of Ironstone that have been collected from Breitung Mine, Marquette County, Negaunee, Michigan, USA. These specimens are a deep reddish brown in colour with some specimens exhibiting clear banding. Please note that banding is not visible on all pieces. These specimens are available in very limited supply with three sizes to choose from. They come supplied in a white card tray with information label.

    Additionally we also have one large display piece available, measuring approximately 18cm x 15cm at its widest points. This display specimen exhibits a distinct botryoidal texture on its top surface, making it an intriguing and appealing specimen to add to any collection.

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  • Kimmeridge Clay £2.25£6.00 ex VAT

    Kimmeridge clay is a fine grained sedimentary rock of Jurassic age, it can contain various fossils from invertebrates to large fauna such as dinosaurs and crocodiles. These specimens come from Kimmeridge, Dorest, UK and are available in various sizes.

    We also supply Kimmeridge Clay thin sections for microscope study which are available to buy HERE.

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  • Lignite (Brown Coal) £2.25£6.00 ex VAT

    Specimens of Lignite (Brown Coal), collected from Germany. Lignite is a soft, combustible sedimentary rock which forms by the natural compression of peat material. It has a high carbon content 25 – 35% & a moisture content up to 66%. The high volatile matter content makes it easier to convert into gas and liquid petroleum products than higher ranking coals. It is used almost exclusively for the generation of electricity in countries such as Greece & China. These pieces are Miocene in age. They are available in multiple sizes and come in a white card tray with an information label.

    We also supply Lignite thin sections for microscope study which are available to buy HERE.

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    90 in stock

  • Limestone £2.25£6.00 ex VAT

    Specimens of Limestone, collected from Derbyshire. Limestone is a common, well known sedimentary rock. It consists of the calcium-rich shells, bones, and skeletons of the fauna that dominated during that period. It was laid down approximately 350 million years ago in semi tropical seas and comes from the Dinantian epoch of the Lower Carboniferous. This rock is very pure, about 98% soluble in rainwater (over time) leaving only residual clay. Its uses include aggregate, building stone, the manufacture of cement, paper & calcium carbide. Available in various sizes, each piece comes supplied in a white card tray with information label.

    We also supply Limestone thin sections for microscope study which are available to buy HERE.

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    100 in stock

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    Magnesian Limestone £1.38£2.62 ex VAT

    Magnesian Limestone. A dolomite rich rock from the Permian formations of North Yorkshire.

    We also supply Magnesian Limestone thin sections for microscope study which are available to buy HERE.

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    Out of stock

  • Marl (Red) £2.25£3.50 ex VAT

    Specimens of Red Marl, collected from Westbury upon Severn in Gloucestershire, UK. Marl is a term that describes an unconsolidated sedimentary rock, that consists of clay and lime. This red marl is part of the Keuper Marls which dates to the early Triassic Mercia Mudstone group. It is a calcium carbonate rich mudstone which forms in Sahara-like desert conditions. The red colouration in these specimens comes from the presence of oxidised iron compounds. Specimens are available in multiple sizes and come in a white card tray with an information label.

    We also supply Red Marl thin sections for microscope study which are available to buy HERE.

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  • Marl (Tea Green) £2.25£6.00 ex VAT

    Specimens of Tea Green Marl, collected from Gloucestershire, UK. Marl is a term that describes an unconsolidated sedimentary rock, that consists of clay and lime. This Tea Green Marl is part of the Blue Anchor Formation which dates to the Triassic Mercia Mudstone group. This is known as the Keuper Marls. This lithology typically comprises dolomitic silty to porcelanous mudstone. These specimens are shallow marine in origin. These pieces are available in multiple sizes and come in a white card tray with an information label.

