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Coal is formed within anoxic environments from compressed organic matter, and a worldwide source of fuel. Its vitreous sheen makes Bituminous Coal easy to distinguish from other coals and sedimentary rocks Allows students to get a close up look at a material that powers the world. Excellent for...
Pumice is formed from the frothy lava that a volcanic explosion creates. As the frothy lava cools, it hardens as a light weight rock that is filled with small gas bubbles. Because this rock is so porous and light, it can actually float on water Perfect for demonstrating the effect of vesicles on...
Labradorite is a variety of plagioclase feldspar, intermediate between anorthite and albite. Notable about this species of feldspar is its potential for iridescence Ideal for identification & classification exercises. Samples with clean crystal faces, when exposed to light, have a tendency to gleam...
A fun way to explore the variety of techniques that geologists use to identify rocks and minerals Test mineral hardness, streak color, magnetic properties, appearance, and effervescence to identify different minerals and mineral content within rock specimens Includes seven essential tools - reusable...
Slate is very lightly metamorphosed and well-foliated. This appearance often makes it difficult to distinguish from its parent rock, shale. The two can be told apart by the difference in pitch when struck Ideal for identification & classification exercises. Slate is perfect for lessons on...
The large, angular clasts in breccia make it possible to confidently ascertain the depositional history of the rock Ideal for identification & classification exercises. This contrasts well with conglomerate, a very similar rock with clasts that have traveled a long ways from their provenance. This...
Halite is commonly known as table salt. This soft, white to transparent mineral grows into cleavable cubes Useful for lessons in cleavage planes and how evaporite deposits form in nature. This mineral is an excellent example of cubic cleavage - when broken Halite will continually break into smaller...
Pack of 12 Hornfels samples approximately 1" (3cm) in size Formed at the baked contact between an intruding igneous body and the surrounding rock Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements Great for...
Basalt makes up a large majority of the earth's oceanic crust. Formed quickly from a magma that is rich in iron, basalt exhibits a dark color and small crystal size The perfect example of an aphanitic igneous rock. Useful for lessons in igneous rock classification and identification. This set of...
A fun introduction to the world of geology through igneous rocks! Igneous rocks are formed when magma or lava cools and solidifies. Each Tech Cut specimen is selected and hand processed, ensuring each sample exhibits defining features. Set includes twelve different igneous rocks - Quartz Point,...
Though similar to calcite, the inclusion of magnesium in the chemistry of Dolomite makes it a more robust & stable mineral Ideal for learning about physical and chemical properties. Great for having students compare with calcite - a challenging but beneficial exercise. This set of twelve samples is...
Includes twelve streak plates. Great for group activities Used to determine a mineral's color in powder form, or to identify the mineral content of a rock. Great for geology and earth science classrooms Streak plates can be cleaned and reused again and again Each plate is made of unglazed porcelain...
12 rock gypsum specimens approximately 1" (3cm) in length Formed from the lithification of sulfate evaporate deposits Perfect size for use in classroom identification labs and exercises, corresponding well with Next Generation Science Standards evidence statements Useful for rock/mineral comparison...
Pack of 12 Corundum samples approximately 1" (3cm) in size Great for studying mineral hardness and crystal habit - only diamond is harder! Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements Ideal for exercises...
Pack of 12 Argillaceous shale samples approximately 1" (3cm) in size Small clast size indicates deposition in a low-energy environment such as a shallow lake or slow-moving river Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards...
Muscovite mica is a mineral that forms from cooling magma. It forms in thin sheets that are individually weak, but comprehensively strong. Mica is a major component in a plethora of different rocks, including igneous, sedimentary, and metamorphic rocks Mica's thin and layered structure is perfect...