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Microscope thin section slides of limestone breccia from India, showing large clasts of limestone cemented in a matrix. The slides are 30 microns thick and measure 46 x 27 mm in size and have a cover slip of the section along with a protective cardboard sleeve.
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Microscope thin section slides of limestone breccia from India, showing large clasts of limestone cemented in a matrix. Breccia is formed when large angular fragments are cemented together in a matrix of smaller particles with a mineral cement. It is formed by mechanical weathering processes that create angular fragments, if fragments are eroded to become more rounded then the rock formed would be classed as a conglomerate. The slides are 30 microns thick and measure 46 x 27 mm in size and have a cover slip of the section along with a protective cardboard sleeve.
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Magnesian Limestone thin section microscope slide. This material belongs to the Zechstein Formation; a highly studied sedimentary formation which was laid down in the epeiric Zechstein Sea during the Mid to Late Permian Period. This material was sourced around Tadcaster in North Yorkshire and was deposited when the UK was situated at an equatorial latitude.
2 in stock
Gardnos impact breccia are fine examples of a meteorite impact breccia formed approximately 540 million years ago at the Gardnos Crater, Nesbyen, Hallingdal, Norway. Specimens are supplied in a card tray and come with an information label.
Out of stock
Mudstone thin section microscope slide composed of predominantly clay minerals and organic matter with occurrences of silt grade quartz. This material was laid down in a low energy, oxygen starved environment during the Carboniferous Period and it was collected from Lancashire, UK.
2 in stock
Cannel coal thin section microscope slide exhibiting the highly organic nature of this sedimentary rock. This material was obtained from the Alexander open cast pit in Wigan, Lancashire. Ideal for microscopy, petrography & educational use.
5 in stock
Specimens of brecciated hematite found in Cumbria, UK. Specimens are supplied in a white card tray and come with an information label.
Out of stock
Recent Breccia from the Holoceneperiod, found in Yorkshire supplied in 2″ X 2″, 3″x2, 4″x3″ card trays with labels.
40 in stock
This Breccia is a calcrete cemented scree deposit of Pleistocene age from the Manifold Valley in Staffordshire.
40 in stock
Welded tuff thin section slide exhibiting a jumbled mass of irregularly sized broken clasts held in situ by finer ash particles which have become welded together. This material was collected from Cumbria, the original rock is likely rhyolite, and indeed in hand specimen the tuff almost still looks like rhyolite and appears to show a form of banding.
2 in stock
Amygdaloidal basalt thin section slide exhibiting amygdaloids of varying sizes within a fine grained basaltic ground mass. This particular material was collected from the Isle of Skye, Scotland. Each 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
Rhomb porphyry thin section exhibiting the textbook porphyritic texture of this rare igneous rock. The thin section shows a fine grained alkali feldspar groundmass with large phenocrysts of augite. This material was collected near Oslo in Norway.
6 in stock
Lignite thin section slide. Lignite coal and indeed all other varieties of coal are classed as organic sedimentary rocks. It has a high carbon content 25 – 35% & a moisture content up to 66%. The high volatile component of lignite is clearly reflected in the thin section view, particularly when compared with those of higher grade coals.
8 in stock
A thin section of mylonite which was collected from the metamorphic region of Lom, Central Norway. Mylonite is a fine-grained, compact rock produced by dynamic recrystallisation of the constituent minerals resulting in a reduction of the grain size of the rock.
6 in stock
Rhyolite thin section slide exhibiting the fine grained nature of this felsic igneous rock. The thin section shows a silica rich mineral assemblage of fine grained quartz and plagioclase. Accessory minerals present include biotite mica and hornblende. This material was collected from Cumbria, UK.
Out of stock
Granite adamellite thin section slide exhibiting crystals of quartz, biotite and feldspar. We collected this material from the famous Shap Fell quarry, in Cumbria hence the rocks alternative name ‘ Shap Granite ‘.
Out of stock
Cordierite Hornfels thin section microscope slide exhibiting a dark colour and a characteristic none crystalline form. Fine grains fit together like the fragments of a mosaic, this is often referred to as rough pavement or pavement structure. Larger crystals of cordierite can be seen scattered throughout the fine matrix.
3 in stock
Microgranite thin section slide exhibiting the medium grained nature of this intrusive igneous rock. The crystals in microgranite are smaller than those of normal granite indicating that it cooled at a quicker rate.
5 in stock
Glaucophane Schist thin section microscope slide exhibiting a clear fabric and a wonderful blue hue under plane polarised light. This material was collected from the Isle of Anglesey, North Wales. Each section is made to 30 microns thickness and the glass is 46 x 27 mm, ideal for microscopy and educational purposes.
Out of stock
Oolitic limestone thin section slide exhibiting textbook ooid grains, some with a clear nucleus and concentric calcareous layers. These microscope slides supplement the hand specimens nicely and allow for a more detailed view of the ooid grains and an opportunity to intepret the diagenetic history of the rock.
2 in stock
Gabbro thin section exhibiting some of the textbook features one would expect from this coarse, mafic igneous rock. These slides supplement the hand specimens nicely and are useful for interpreting the crystalisation history of the rock.
4 in stock
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