General Information:
Chemical Formula:
NaMg2CrSi3O10
Composition:
(Molecular Weight = 367.85 gm)
Sodium 6.25 % Na
Magnesium 13.21 % Mg
Chromium 14.14 % Cr
Silicon 22.91 % Si
Oxygen 43.49 % O
Empirical Formula:
NaMg2CrSi3O10
Environment:
Subhedral grains in graphite nodules in octahedrites.
IMA Status:
Approved IMA 1968
Locality:
Canyon Diablo meteorite, Arizona.
Name Origin:
Named for Evgeny Leonidovich Krinov (1906-1984), Russian student of meteorites.
Physical Properties:
Cleavage:
None
Color:
dark green or emerald green.
Density:
3.38
Diaphaniety:
Subtranslucent to Opaque
Habits:
Microscopic Crystals - Crystals visible only with microscopes., Anhedral Grains - Granular minerals without the expression of crystal shapes,
Hardness:
6-7 - Orthoclase-Quartz
Luster:
Subadamantine
Streak:
greenish white
More details...