- a variety of amphibole, occurring in greenish bladed crystals or in masses.
Origin of actinolite
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for actinolite
The actinolite slate is dark green, and formed by an almost insensible gradation from the mica slate.In the Arctic Seas
Francis Leopold McClintock
Byssolite, bis′o-līt, n. an olive-green variety of actinolite, in long crystals.
Actinolite is a green silicate of lime, magnesia, and iron 322 especially common in certain metamorphic rocks.Geology
William J. Miller
It is entirely composed of a slaty rock, traversed by numerous veins of Actinolite.A Guide to the Mount's Bay and the Land's End
John Ayrton Paris
- a green mineral of the amphibole group consisting of calcium magnesium iron silicate. Formula: Ca 2 (Mg,Fe) 5 Si 8 O 22 (OH) 2
C19: from actino- (from the radiating crystals in some forms) + -lite
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- A greenish variety of amphibole. Actinolite is a monoclinic mineral, and occurs in long, slender, green needlelike crystals, or in fibrous, radiated forms in metamorphic rocks. Chemical formula: Ca2(Mg,Fe)5Si8O22OH2.
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