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actinolite

A monoclinic mineral, 2(Ca2(Mg,Fe)5Si8O22(OH)2) in the hornblende series Mg/(Mg+Fe2+) = 0.5 to 0.89 of the amphibole group; forms a series with tremolite; 42 green, bladed, acicular, fibrous (byssolite asbestos), or massive (nephrite jade); prismatic cleavage; in low-grade metamorphic rocks.

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  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 分数
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