General Information
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 Chemical Formula: |
MnBe(PO4)(OH,F) |
| Composition: |
Molecular Weight = 220.37 gm) |
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| Empirical Formula: |
Mn2+Be(AsO4)(OH)0.75F0.25 |
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Classification
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| Dana Class: |
41.5.4.3 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen |
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(41.5)where (A B)2 (XO4) Zq |
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(41.5.4)Dana Group |
| Strunz Class: |
VII/X.00-00 VII - Phosphates, Arsenates and Vanadates |
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VII/X - Unclassified Strunz Phosphates, Arsenates and Vanadates |
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VII/X.00 - Phosphate, Basic |
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Crystallography
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| Axial Ratios: |
a:b:c =0.3734:1:0.3264 |
| Cell Dimensions: |
a = 5.411, b = 14.49, c = 4.73, Z = 4; beta = 102.75ø V = 361.71 Den(Calc)= 4.05 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P21/a |
| X Ray Diffraction: |
By Intensity(I/Io): 3.45(1) 2.89(0.85) 7.25(0.85) |
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Physical Properties
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| Color: |
pink or rose red. |
| Density: |
3.183 - 3.215, Average = 3.19 |
| Diaphaniety: |
Transparent |
| Hardness: |
5 - Apatite |
| Luster: |
Vitreous (Glassy) |
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Optical Properties
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| Optical Data: |
Biaxial (-), a=1.638, b=1.658, g=1.664, bire=0.0260, 2V(Calc)=56, 2V(Meas)=54.13. |
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Other Information
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
| See Also: |
Links to other data for Vayrynenite :
1 -Athena Mineralogy
2 - EUROmin Project
3 -MinDat.org Location Data
4 -MinMax
5 -WWW-MINCRYST
6 -École des Mines de Paris
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