Results 101 to 110 of about 4,204 (176)
GeosciencesPegmatites with miarolitic cavities have not previously been reported from the Larsemann Hills, East Antarctica, and their age and origin remain poorly constrained.
Ivan A. Babenko +6 more
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Origin of the Azubai Be-mineralized pegmatites, Xinjiang Altay: constraints from Li–Hf isotopes
Open GeosciencesThe genetic mechanism of rare-metal pegmatites – whether they form primarily by extreme fractionation of granitic magmas or direct crustal anatexis – remains highly controversial.
Ma Zhanlong, Hai Lianfu, Zhao Shaoqing
doaj +1 more source
The Harding Pegmatite Mine - front cover of booklet [PDF]
, 1975 Photo of front cover of "The Harding Pegmatite Mine" written by Bryan Chakoumakous, published by UNM Department of Geology. Photo shows Juan Romero and one-eyed mule named Beryl emerging from Harding Pegmatite mine.
Chakoumakous, Bryan
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Harding Pegmatite mine - Gilbert Griego and woman [PDF]
, 1980 Unidentified woman and Gilbert Griego at Harding Pegmatite ...
Gilpin, Laura
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Harding Pegmatite mine - Juan Romero and mule [PDF]
, 1953 Juan Romero and one-eyed mule named Beryl emerging from Harding Pegmatite mine.
Gilpin, Laura
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The Layered Aplite-Pegmatite Sheets of Kînâlik, South Greenland, [PDF]
, 1965 A series of low-dipping garnet-bearing interlayered aplite and pegmatite sheets is described from Kînâlik, South Greenland. The sheets are made up of three main rock types: rhytmically layered garnetiferous aplite, megacrysts of perthite-quartz ...
Windley, B., Bridgwater, D.
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Harding Pegmatite mine - private property sign [PDF]
, 1976 Sign on metal pole reading "Harding Pegmatite Mine, Private property;" trees and scrubs in ...
Schumann, M.E.
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Harding Pegmatite mine - hand-cobbing beryl [PDF]
, 1940 Photo of miner at Harding Pegmatite Mine. Caption reads: "Hand-cobbing beryl. In background, spodumene lasts in quarry wall.
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Pegmatite against granite. [PDF]
, 2019 Muscovite pegmatite in lower part of photo is in sharp contact with fine-grained granite at the top of the photo. Pavement outcrop in trail across open ledges with view to west.
Berry, Henry N, IV
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Variation in Perthitic Microcline From a Zoned Pegmatite [PDF]
, 1964 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 ...
Tullis, Terry E.
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