Rhodizite
A variety of Minerals
What is Rhodizite?
The borate minerals are minerals which contain a borate anion group. The borate (BO3) units may be polymerised similar to the SiO4 unit of the silicate mineral class. This results in B2O5, B3O6, B2O4 anions as well as more complex structures which include hydroxide or halogen anions. The [B(O,OH)4] anion exists as well. Many borate minerals, such as borax, colemanite, and ulexite, are salts: soft, readily soluble, and found in evaporite contexts. However, some, such as boracite, are hard and resistant to weathering, more similar to the silicates. There are over 100 different borate minerals. Borate minerals include: Kernite Na2B4O6(OH)2·3H2O Borax Na2B4O5(OH)4·8H2O Ulexite NaCaB5O6(OH)6·5H2O Colemanite CaB3O4(OH)3·H2O Boracite Mg3B7O13Cl Painite CaZrAl9O15(BO3)
Optical Properties
- Refractive Index
- 1.684-1.694
- Optical Character
- Isotropic
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Rhodizite Localities Map
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Quick Facts
Physical Properties
- Color
- Colourless, white, greyish, yellowish, colourless in transmitted light
- Hardness (Mohs)
- 8
- Density
- 3.24 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- (K,Cs)Al4Be4(B,Be)12O28
- Elements
- Al, B, Be, Cs, K, O

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