actinolite
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actinolite
[‚ak′tin·ə‚līt] (mineralogy)
Ca2(Mg,Fe)5Si8O22(OH)2 A green, monoclinic rock-forming amphibole; a variety of asbestos occurring in needlelike crystals and in fibrous or columnar forms; specific gravity 3-3.2.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.