Actinolite Definition

ăk-tĭnə-līt
noun
A greenish variety of amphibole.
American Heritage
A dark-colored, often greenish amphibole, Ca2(Mg, Fe)5(Si8O22)(OH)2, commonly found in schists and marbles.
Webster's New World
A greenish amphibole mineral, Ca2 (Mg,Fe)5 Si8 O22 (OH)2 , that occurs in several forms, including a fibrous form that is a variety of asbestos.
American Heritage Medicine

(mineralogy) A mineral with monoclinic crystals of the chemical formula Ca2(Mg,Fe)5Si8O22(OH)2, belonging to the amphibole group.

Wiktionary
other
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.
American Heritage Science
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Other Word Forms of Actinolite

Noun

Singular:
actinolite
Plural:
actinolites

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