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    50 in stock

  • Millstone Grit £2.25£6.00 ex VAT

    Specimens of Millstone Grit, collected from Horwich, Bolton in the UK. Millstone Grit is part of the sandstone family and ranges from fine to very coarse grained. It is a feldspathic sandstone, interbedded with grey siltstones and mudstones, with subordinate marine shaly mudstone, claystone, coals and seatearths. It is Carboniferous (Namurian) in age and laid down in estuarine to tidal environments. Millstone Grit forms many prominent features throughout the north of England. These specimens are available in multiple sizes and come supplied in a white card tray with an information label.

    We also supply Millstone Grit thin sections for microscope study which are available to buy HERE.

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    86 in stock

  • Mudstone £2.25£6.00 ex VAT

    Specimens of Mudstone, collected from Lancashire. Mudstone is a very fine grained sedimentary rock, that consists of clay minerals and tiny quartz grains. Mudstone lacks a well developed bedding structure or fissility. This lithology is typical of low energy environments, such as tidal flats, lakes or deep marine environments. These specimens date to the Carboniferous period, approximately 359 – 299 million years ago. The specimens are availeable in multiple sizes, and come in a white card tray with an information label.

    We also supply Mudstone thin sections for microscope study which are available to buy HERE.

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    300 in stock

  • Mudstone (Banded) £2.25£3.50 ex VAT

    Specimens of Banded Mudstone, collected from Crummackdale in West Yorkshire, UK. These specimens are known locally as the Moughton Whetstone and are Silurian in age. Whilst their origins are uncertain, experts believe the concentric bands to be Liesegang rings. The mudstone is very hard and fine grained, which makes it an ideal honing stone. These specimens are available in multiple sizes and come in a white card tray with an information label.

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    20 in stock

  • Old Red Sandstone £2.25£6.00 ex VAT

    Specimens of Old Red Sandstone, collected from Gloucestershire in the UK. The Old Red Sandstone describes a suite of sedimentary rocks deposited in a variety of environments primarily during the Devonian period, but also extending back to the late Silurian, and on into the earliest parts of the Carboniferous. Alluvial sediments and conglomerates dominate at its base, then progresses to a combination of aeolian, lakes and river sediments. The familiar red colour of the rocks from the presence of Iron Oxide. These specimens are Lower Devonian in age, fine grained and pinkish red in colour. Available in multiple sizes, they come supplied in a white card tray with information label.

    We also supply Old Red Sandstone thin sections for microscope study which are available to buy HERE.

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    175 in stock

  • Oolitic Iron Ore £2.25£6.00 ex VAT

    Specimens of Oolitic Iron Ore, collected from Zambia. These specimens are unique, distinctive types of iron ore, consisting of concentric layering of small, rounded particles called ooliths. These specimens are red – orange in colour, which is typical of iron rich minerals. They are available in multiple sizes and come in a white card tray with an information label.

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  • Oolitic Limestone – Gloucestershire £2.25£6.00 ex VAT

    Specimens of Oolitic Limestone, collected from Gloucestershire in the UK. Oolitic Limestone is a carbonate rock, that consists mostly of ooliths (or ooids). These are sand-sized carbonate particles (0.25 -2.0mm) built up of concentric shells of precipitated calcium carbonate (CaCO3). These layers form around sand grains or shell fragments that roll around on a shallow sub tropical sea floor, gathering layers of carbonate. Around the Cotswold Hills, the honey coloured stone has been the favoured building material for centuries. Many local picturesque hamlets showcase this. These specimens tend to be a little more friable than the examples from Yorkshire. These specimens are Mid Jurassic in age. They are available in multiple sizes and supplied in a white card tray with information label.

    We also supply Oolitic Limestone thin sections for microscope study which are available to buy HERE.

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    300 in stock

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    Orthoquartzite £2.25£6.00 ex VAT

    Stiperstones Orthoquartzite from the Cambrian period. A very pure, hard, well cemented sandstone. It is normally whitish or pale grey-buff in colour with occasional streaks of impurities. Available in card trays with labels.

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    Out of stock

  • Oxford Clay £2.25£6.00 ex VAT

    Oxford clay from Scarborough, North Yorkshire, a grey to green colour exhibiting a fine grained texture, these rock specimens are Jurassic in age and are available in various sizes.

