General Information
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| Chemical Formula: |
ScPO4·2(H2O) |
| Composition: |
Molecular Weight = 175.96 gm) |
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Classification
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| Dana Class: |
40.4.3.3 (40)Hydrated Phosphates, etc (40.4)where A+++ XO4 · x(H2O) (40.4.3)Dana Group |
| Strunz Class: |
VII/C.09-30 - Phosphates, Arsenates and Vanadates [Water-bearing phosphates without unfamiliar anions. cations of medium and small size: Be and Mn, Fe, Cu, Zn, Mg (Variscite group).] |
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Crystallography
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| Axial Ratios: |
a:b:c =0.8727:1:0.5322 |
| Cell Dimensions: |
a = 8.92, b = 10.22, c = 5.44, Z = 4; V = 495.92 Den(Calc)= 2.36 |
| Crystal System: |
Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: P212121 |
| X Ray Diffraction: |
By Intensity(I/Io): 4.88(1) 2.9(0.8) 4.51(0.8) |
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Physical Properties
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| Cleavage: |
[110] Good, [100] Indistinct, [001] Indistinct |
| Color: |
blue gray, colorless, greenish white, yellowish, or light blue. |
| Density: |
2.44 |
| Diaphaniety: |
Transparent |
| Hardness: |
5 - Apatite |
| Luster: |
Vitreous - Pearly |
| Streak: |
white |
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Optical Properties
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| Optical Data: |
Biaxial (-), a=1.572, b=1.59, g=1.601, bire=0.0290, 2V(Calc)=74, 2V(Meas)=60. |
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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: |
 Athena Mineralogy |
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Frederic Biret |
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Google |
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MinMax |
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Minerals of Wisconsin |
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École des Mines de Paris |
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Pronunciation Guide