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PRODUCTS BY WEIGHT
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PLASTIC DISPLAY PRODUCTS
PRODUCTS BY WEIGHT
BOX SETS
PLASTIC DISPLAY PRODUCTS
£20.00 £18.00 ex VAT
Anorthosite is a phaneritic, intrusive igneous rock characterized by a predominance of plagioclase feldspar (90–100%), and a minimal mafic component (0–10%) including Pyroxene, ilmenite, magnetite, and olivine. These thin sections exhibit a rock which has been deformed and as such the once large plagioclase crystals have recrystallized to form much smaller crystals.
We provide a full range of igneous, sedimentary, metamorphic and mineral thin sections. Click here to view them. Should you require a microscope, they can be found here.
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This anorthosite slide presents a thin section of an intrusive igneous rock called anorthosite. It is phaneritic in texture and characterized by a high predominance of plagioclase feldspar (90-100%) and a minimal mafic component (0-10%) with pyroxene, ilmenite, magnetite, and olivine. Anorthosite can be classified into Proterozoic and Archaean types based on age.
The thin sections come from Proterozoic material collected in Western Norway Falls. Most Proterozoic anorthosites undergo deformation despite the typically coarse-grained nature of anorthosite plutons. This deformation causes large plagioclase crystals to recrystallize into smaller ones, as shown by our examples. It alters the original grain shape and fabric, resulting in significantly smaller crystals.
The anorthosite slide provides an opportunity to actively study the mineralogy of this rock specimen in detail. Each thin section is 30 microns thick and includes a glass slide measuring 46 x 27 mm with a cover slip. They are supplied in a protective sleeve with a label for microscopy.
We provide a full range of igneous, sedimentary, metamorphic and mineral thin sections. Click here to view them. Should you require a microscope, they can be found here.
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Syenite thin section slide. The thin sections show a dominant feldspar mass ( orthoclase ) with occurrences of hornblende, amphibole and clinopyroxene. Biotite mica may also be present however its occurrence is rare, The thin section is supplied in a protective card sleeve with a label, ideal for microscopy and educational purposes.
Click here to to explore our extensive collection of igneous, sedimentary, metamorphic, and mineral thin sections. We offer a wide range of options to cater to your needs. If you require a microscope, you can find them available here as well.
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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.
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Travertine thin section slide. Travertine is a form of limestone deposited by mineral rich springs, especially hot springs. It is formed by the rapid precipitation of calcium carbonate, often at the margins of a hot spring or in a limestone caves.
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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.
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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.
We provide a full range of igneous, sedimentary, metamorphic and mineral thin sections. Click here to view them. Should you require a microscope, they can be found here.
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Garnet Mica Schist thin section exhibiting textbook strain fabric and alignment of platy minerals within this popular metamorphic rock.This schist is from the Dalradian series, a complicated group of various metamorphic rocks which are dated to the Pre-Cambrian period and is present in both Scotland and Ireland.
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Norwegian gneiss thin section slide exhibiting a dominant felsic composition i.e. quartz and plagioclase with less prominent mafic bands. We collected this material from Evje, Norway. Each section is made to 30 microns thickness and the glass is 46 x 27 mm, ideal for microscopy and educational purposes.
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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.
We provide a full range of igneous, sedimentary, metamorphic and mineral thin sections. Click here to view them. Should you require a microscope, they can be found here.
7 in stock
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 quartz clasts are visible but these have recrystallised to form a fine, interlocking mosaic of quartz within the original grain cast.
4 in 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.
6 in stock
Purbeck Limestone thin section slide exhibiting densely pack shells of varying fauna. This rock is particularly interesting in thin section; numerous shells from varying organisms such as bivalves and gastropods along with numerous signs of mineral replacement and dissolution offers an opportunity to interpret the complex diagenetic history of the rock.
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Torridonian sandstone thin section slide exhibiting a fine grained arenaceous nature. The Torridonian Sandstones date from the Pre-Cambrian & are amongst the oldest rocks to be found in the UK. The section is made to 30 microns thickness and the glass is 46 x 27 mm in size with a cover slip.
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