Actinolite

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  1. A metamorphic ferromagnesian mineral; an asbestos.
    Source: Leet, L. Don. 1982. Physical Geology, 6th Edition. Englewood Cliffs, NJ: Prentice-Hall
  2. A monoclinic mineral, 2[Ca2 (Mg,Fe)5 Si8 O22 (OH)2 ] in the hornblende series Mg/(Mg+Fe2+ ) = 0.5 to 0.89 of the amphibole group; forms a series with tremolite; green, bladed, acicular, fibrous (byssolite asbestos), or massive (nephrite jade); prismatic cleavage; in low-grade metamorphic rocks. Syn: actinote; strahlite. CF: tremolite
    Source: Dictionary of Mining, Mineral, and Related Terms


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