Noun Actinolite Definition and Examples


Noun:

Actinolite

Pronunciation:

/akˈtɪnəlʌɪt/

Definition:
1.

noun

A green mineral of the amphibole group containing calcium, magnesium, and iron and occurring chiefly in metamorphic rocks and as a form of asbestos.
  1. 'Amosite, fibrous anthophyllite, fibrous tremolite, fibrous actinolite, and crocidolite are amphiboles, double-chain silicates, which observed microscopically look like sharp needles.'
  2. 'They have a mineralogical association of quartz, diopside, actinolite, plagioclase and K-feldspar.'
((n.) A bright green variety of amphibole occurring usually in fibrous or columnar masses.)


Origin:
Late 18th century: from Greek aktis, aktin- ‘ray’ + lithos ‘stone’ (because of the ray-like crystals).

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