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

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

Tetrahedrite, blende, diamond, boracite and pharmacosiderite are substances which crystallize in this class.

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" by Various

For example, boracite forms pseudo-cubic crystals which become truly cubic at 265�, with a distinct change in density; leucite behaves similarly at about 560�.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" 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

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