Pretulite Mineral Data

General Information
Chemical Formula:	ScPO4
Composition:	Molecular Weight = 139.93 gm)
	Oxygen45.74 %O
	Phosphorus22.14 %P
	Scandium32.13 %Sc
Environment:	Crystalline – Fine – Occurs as well-formed fine-sized crystals., ,
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
Classification
Dana Class:	38.4.11.5 (38)Anhydrous Phosphates, etc (38.4)A+ XO4 (38.4.11)Zenotime Group (Tetragonal: I41/amd)
Crystallography
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/I_o): 3.293(1) 1.6927(0.45) 2.4636(0.42)
Physical Properties
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
Optical Properties
Dichroism (e):	none.
Dichroism (w):	none.
Optical Data:	Uniaxial (+), w=1.709, e=1.86, bire=0.1510.
Other Information
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
	Google
	MinMax

Pretulite Mineral Data

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