Stolzite is a rare mineral; much rarer than wulfenite and usually occurs in very minute crystals. However, the Australian crystals may be up to 1 inch...
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|Is a Variety of||Scheelite|
|Crystallography||Tetragonal; crystals tabular and thick, or dipyramidal. Crystal faces commonly striated.|
|Colors||Brown, yellowish brown. fawn beige, tan, yellow red, red, greenish.|
|Luster||Resinous to subadamantine.|
|Fracture||Conchoidal to uneven; brittle.|
|Specific Gravity||7.9 - 8.34.|
|Stone Sizes||Stolzite is a rare mineral (much rarer than wulfenite and usually occurs in very minute crystals. However, the Australian crystals may be up to 1 inch in size and tiny transparent areas have yielded very small cut stones of a bright orange color.|
|Formula||PbWO4. Dimorphous with Raspite.|
Optics: 0 I 2.27; e : 2.19.
Occurrence: A secondary mineral in the oxidation zone of tungsten-bearing ore deposits.
Broken Hill, New South Wales, Australia.
Brazil; England; Sardinia: Germany; Nigeria.
Utah; Arizona; Massachusetts; Pennsvlvania.
Name: After Dr. Stolz of Bohemia who first called attention to the mineral.