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  • Pisolite £2.25£6.00 ex VAT

    Specimens of Pisolite, collected from Gloucestershire, UK. Pisolites are sedimentary rocks which consist of pisoliths – concretionary grains which resemble ooids, but always more than 2mm in diameter. These pisoliths often consist of calcium carbonate, but can sometimes of rarer minerals too. These grains are approximately spherical and have concentric layers which can reach reach 10 mm in diameter. These examples date to the Mid Jurassic (Aalenian: 177 – 180Ma). Specimens are available in multiple sizes and come in a white card tray with an information label.

    We also supply Pisolite thin sections for microscope study which are available to buy HERE.

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    6 in stock

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    Portland Limestone £2.25£6.00 ex VAT

    Portland Stone is a variation of limestone which formed during the Tithonian stage of the Jurassic period. It has been quarried since the 14th century, notably on the Isle of Portland, Dorset. This pale rock is sufficiently hard to resist weathering but yet soft enough to carve hence it makes an ideal architectural material. It was famously used for the construction of St. Pauls Cathedral and Buckingham Palace in London. Like most limestone, Portland stone formed in sub-tropical seas where wave action even resulted in the micro oolites visible in some pieces. Specimens are supplied in a labelled card tray.

    We also supply Portland Limestone thin sections for microscope study which are available to buy HERE.

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    Out of stock

  • Puddingstone Conglomerate £1.50£6.00 ex VAT

    Specimens of Puddingstone, collected from Hertfordshire, UK. Puddingstone is a variation of conglomerate, which is term used to describe a coarse grained sedimentary rock, featuring large, well rounded clasts in a finer grained matrix. It dates back to the Paleocene to Eocene period around 56 millions years ago. This particular rock is composed almost entirely of silica and has no porosity, likely contributing to its notorious hardness. This rare rock is only found in quantity at one locality in Hertfordshire. As such, it is becoming exceedingly difficult to obtain. This rock is available in multiple sizes and each piece comes supplied in a white card tray with information label.

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  • Purbeck Limestone £2.25£6.00 ex VAT

    Specimens of Purbeck Limestone, collected from the Isle of Purbeck, Dorset, in the UK. Purbeck Limestone is a fossiliferous limestone that dates from the Upper Jurassic to Lower Cretaceous period. Its deposition environment is a fresh to brackish water environment with occasional marine incursions. It’s characteristic appearance comes from densely packed shells of the freshwater snail Viviparus set in a lime mud matrix. It’s uses include construction as a building and decorative stone which is visible in Canterbury, Lincoln, Salisbury cathedrals & Westminster Abby to name but a few. These specimens are available in multiple sizes and come in a white card tray with information label.

    We also supply Purbeck Limestone thin sections for microscope study which are available to buy HERE.

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    193 in stock

  • Reef Limestone £2.25£6.00 ex VAT

    Specimens of Reef Limestone, collected from Wren’s Nest, Dudley, UK. These specimens are Silurian in age, stemming from the Wenlock Series Limestone and are an example of a death assemblage. A death assemblage is when multiple different fossils, not typically associated with each other, are found together in the same rock. This occurs These reef limestone specimens display a range of fossils including corals, trilobites, broyzoan and brachiopods. These are great educational specimens, ideal for teaching about the geological processes that lead to the formation of death assemblages. These specimens are available in a range of sizes and come supplied in a white card tray with information label. Limited stock available.

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  • Rhaetic Bone Bed £2.25£6.00 ex VAT

    Specimens of Rhaetic Bone Bed, collected from the Aust Cliff area in Gloucestershire, UK. The Rhaetic Bone Bed is part of a transgressional formation from the Upper Triassic. It consists of a conglomerate with a calcite cemented sandy matrix, together with an abundance of teeth, scales and bones. These fossils include; coprolites of aquatic reptiles, fish remains of dipnoans and ganoids, scales especially Gyrolepis, ichthyosaur vertebrae, and even bones from the dinosaur Avalonia. Specimens are available in multiple sizes, and come in a white card tray with an information label.

