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Classroom Minerals
Mineral specimens are cut in a variety of sizes to meet various user needs, with common uses including identification on the part of students, displays to be used during lectures and demonstrations, or as chips for convenient physical identification tests in labs. These mineral specimens also demonstrate a number of classic geological features, such as cleavage, and collections of minerals can be used to test the Mohs hardness of other minerals and compare them.
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Ward's® Anorthite
Feldspar group; calcium end member plagioclase crystals in pyroxene matrix.
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Ward's® Anorthoclase
Feldspar group; greenish gray alkali feldspar, coarse crystalline, some iridescence.
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Ward's® Corundum
Crystals and crystal sections up to 1", Mohs’ hardness of 9.
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Pyrite (Best Grade)
Shiny crystal clusters and crystalline groups, this 'fools gold' is brassy and leaves a black streak.
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Ward's® Sphalerite (Crystalline)
Dark brown to black; polycrystalline zinc ore.