General Information
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| Chemical Formula: |
Mn++(Ti,Ta,Sc)2O8 |
| IMA Status: |
Approved IMA 1984 |
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Classification
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| Dana Class: |
8.1.8.3 (8)Multiple Oxides with Nb, Ta, and Ti (8.1)where A BO4 (8.1.8)Dana Group |
| Strunz Class: |
IV/D.17-40 - Oxides [Oxides with metal : oxygen = 1:2 (MO2 and related compounds) (Qitianglinite - Lithiowodginite series).] |
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Crystallography
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| Axial Ratios: |
a:b:c =0.828:1:0.4484 |
| Cell Dimensions: |
a = 9.466, b = 11.431, c = 5.126, Z = 4; beta = 90.31ø V = 554.66 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C2/c |
| X Ray Diffraction: |
By Intensity(I/Io): 2.976(1) 2.966(0.95) 3.644(0.46) |
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Physical Properties
|
| Cleavage: |
None |
| Color: |
dark brown or black. |
| Density: |
6.86 |
| Diaphaniety: |
Transparent to Translucent |
| Hardness: |
5.5 - Knife Blade |
| Streak: |
dark brown |
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Other Information
|
| References: |
PHYS. PROP.(Bull.Miner.,Vol.107-111,1984-1988) |
| See Also: |
 Athena Mineralogy |
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Frederic Biret |
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Google |
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MinMax |
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École des Mines de Paris |
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