tremolite

American  

[trem-uh-lahyt] / ˈtrɛm əˌlaɪt /

noun

Mineralogy.

1. a white or grayish variety of amphibole, Ca 2 Mg 5 Si 8 O 22 (OH) 2 , usually occurring in bladed crystals.

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tremolite British  

/ ˈtrɛməˌlaɪt /

noun

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

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Other Word Forms

• tremolitic adjective

Etymology

Origin of tremolite

1790–1800; named after Tremola , valley in Switzerland; -ite ¹

Example Sentences

Lefevres says, following scientific analysis of cosmetic talc products, the memo recommended minimising the use of tremolite until substantial evidence showed it had no adverse effects.

From BBC • Mar. 18, 2026

Like other claims, Lefevres cites a memo from the 1960s about the use of tremolite in the use of talc products.

From BBC • Mar. 18, 2026

One internal document from 1973 allegedly says: "Our baby powder contains talc fragments classifiable as fiber. Occasionally sub-trace quantities of tremolite or actinolite are identifiable…"

From BBC • Oct. 15, 2025

But in an April 9, 1969, memo to a company doctor, Ashton said it was “normal” to find tremolite in many U.S. talc deposits.

From Reuters • Dec. 14, 2018

The asbestos formerly used in the arts was generally a fibrous form of some kind of amphibole, like tremolite, or anthophyllite, though occasionally perhaps a pyroxene.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" by Various