Millstone Grit. A coarse grained Carboniferous (Namurian) sandstone from the North of England.
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Milllstone Grit is a fine- to very coarse-grained feldspathic sandstones, interbedded with grey siltstones and mudstones, with subordinate marine shaly mudstone, claystone, coals and seatearths. It is Carboniferous ( Namurian) in age & laid down in estuarine to tidal environments. Millstone Grit forms many prominent features throughout the north of England. It’s well cemented structure has made it an ideal building stone for the characteristic terrace cottages & mills of the area prior to the mass use of bricks. As the name implies, it was the preferred lithology to make millstones. This example was collected near Horwich, Bolton. Specimens are supplied in labelled card trays. it can also be purchased by weight in 1kg bags.
2" x 2", 3" x 2", 4" x 3"
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Millstone grit thin section slide exhibiting the coarse and siliceous nature of this British Carboniferous coarse sandstone. The section is made to 30 microns thickness and the glass is 46 x 27 mm in size with a cover slip. Supplied in a protective card sleeve with a label, ideal for microscopy.
Out of stock
Carboniferous Millstone Grit found in Lancashire, once a popular building material due to its strength. Available by weight, comes in a 1 kg bag.
Out of stock
Puddingstone conglomerate is a rare sedimentary rock from Hertfordshire, UK which formed during the Paleocene to Eocene period. Composed of rounded flint clasts within a silica matrix, this rock is quite hard and breaks with conchoidal fractures. Formed through erosion of flint pebbles which were later cemented by sand and silica, it is an excellent representation of conglomerate, detailing rounded clasts within a matrix. The specimens are available in 4 sizes and come supplied in a card tray with a label.
298 in stock
Geo Marker marking spray for use within the building, construction road, civil engineering, surveying and mining sectors, this spray can be applied to asphalt, concrete, masonary, stone, plaster, wood and even earth whether the surface is wet or dry. Can be used in temperatures down to -20 °C, the spray can utilises a special cap which means 100% of the can will be emptied and won’t give you painted fingers, the paint will also last upto 9 months and can be applied to both wet and dry surfaces. Each can hold 500 ml of paint and is available in 9 bright fluorescent colours.
Out of stock
Carboniferous ( Dinantian ) Limestone from the White Peak area of Derbyshire.
100 in stock
Silverline hammer holster, suitable for use with a variety of strike tools and geological hammers. The holster is made from heavy duty suede leather on which a steel cradle is attached, the cradle has a swing point, this allows the hammer to move and tilt according to your body position, ensuring that what ever angle you are at, whether standing, leaning or laying down, the hammer will remain upright at all times. Slots at the top of the holster allow you to attach it to your belt, keeping your tool by your side at all times. Suitable for use with our range of geological hammers which can be found here.
24 in stock
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.
50 in stock
Species Name: Nummulites Laevigatus in limestone matrix
Age: Eocene, Cuisian Stage, approximately 47 million years ago
Location: Soissons, Aisne, France
Nummulites laevigatus foraminifera fossil specimens within a beige white limestone matrix, these micro fossils are excellent examples of these amoeboid protists, they exhibit exceptional details, dated to the Eocene period, they were found in Soissons, Aisne, France. Available in various sizes and supplied in a card tray with a label.
Plastic plate stands which are ideal for holding mainly flat items, such as plates, agate slices and other cut and polished mineral slabs. However, other items fit on them just as well, the parts come in two pieces and twist together making a single, robust clear stand. These stands are small and measure 50 mm tall with a 70 x 40 mm base.
Greywacke, a hard, grey, poorly sorted sandstone of Silurian age.
30 in stock
Pea Grit (pisolite) is the name given to a Middle Jurassic limestone which is characterised by its large spherical grains or Pisoids, similar to ooliths. Specimens are supplied with a labelled card tray.
6 in stock
Iceland spar mineral specimens from Santa Eulalia, Chihuahua, Mexico, samples are crystal clear, exhibit perfect rhombic shape and excellent double refraction. They are available in 2 sizes only and will come supplied in a card tray with a label.
20 in stock
Kaolinite is a clay mineral specimen which is used extensively in industry, it is a soft, fragile mineral and is also known as China clay. Formed form the breakdown of feldspar minerals, these samples come from Cornwall, UK and is available in 2 sizes, supplied in a card tray with a label.
Out of stock
Tea Green Marl. A greenish grey dolomitic mudsone from the Triassic of Gloucestershire.
50 in stock
Hornblende in massive form, collected from Norway, these mineral specimens exhibit a platy cleavage, black to dark green colouration and a dark grey streak. The samples are available in various sizes, show excellent vitreous lustre and will come supplied in a card tray with a label.
Out of stock