tremolite

trem·o·lite

T0338200 (trĕm′ə-līt′)n. A white to dark gray or greenish amphibole mineral, Ca₂Mg₅Si₈O₂₂(OH)₂, that occurs in several forms, including a fibrous form that is a variety of asbestos.

[French trémolite, after Tremola, a valley in the Swiss Alps.]

tremolite

(ˈtrɛməˌlaɪt) n (Minerals) a white or pale green mineral of the amphibole group consisting of calcium magnesium silicate. When occurring in fibrous habit, it is used as a form of asbestos. Formula: Ca2(Mg,Fe)5Si8O22(OH)2[C18: from Tremola, name of Swiss valley where it was found + -ite]

trem•o•lite

(ˈtrɛm əˌlaɪt)

n. a whitish amphibole mineral, Ca₂Mg₅Si₈O₂₂(OH)₂, usu. occurring in bladed crystals. [1790–1800; after Tremola, valley in Switzerland] trem`o•lit′ic (-ˈlɪt ɪk) adj.

Thesaurus

Noun

tremolite - a white or pale green mineral (calcium magnesium silicate) of the amphibole group used as a form of asbestosamphibole group - a group of minerals with similar crystal structures containing a silicate chain and combinations of chiefly sodium and calcium and magnesium and iron and aluminumasbestos - a fibrous amphibole; used for making fireproof articles; inhaling fibers can cause asbestosis or lung cancer

tremolite

tremolite:

see amphiboleamphibole
, any of a group of widely distributed rock-forming minerals, magnesium-iron silicates, often with traces of calcium, aluminum, sodium, titanium, and other elements.
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Tremolite

(named for the Tremola Valley in the southern Swiss Alps), a monoclinic amphibole, Ca₂Mg5[Si₄O₁₁](OH,F)₂. Admixtures of Na, Fe, Mn, and Cr are regularly distributed in the octahedral positions of the structure, and admixtures of Al and P are located in the tetrahedral positions. The F~ and OH” content is correlated with the temperature of formation; tremo-lite with increased concentrations of F serves as a geologic thermometer for the characteristics of high-temperature geologic processes.

Tremolite forms grayish white acicular crystals and radiating columnar aggregates. Compact cryptocrystalline tremolite deposits are called nephrite, and silky fibrous aggregates form mountain leather or mountain cork. The hardness of tremolite on Mohs’ scale is 6–6.5, and its density is about 3,000 kg/m³.

Tremolite is a typical metamorphic mineral, formed in the early stage of contact metamorphosis of dolomites and lime stones. It is also characteristic of a low degree of regional metamorphism; it occurs less frequently in alpine-type veins and pegmatites. Deposits of mountain leather are located in Italy (Lombardy) and on Corsica.

tremolite

[′trem·ə‚līt] (mineralogy) Ca₂Mg₅Si₈O₂₂(OH)₂ Magnesium-rich monoclinic calcium amphibole that forms one end member of a group of solid-solution series with iron, sodium, and aluminum; occurs in long blade-shaped or short stout prismatic crystals and also in masses or compound aggregates.

tremolite

trem·o·lite

tremolite

trem•o•lite

tremolite

tremolite:

Tremolite

tremolite

tremolite

Words related to tremolite

noun a white or pale green mineral (calcium magnesium silicate) of the amphibole group used as a form of asbestos

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