Kaersutite from San Carlos, Arizona, with Comments on the Paragenesis of This Mineral
作者： Brian Mason
DOI: 10.1180/MINMAG.1968.283.036.12
关键词:
摘要: A 230 g kaersutite xenocryst from basalt at San Carlos, Arizona, has the composition SiO~ 40'10 %, TiO~ 4"44, A120 a 14"53, Fe203 3"24, FeO 10'05, MaO 0"14, Mg0 11'00, CaO 11"06, Na20 2"99, K20 1'62, H~O-0"73, H ~ O 0"10; D = 3"28; 1"680, fl 1"700, ~, 1-715; 9'858/~, b 18"063~, c 5"315~, 105 14'. Kaersutite occurring as xenocrysts in basic volcanic rocks and tufts, phase garnet-pyroxene xenoliths fl'om such rocks, is probably of upper mantle origin, may be important potassium-bearing this region.
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