Formula :
MgFe3+[OH/(SO4)2] * 7 H2O
System: monoclinic Hardness:2-2½ Rarity:rare
Strunz id:VI/D.10-10 -
VI - Sulfates
Name origin: From the Greek βότρυς = "bunch of grapes," and γευυăυ = "to bear," in allusion to the appearance of the original botryoidal and stalactitic masses found at Falun, Sweden.-
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