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Volume 1 Issue 4
Dec.  1999
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Cui Wenyuan, Shi Guanghai, Lin Ying. STUDY ON KOSMOCHLOR-JADE AND RELATED AMPHIBOLE-JANE （ROCK）[J]. Journal of Gems & Gemmology, 1999, 1(4): 16-22.
Citation: Cui Wenyuan, Shi Guanghai, Lin Ying. STUDY ON KOSMOCHLOR-JADE AND RELATED AMPHIBOLE-JANE （ROCK）[J]. Journal of Gems & Gemmology, 1999, 1(4): 16-22.
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STUDY ON KOSMOCHLOR-JADE AND RELATED AMPHIBOLE-JANE （ROCK）

  • Department of Geology, Peking University, Beijing, 100871

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  • Received Date: October 28, 1999
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  • Kosmochlor-jade and related amphibole-jade (rock) in Longken, Myanmar are studied. Their types, texture, mineral chemistry, X-ray powder diffraction spectrum，chemical composition and REE of whole rocks, etc， are elucidated. The protoliths of kosmochlor-jade and related amphibole-jade (rock) in Longken, Myanmar are considered as peridotites, chromite-bearing peridotites, or chromite bodies, respectively. At high or ultrahigh pressure, those protoliths reacted with SiO2, Na2O and Al2O3 melt through a series of metamorphism. Chromite was replaced mainly by kosmochlor, astridite or chromium-bearing jadeite, while peridot was replaced by chromite. As a result, there might be a contin-uous variation from amphibole-jade (rock) to kosmochlor-jade.
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    • References (11)
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