Pyroxenes in the blueschist facies of California

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ID: 297961
1968
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Abstract
In the Fransciscan Formation pure end-member jadeite is restricted to metasomatized leucocratic masses within serpentinite. Jadeitic pyroxene coexists with quartz in metagraywackes, and omphacite or acmitic pyroxene are present in metabasalts; metacherts contain acmitic pyroxene. Chemical, optical, and X-ray parameters of pyroxenes from representative rocks show strong variations related to rock composition. Experimentally, jadeite and related pyroxenes are favored by high pressures. In silica-deficient serpentinites, pure jadeite forms, whereas in other rock types, under the same metamorphism, where excess silica is present, only jadeite pyroxene and omphacite are stable.
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openalex_W2334781162 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Robert G. Coleman, J. R. Clark
Journal american journal of science
Year 1968
DOI
10.2475/ajs.266.1.43
URL
https://ajsonline.org/article/59219.pdf
Keywords Keywords not found

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