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Magmatic dikes in South Dakota
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Subcategories
This category has the following 3 subcategories, out of 3 total.
E
Etta Pegmatite
(1 F)
W
White Cap Pegmatite
(3 C, 3 F)
White Cap Pegmatite intruding schist (Proterozoic; White Cap Mine, east of Keystone, Black Hills, South Dakota)
(4 F)