"WardsSci000478"

Shiny crystal clusters and crystalline groups, this 'fools gold' is brassy and leaves a black streak.

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Pure, bright yellow, Frasch sulfur.

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Coarse, 'salt and pepper': dark pyroxene and light andesine. Provides perfect representation of an intermediate igneous rock.

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Pure translucent to white, rhombic cleavages, Mohs’ hardness of 3.

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Clear, euhedral points and sections.

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Bright metallic cubic cleavages; lead ore.

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Light gray, compact, hard, opaque, microcrystalline silica mineral.

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Feldspar group; good cleavages of pure soda lime feldspar; most show twinning and labradorescence.

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Feldspar group; calcium end member plagioclase crystals in pyroxene matrix.

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