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

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

In boracite there are four uniterminal triad axes, and the faces of the two tetrahedra perpendicular to them will bear opposite charges.

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

It occurs in nature also in boracite, datolite, tourmaline, and some other minerals.

From Webster's Unabridged Dictionary (2nd 100 Pages) by Webster, Noah