Goldichite

Formula:  KFe(SO4)2 . 4H2O

Origin of name:   For S. Goldich, American mineralogist

 

Crystal system:  Monoclinic

Crystal class:  2/m

Twinning:

Unit cell:

 

Colour:  Pale yellowish green; lavender tint under artificial light

Diaphaneity:

Luster:

Habit:  Crystals prismatic, lath-like; singles and radiating clusters; crusts, fine-grained crystalline

Hardness:  ~ 2.5

Specific gravity:  2.43

Cleavage:  1; {100} perfect

Tenacity:

Streak:

 

Synonyms/varieties:

 

Comments:

 

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