Ransomite

Formula: CuFe2(SO4)4.6H2O

Origin of name: for F. Ransome, American geologist

 

Crystal system: monoclinic

Crystal class: 2/m

Twinning:

Unit cell: 

 

Colour: sky-blue

Diaphaneity: transparent

Luster: vitreous, pearly on cleavage

Habit: crystals acicular, in radiating tufts and crusts

Hardness: 2.5

Specific gravity: 2.63

Cleavage: 1; {010} perfect

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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