actinolite

[ ak-tin-l-ahyt, ak-tuh-nl- ]

Phonetic (Standard)IPA

noun

, Mineralogy.

actinolite

/ ækˈtɪnəˌlaɪt /

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

actinolite

/ ăk-tĭn′ə-līt′ /

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: Ca 2 (Mg,Fe) 5 Si 8 O 22 OH 2 .

First recorded in 1825–35; actino- + -lite

C19: from actino- (from the radiating crystals in some forms) + -lite

Actinolite is a green silicate of lime, magnesia, and iron 322 especially common in certain metamorphic rocks.

It is entirely composed of a slaty rock, traversed by numerous veins of Actinolite.

The actinolite slate is dark green, and formed by an almost insensible gradation from the mica slate.

Byssolite, bis′o-līt, n. an olive-green variety of actinolite, in long crystals.

April 24, 2024gallimaufry

[gal-uh-maw-free ]

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