General Information
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| Chemical Formula: |
ScPO4 |
| Composition: |
Molecular Weight = 139.93 gm) |
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| Environment: |
In lazulite-quartz veins in phyllite-micaschist. The scandium dominant analog of xenotime-(Y). |
| IMA Status: |
Approved IMA (Dana # Added) |
| Locality: |
The type locality is 100 m southwest of Hollkegel, which is 12 km south-southwest of Murzzuschlag, Fischbacher Alpen, Styria, Austria. |
| Name Origin: |
For the mountian Pretul, one of the localities at which the mineral occurs. |
| Synonym: |
IMA96.024 |
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Classification
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| Dana Class: |
38.4.11.5 (38)Anhydrous Phosphates, etc (38.4)A+ XO4 (38.4.11)Zenotime Group (Tetragonal: I41/amd) |
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Crystallography
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| Axial Ratios: |
a:c = 1:0.88116 |
| Cell Dimensions: |
a = 6.589, c = 5.806, Z = 4; V = 252.07 Den(Calc)= 3.69 |
| Crystal System: |
Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I41/amd |
| X Ray Diffraction: |
By Intensity(I/Io): 3.293(1) 1.6927(0.45) 2.4636(0.42) |
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Physical Properties
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| Cleavage: |
[100] Perfect |
| Color: |
pale pink. |
| Density: |
3.71 |
| Diaphaniety: |
Transparent |
| Habits: |
Crystalline - Fine - Occurs as well-formed fine sized crystals., , |
| Hardness: |
5 - Apatite |
| Luster: |
Adamantine |
| Streak: |
white |
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Optical Properties
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| Dichroism (e): |
none. |
| Dichroism (w): |
none. |
| Optical Data: |
Uniaxial (+), w=1.709, e=1.86, bire=0.1510. |
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Other Information
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| References: |
NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.83,p625-630,1998) OPTIC PROP.(Am.Min.,Vol.83,p625-630,1998) |
| See Also: |
 Frederic Biret |
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Google |
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MinMax |
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