Formula: (Zn,Mg)SO4 . 4H2O
Origin of name: For R. Boyle
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell: a = 5.95, b = 13.6, c = 7.96, β = 90.3°
Colour: White
Diaphaneity: Transparent to translucent
Luster: Vitreous-dull
Habit: Earthy or reniform
Hardness: ~ 2
Specific gravity: 2.41
Cleavage: None
Tenacity: Uneven fracture
Streak: White
Synonyms/varieties:
Comments:
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