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Potential for diamond in kimberlites from Michigan and Montana as indicated by garnet xenocryst compositions

Economic Geology

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Abstract

The Williams kimberlite in north-central Montana and the Lake Ellen kimberlite in northern Michigan contain diagnostic xenoliths and xenocrysts which indicate that diamonds may be present. To date, however, no diamonds have been reported from either locality. In this study, particular compositions of garnet xenocrysts which are associated with diamond elsewhere were sought as an indication of the potential for diamond in the Williams and Lake Ellen kimberlites. For this study, garnets were carefully selected for purple color in order to increase the chance of finding the subcalcic chrome-rich compositions that are associated with the presence of diamond. -Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Potential for diamond in kimberlites from Michigan and Montana as indicated by garnet xenocryst compositions
Series title:
Economic Geology
Volume
83
Issue:
2
Year Published:
1988
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
428
Last page:
432
Number of Pages:
5