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.

---

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

---

Etymology

Origin of boracite

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

Example Sentences

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

For example, he observed that crystals of leucite and boracite, which are cubic in external form, are always doubly refracting and optically biaxial, but with a complex internal structure; and that cubic crystals of garnet and analcite sometimes exhibit the same phenomena.

From Project Gutenberg

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

From Project Gutenberg