boracite

American  

[bawr-uh-sahyt, bohr-] / ˈbɔr əˌsaɪt, ˈboʊr- /

noun

1. a strongly pyroelectric mineral, a borate and chloride of magnesium, Mg 6 Cl 2 B 14 O 26 , occurring in white or colorless cubic crystals or fine-grained masses.

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boracite British  

/ ˈbɔːrəˌsaɪt /

noun

1. a white mineral that forms salt deposits of magnesium borate and chloride in orthorhombic crystalline form. Formula: Mg 3 ClB 7 O 13

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Etymology

Origin of boracite

1800–10; borac- (stem of borax ¹ ) + -ite ¹

Example Sentences

Various explanations have been offered to account for these “optical anomalies” of boracite.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 2 "Bohemia" to "Borgia, Francis" by Various

When such water evaporates, it becomes concentrated, along with the magnesium and potassium salts, in the "mother liquor"; and upon complete evaporation, it crystallizes out as boracite and other rarer minerals.

From The Economic Aspect of Geology by Leith, C. K. (Charles Kenneth)

The sanjak is rich in mineral wealth; silver mines are worked at Balia and boracite mines at Susurlu.

From Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" by Various

It exports cereals, silk, cotton, opium, tobacco, olive-oil, meerschaum, boracite, &c.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" by Various

It may also be obtained by the decomposition of boracite with hot hydrochloric acid.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John" by Various