General Information
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 Chemical Formula: |
(Cs,K)Al4Be4(B,Be)12O28 |
| Composition: |
Molecular Weight = 825.74 gm) |
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| Empirical Formula: |
Cs0.75K0.25Al4Be412(B0.75)12(Be0.25)O28 |
| Environment: |
Cs-analogue of rhodizite |
| IMA Status: |
Proposed IMA 1999, Dana # Added |
| Name Origin: |
Commission on New Minerals and Mineral Names (CNMMN) |
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Classification
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| Dana Class: |
25.8.2.2 (25)Anhydrous Borates Containing Hydroxyl or Halogen |
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(25.8)Dana Type |
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(25.8.2)Dana Group |
| Strunz Class: |
V/X.00-00 V - Nitrates, Carbonates and Borates |
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V/X - Unclassified Strunz Nitrates, Carbonates and Borates |
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V/X.00 - Unknown |
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Crystallography
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| Cell Dimensions: |
a = 7.3205, V = 392.30 |
| Crystal System: |
Isometric - Hextetrahedral H-M Symbol (-4 3m) Space Group: P43m- |
| X Ray Diffraction: |
By Intensity(I/Io): 2.99(1) 2.113(0.7) 2.441(0.5) 1.776(0.4) 1.957(0.35) 3.28(0.35) 2.208(0.3) |
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Physical Properties
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| Color: |
colorless, white, or yellow. |
| Diaphaniety: |
Transparent |
| Hardness: |
- |
| Luster: |
Vitreous (Glassy) |
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Optical Properties
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| Optical Data: |
Isotropic, n=1.693. |
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Other Information
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| References: |
NAME( CanMin, Vol 38) PHYS. PROP.(CanMin, Vol) OPTIC PROP.(CanMin, Vol 38) |
| See Also: |
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