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epidote
[ ep-i-doht ]
noun
- a mineral, calcium aluminum iron silicate, Ca 2 (Al, Fe) 3 Si 3 O 12 (OH), occurring in green prismatic crystals.
epidote
/ ˌɛpɪˈdɒtɪk; ˈɛpɪˌdəʊt /
noun
- a green mineral consisting of hydrated calcium iron aluminium silicate in monoclinic crystalline form: common in metamorphic rocks. Formula: Ca 2 (Al,Fe) 3 (SiO 4 ) 3 (OH)
epidote
/ ĕp′ĭ-dōt′ /
- A yellowish-green or blackish-green monoclinic mineral. Epidote occurs as formless grains or as prism-shaped crystals, and is found in limestones that have undergone slight metamorphism or in igneous rocks. Chemical formula: Ca 2 (Al, Fe) 3 (SiO 4 ) 3 OH.
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Derived Forms
- epidotic, adjective
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Other Words From
- ep·i·dot·ic [ep-i-, dot, -ik], adjective
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Word History and Origins
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Word History and Origins
Origin of epidote1
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Example Sentences
Crystalline epidote, and whitish quartz, apparently from a vein.
Purplish-brown epidote, with small nests or concretions of green epidote and quartz; forming a sort of amygdaloid.
Conglomerate, containing angular fragments of yellowish-grey quartz-rock, in a base of compact epidote.
A nearly uniform greenish compound of epidote intimately mixed with quartz, also occurs at this place.
Whether the colour depends upon epidote, chlorite, or some other substance, we were not able to determine.
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