"WardsSci000444"
4 Results
Ward's Science Essentials® Selenite
Selenite is a Clear gypsum mineral with a moh's hardness of 2.
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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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Ward's Science Essentials® Fluorite
Fluorite is Green Halide mineral with moh's hardness 4.
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