General Information:
Chemical Formula:
NaMg(Al,Fe+++)(C2O4)3·8(H2O)
Composition:
(Molecular Weight = 494.00 gm)
Sodium 4.65 % Na
Magnesium 4.92 % Mg
Aluminum 3.28 % Al
Iron 4.52 % Fe
Hydrogen 3.26 % H
Carbon 14.59 % C
Oxygen 64.77 % O
Empirical Formula:
NaMgAl0.6Fe3+0.4(C2O4)3·8(H2O)
Environment:
Lignite or coal mines.
IMA Status:
Approved IMA 1963
Locality:
Chaitumusuk deposits, Lena River, Siberia.
Name Origin:
Named for Yurii Apollonovich Zhemchezhnikov (1885-1957), Russian geologist.
Physical Properties:
Cleavage:
[0001] Good
Color:
gray green or violet.
Density:
1.69
Diaphaniety:
Transparent to Translucent
Habits:
Acicular - Occurs as needle-like crystals., Fibrous - Crystals made up of fibers., Water Soluble - Water soluble mineral.
Hardness:
2 - Gypsum
Luster:
Vitreous (Glassy)
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