"WardsSci000478"
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Ward's® Science Essentials® Dolomite
White to gray, medium to coarse-grained, crystalline.
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Ward's® Oligoclase
Feldspar group; white-to-gray cleavages of sodic plagioclase; some show twinning.
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Ward's Science Essentials® Gypsum
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Massive sedimentary gypsum with a moh's hardness 2..
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Ward's Science Essentials® Graphite
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A textbook example of pure crystalline carbon which is extermely soft.
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Ward's Science Essentials® Hornblende
Hornblende is a dark amphibole group mineral, perfect for teaching Bowen's reaction series.
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Ward's Science Essentials® Milky Quartz
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Massive white quartz with a moh's hardness 7.
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Ward's Science Essentials® Talc
Talc is the softest know mineral with a moh's hardness of 1, and composed of clay.
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