Article Title
Document Type
Article
Publication Date
1964
Keywords
Pegmatites--Black Hills (S.D. and Wyo.)
Abstract
Quantitative microscopic and chemical anaylses of 12 specimens of microcline, most of them perthitic, from the zoned Hugo pegmatite in the Black Hills near Keystone, South Dakota, have yielded data that can be used to estimate the temperatures of crystallization at successive stages in the formation of the pegmatite. The determined temperatures of crystallization range from 565°C in zone 3a, near the margin of the pegmatite, to 280°C in zone 7, the core.
First Page
47
Last Page
50
Recommended Citation
Tullis, T. E.
(1964).
Variation in Perthitic Microcline From a Zoned Pegmatite.
Journal of the Minnesota Academy of Science, Vol. 32 No.1, 47-50.
Retrieved from https://digitalcommons.morris.umn.edu/jmas/vol32/iss1/12
Primo Type
Article