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Conditions of origin of natural diamonds of peridotite affinity

✍ Scribed by Boyd, F. R.; Finnerty, A. A.


Book ID
118670505
Publisher
American Geophysical Union
Year
1980
Tongue
English
Weight
721 KB
Volume
85
Category
Article
ISSN
0148-0227

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Olivine, orthopyroxene and garnet grains belonging to the peridotitic suite of mineral inclusions in natural diamonds typically show compositions poorer in Ca and A1 and richer in Mg and Cr than the same minerals in peridotite nodules in kimberlite. Other features suggest the crystallisation of diam