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Calcium borate (Ca 3 (BO 3) 2). It can be prepared by reacting calcium metal with boric acid. The resulting precipitate is calcium borate. A hydrated form occurs naturally as the minerals colemanite, nobleite and priceite. [citation needed] One of its uses is as a binder in some grades of hexagonal boron nitride for hot pressing.
A borate is any of a range of boron oxyanions, anions containing boron and oxygen, such as orthoborate BO 3− 3, metaborate BO − 2, or tetraborate B 4 O 2− 7; or any salt of such anions, such as sodium metaborate, Na + [BO 2] − and borax (Na +) 2 [B 4 O 7] 2−. The name also refers to esters of such anions, such as trimethyl borate B ...
Calciborite, CaB 2 O 4, is a rare calcium borate mineral. It was first described in 1955 in the Novofrolovskoye copper–boron deposit, near Krasnoturinsk, Turinsk district, Northern Ural Mountains, Russia. [4] It occurs in a skarn deposit formed in limestone adjacent to a quartz diorite intrusive.
The Borate Minerals are minerals which contain a borate anion group. The borate (BO 3) units may be polymerised similar to the SiO 4 unit of the silicate mineral class. This results in B 2 O 5, B 3 O 6, B 2 O 4 anions as well as more complex structures which include hydroxide or halogen anions. [2] The [B(O,OH) 4] − anion exists as well.
Calcium hexaboride (sometimes calcium boride) is a compound of calcium and boron with the chemical formula CaB 6. It is an important material due to its high electrical conductivity [disputed – discuss], hardness, chemical stability, and melting point. It is a black, lustrous, chemically inert powder with a low density.
Calcium fructoborate is a salt of an organoboron compound containing boron (and fructose and calcium). Its structural formula is Ca[(C 6 H 10 O 6) 2 B] 2. [1] It is naturally found in some plants, and is also manufactured and promoted as a dietary supplement. [2] [3]
Materials exhibiting thermoluminescence in response to ionizing radiation include calcium fluoride, lithium fluoride, calcium sulfate, lithium borate, calcium borate, potassium bromide, and feldspar. It was invented in 1954 by Professor Farrington Daniels of the University of Wisconsin-Madison. [2]
The orthoborate ion is known in the solid state, for example, in calcium orthoborate (Ca 2+) 3 ([BO 3] 3−) 2, [1] where it adopts a nearly trigonal planar structure. It is a structural analogue of the carbonate anion [CO 3] 2−, with which it is isoelectronic. Simple bonding theories point to the trigonal planar structure.