Borax (mineral)
| Borax | ||
|---|---|---|
Specific gravity 1.715 | | |
| Optical properties | Biaxial (-) | |
| Refractive index | nα = 1.4466 nβ = 1.4687 nγ = 1.4717 | |
| Fusibility | 1.5 | |
| Diagnostic features | Froths on heating, producing a yellow flame | |
| Solubility | Soluble in water | |
| References | [2][3][4][5] | |
Borax (Na2B4O5(OH)4 · 8 H2O[2]) is a borate mineral found in evaporite deposits of alkaline lacustrine environments and as a surface efflorescence in arid regions. It is the chief mineral mined from the deposits at Boron, California and nearby locations, and is the chief source of commercial borax.[5]
Borax first reached Western civilization as tincal mined from deposits in Tibet.[5] The term borax comes from the Arabic bauraq, meaning white.[3]
Occurrences
The most extensive deposits are in Kirka,
Uses
Natural occurrences of the mineral are an important source of commercial borax, which is used for the manufacture of glass fibers, in cleaning agents, as an antiseptic, and as a flux in metallurgy and solvent for metal oxides.[5]
See also
References
- S2CID 235729616.
- ^ a b Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C. (2005). "Borax" (PDF). Handbook of Mineralogy. Retrieved 17 June 2022.
- ^ a b Borax, Mindat.org, retrieved 17 June 2022
- ISBN 0442276249.
- ^ ISBN 047157452X.
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