Zincroselite

Formula: Ca₂Zn(AsO₄)₂.2H₂O

Origin of name: From Zinc and Roselite

Crystal system: Monoclinic

Crystal class: 2/m

Twinning:

Unit cell: a = 5.832, b = 12.889, c = 5.644, β = 107.72°

Colour: Colourless to white

Diaphaneity: Transparent

Luster: Vitreous

Habit: Intergrown lath-like crystals in aggregates to 4 x 5 x 12 mm

Hardness: 3

Specific gravity: 3.75

Cleavage: none

Tenacity:

Streak: White

Synonyms/varieties:

Comments: Zn analogue of roselite; dimorphous with gaitite