Formula: NaMg(Al,Fe)(C2O4)3 .8H2O
Origin of name: for Yuri Zhemchuzhniov (1885-1957), Russian mineralogist
Crystal system: Hexagonal
Crystal class: Unknown
Twinning:
Unit cell: a = 16.67, c = 12.51
Colour: Smoky green, gray green, violet
Diaphaneity: Transparent to translucent
Luster: Vitreous
Habit: Crystals acicular to fibrous
Hardness: 2
Specific gravity: 1.69
Cleavage: 1; basal fair [0001]
Tenacity:
Streak:
Synonyms/varieties:
Comments: Easily soluble in water
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