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    30 in stock

  • Ribbon Banded Mudstone (Shale) £2.25£6.00 ex VAT

    Specimens of Ribbon Banded Mudstone, collected from North Wales. In particular, these specimens are Silurian in age & specifically from the Nantglyn Flag Group of the Denbigh Grit Formation. This largely grey rock shows alternating bands of fossiliferous mudstone and laminated muddy siltstone with subordinate thin pale green to yellowish lenticular bands of calcareous siltstones. These specimens are available in multiple sizes and come supplied in a white card tray with an information label.

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    295 in stock

  • Rock Gypsum £2.25£3.50 ex VAT

    Gypsum is composed of calcium sulphate dihydrate CaSO4·2H2O . the name is derived from the Greek “Gypsos” meaning “chalk or plaster” It forms as an evaporite deposit associated with sedimentary rocks. Gypsum is deposited from lake & sea water but also from hot springs associated with volcanic activity. Pure gypsum is normally white but impurities give it a variety of hues. It is mined extensively for the manufacture of plaster, plaster board, fertilizer & soil conditioner. This example is from the Triassic deposits of Nottinghamshire, U.K. Each specimen is supplied in a labelled card tray.

    We also supply Rock Gypsum thin sections for microscope study which are available to buy HERE.

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    50 in stock

  • Salt Pseudomorph £2.38£6.37 ex VAT

    Specimens of Salt Pseudomorphs on a limy matrix, collected from the Triassic Aust Cliff in Avon, UK. Salt Pseudomorphs serve as important inicators of paleoenvironmental conditions. They typically form in semi arid (dry) climates, where saline water evaporates, which leaves behind cubic salt crystals. These salt crystals later dissolve, occasionally preserving their cubic imprints These specimens are available in multiple sizes and come supplied in a white card tray with an information label.

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    20 in stock

  • Sandstone (Fossiliferous) – Scotland £2.25£6.00 ex VAT

    Specimens of fossiliferous sandstone sourced from Rochdale, UK. However the type locality of this material is Scotland. Samples are supplied in various sizes and come supplied in a card tray with an information label. These specimens are perfect for educational use but the oddly appealing aesthetic the samples have means they would also make a great addition to any rock collection.

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  • Shale £2.25£6.00 ex VAT

    Specimens of Shale, collected from Yorkshire. Shale is a fine grained, clastic sedimentary rock composed of mud. This mud is a mixture of clay mineral flakes and tiny fragments of other minerals, especially quartz and calcite. Shale is characterised by thin laminae, parallel layering or bedding, less than one centimetre in thickness. This makes the rock very fissile. Shales are associated with quiet water deposition, such as in lakes, lagoons or deltas. For these specimens in particular, the depositional environment was deep water marine from the Jurassic formations of the Yorkshire coast. These specimens are available in multiple sizes and come supplied in a white card tray with information label.

    We also supply Shale thin sections for microscope study which are available to buy HERE.

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    177 in stock

  • Shale (Graptolitic) £2.25£6.00 ex VAT

    Dark grey Graptolitic Shale from Scotland or Cumbria. Contains the delicate blade-like fossils of Graptolites. These were small, colonial marine creatures. Please note that the graptolite content of these specimens is variable.

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    20 in stock

  • Shelly Limestone – Gloucestershire £3.50£6.00 ex VAT

    Specimens of Shelly Limestone, collected from Gloucestershire. This is a fossiliferous limestone from the Carboniferous Period, around 350 million years ago. These specimens are buff to grey in colour and highly compact. It is abundant in various marine fossils, including corals, crinoids, brachiopods and bivalves. The Carboniferous Limestone is the main lithology underlying the Forest of Dean basin & also forms the cliffs of the Wye Valley. Specimens are available in multiple sizes and come supplied in a white card tray with information label.

