General Information:
Chemical Formula:
Mg2SiO4
Composition:
(Molecular Weight = 140.69 gm)
Magnesium 34.55 % Mg
Silicon 19.96 % Si
Oxygen 45.49 % O
Empirical Formula:
Mg2(SiO4)
Environment:
Chondrite meteorites. Polymorph of forsterite and replaces ferroan forsterite grains.
IMA Status:
Approved IMA 1969
Locality:
Tenham, Austalia, chondrite.
Name Origin:
Named for Alfred Edward Ringwood (1930-), petrologist, University of Canberra, Australia.
Physical Properties:
Color:
blue gray, colorless, light violet, purple, or smokey gray.
Density:
3.9
Habits:
Microscopic Crystals - Crystals visible only with microscopes., Anhedral Grains - Granular minerals without the expression of crystal shapes,
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