Formula: CuSO4 . 5H2O
Origin of name: From Greek for copper and flower
Crystal system: Triclinic
Crystal class: -1
Twinning: Rare on {010}, cruciform
Unit cell: a = 7.16 Ǻ, b = 10.71 Ǻ, c = 5.96 Ǻ, α = 97.6°, β = 125.3°, γ = 94.3°
Colour: Pale blue to deep blue, greenish blue, greenish
Diaphaneity: Transparent
Luster: Vitreous to resinous
Habit: Crystals short prismatic or thick tabular; stalactitic; fibrous veinlets; massive, granular
Hardness: 2.5
Specific gravity: 2.286
Cleavage: 2; {1-10} perfect, {110} traces
Tenacity:
Streak: Colourless
Synonyms/varieties:
Comments: Soluble in water
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