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    1 in stock

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    Shelly Siltstone £2.25£3.50 ex VAT

    A fossiliferous siltstone containing numerous fossil shells of Ordovician (Caradoc) age from the Cheney Longville Flags, Winstanstow, Shropshire. The specimens contain fragments of Orthid Brachiopods, Tentaculites & occasional Trilobite fragments.

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    Out of stock

  • Siltstone £2.25£6.00 ex VAT

    Siltstone is a fine grained clastic rock which may or may not show laminations. Occasionally fossiliferous. This example is from the Carboniferous deposits around Huddersfield, Yorkshire.

    We also supply Siltstone thin sections for microscope study which are available to buy HERE.

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    200 in stock

  • Stromatolite – Bolivia £2.25£8.00 ex VAT

    Specimens of stromatolite, collected from Bolivia. Stromatolites are a term used to describe a range of layered sedimentary formations, predominantly created by photosynthesising microorganisms. Fossilised stromatolites are crucial as they record some of the most ancient life. Stromatolites are created in shallow water environments, where sedimentary grains are trapped, binded and cemented in biofilms through the action of microbial lifeforms. Stromatolites can exhibit a range of different patterns and structures. These specimens are available in three sizes and come supplied in a white card tray with information label.

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  • Stromatolite – France £7.00£10.00 ex VAT

    Specimens of algae stromatolite, collected from France. Stromatolites are a term used to describe a range of layered sedimentary formations, predominantly created by photosynthesising microorganisms. Fossilised stromatolites are crucial as they record some of the most ancient life. Stromatolites are created in shallow water environments, where sedimentary grains are trapped, binded and cemented in biofilms through the action of microbial lifeforms. Stromatolites can exhibit a range of different pattens and structures. These specimens exhibit concentric rings. They measure 3-4″ in size and come supplied in a white card tray with information label.

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  • Torridonian Sandstone £2.25£6.00 ex VAT

    Specimens of Torridonian Sandstone, collected from Torridon, Scotland. These sandstones date from the Pre-Cambrian and are amongst the oldest rocks to be found in the UK. These rocks are part of the Torridonian Supergroup which includes arkoses, shales and conglomerates, and overlie the older Lewisian Rocks. These Torridonian Sandstones are typically hard, with a grain size that ranges from coarse to fine. They often display trough or planar cross bedding which suggests a palaeocurrent flowing from the North West out across large fan deltas. These rocks are dark red to brown in colour, indicating a partly arid (dry) depositional environment. These specimens are available in multiple sizes and come supplied in a white card tray with information label.

    We also supply Torridonian Sandstone thin sections for microscope study which are available to buy HERE.

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    277 in stock

  • Travertine £2.25£6.00 ex VAT

    Specimens of Travertine, collected from Yorkshire,UK. Travertine is a type of limestone which forms by the rapid precipitation of calcium carbonate, often at the margins of a hot spring or in limestone caves. It often has a fibrous or concentric banded appearance. Travertine is typically white or buff in colour, but can range through to orange and brown occasionally. It tends to be much denser and more compact than Tufa, and has notable uses as a decorative stone. Specimens are available in multiple sizes and come supplied in a white card tray with an information label.

    We also supply Travertine thin sections for microscope study which are available to buy HERE.

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    36 in stock

  • Tufa £2.25£6.00 ex VAT

    Specimens of Tufa, collected from Caerys, North Wales. Tufa is a variety of limestone, which forms by the precipitation of carbonate minerals from ambient temperature water bodies. These specimens date to the Quaternary period, specifically, the Flandrian epoch. It forms in fluvial channels or lacustrine environments & subterranian passages (dripstone, stalagmites & stalactites). This rock specimen is a classic tufa, light in weight, spongy, and containing many plant, preserved in the rock. Specimens are available in multiple sizes and come in a white card tray with an information label.

    We also supply Tufa thin sections for microscope study which are available to buy HERE.

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    7 in stock

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