Glushinskite

Formula:  Mg(C₂O₄) ^.2H₂O

Origin of name:  For P. I. Glushinskii, Russian geologist

Crystal system:  Monoclinic

Crystal class:  2/m

Twinning:

Unit cell: a = 12.675, b = 5.406, c = 9.984, β = 129.45°

Colour:  Creamy white, white, colourless

Diaphaneity: Translucent

Luster: Subadamantine

Habit:  Crystals distorted pyramidal, with curved and striated faces, in platy aggregates

Hardness: 2

Specific gravity:  1.85

Cleavage:  None

Tenacity:

Streak:

Synonyms/varieties: Magnesium oxalate

Comments: Soluble in water