epsomite

epsomite

A mineral with the chemical composition MgSO₄· 7H₂O. Epsomite, or epsom salt, occurs in clear, needlelike, orthorhombic crystals. More commonly it is massive or fibrous, although crystals from salt lakes on Kruger Mountain near Orville, Washington, are reported to be several feet long. Fracture is conchoidal. Luster varies from vitreous to silky. Hardness is 2–2.5 on Mohs scale and specific gravity is 1.68. The mineral has a salty bitter taste and is soluble in water.

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Category: General science
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Industry/Domain: Animals Category: Insects

Glow-in-the-Dark Cockroach

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