Pascoite

Formula: Ca₃V₁₀O₂₈.17H₂O

Origin of name: after locality Pasco Province, Peru

Crystal system: monoclinic

Crystal class: 2

Twinning: 

Unit cell: 

Colour: yellowish orange to dark reddish orange, yellowish brown

Diaphaneity: translucent

Luster: vitreous to subadamantine to dull

Habit: crystals lath-like, minute, rare, granular crusts

Hardness: about 2.5

Specific gravity: 1.87

Cleavage: 1; {010} distinct

Tenacity: 

Streak: yellow

Synonyms/varieties:

Comments: soluble in water