Blödite

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Blödite
Category Mineral
Chemical formula Na2Mg(SO4)2·4(H2O
Identification
Color Colorless, reddish, bluish-green, yellow
Crystal system monoclinic
Mohs Scale hardness 2.5 - 3
Luster Vitreous
Refractive index α = 1.483, β = 1.486, γ = 1.487
Specific gravity 2.23

Blödite is a hydrated sodium magnesium sulfate mineral with formula: Na2Mg(SO4)2·4(H2O). The mineral is clear to yellow in color and forms monoclinic crystals. A synonym for the mineral is bloedite. Blödite is named for German chemist Carl August Blöde (1773-1820) and is found in evaporitic sedimentary environments such as the Great Salt Lake, Utah. The type locality is Ischler Salzberg, Upper Austria.

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