Wendwilsonite

FormulaCa2(Mg,Co)(AsO4)2·2H2O

Origin of name: for Wendell E. Wilson (1946-), mineralogist, editor, and publisher of the Mineralogical Record

 

Crystal system: Monoclinic

Crystal class: 2/m

Twinning: on {100}, possibly also on {001}, {111} and {010}

Unit cell: a = 5.806, b = 12.912, c = 5.623, β = 107.4°

 

Colour: Pale to deep pink, red

Diaphaneity: Transparent

Luster: Vitreous

Habit: Crystals stout prismatic

Hardness: 3 to 4

Specific gravity: 3.52

Cleavage: 1; {010} perfect

Tenacity: Uneven fracture

Streak: Light pink

 

Synonyms/varieties:

 

Comments: series with roselite

 

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