General Information:
Chemical Formula:Na2MgB12O20·8(H2O)
Composition:(Molecular Weight = 628.08 gm)Sodium 7.32 %
NaMagnesium 3.87 %
MgBoron 20.65 %
B Hydrogen 1.93 %
H Oxygen 66.23 %
O bword://Ti">TiIron 6.71 %
FeOxygen 38.47 %
O Empirical Formula: Mg0.75Fe2+0.25Ti2O5
Environment:Ti oxides associated with deep-seated intrusives.
IMA Status:Approved IMA 1970
Locality:Tranquillity Base, Moon. Smoky Butte, Garfield Co., MT,
Name Origin:Named after the three astronauts of Apollo 11: Neil A. ARMstrong, Edwin E. "Buzz" ALdrin, and Michael COLlins.
Physical Properties: Color:gray.
Density:4
Diaphaniety:Opaque
Habits:Granular - Generally occurs as anhedral to subhedral crystals in matrix., ,
Hardness:6 - Orthoclase
Luster:Metallic
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