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Mineralpedia Details for Stolzite

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Stolzite

Stolzite

Named for the man who provided the first specimen for study, Dr. Joseph Alexis Stolz from the Czech Republic.  Relatively uncommon, Stolzite forms in the oxidized areas of hydrothermal tungsten-rich lead deposits. It can be found in many locations but only in very small amounts. Stolzite can fluoresce a bright red to orange under long-wave ultraviolet light and a bright lemony yellow under short-wave ultraviolet light. Often used as a scintillator due to its luminescence when irradiated.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/stolzite.pdf

Formula
PbWO4 
Crystal System
Tetragonal 
Crystal Habit
Crystalline - Coarse, Granular, Tabular 
Cleavage
Indistinct, Imperfect, None 
Luster
Adamantine - Resinous 
Color
reddish brown, yellowish brown, brown, greenish brown, gray 
Streak
white 
Class
Tetragonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
2.5-3 
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Stolzite from Kagara Zinc mine, Balcooma o/c, Lynnd Junction, North Queensland, Australia

Stolzite
            from Kagara Zinc mine, Balcooma o/c, Lynnd Junction, North Queensland, Australia Light yellow prismatic, glassy, crystals to 3mm.
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Stolzite from Broken Hill, New South Wales, Australia

Stolzite
            from Broken Hill, New South Wales, Australia Translucent, glassy, orange tabular crystals on limonitic matrix. There are dozens of crystals, the largest (upper right) is 2mm. Excellent rich specimen.
Click thumbnail images for larger view.

Stolzite from Silver Coin mine, Humboldt Co., Nevada, United States

Stolzite
            from Silver Coin mine, Humboldt Co., Nevada, United States

Tabular, almost clear Stolzite crystal to 2mm.

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Stolzite from Zinnwald, Erzgebirge, Bohemia, Czech Republic

Stolzite
            from Zinnwald, Erzgebirge, Bohemia, Czech Republic
Special Info
Type Locality

Orange micro 1mm dipyramidal crystals with abundant coverage. Hyrsl tag. Type Locality!

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Stolzite from Cordillera mine, Tuena, Georgiana Co., New South Wales, Australia

Stolzite
            from Cordillera mine, Tuena, Georgiana Co., New South Wales, Australia

Honey yellow tetragonal dipyramidal crystals about 0.75mm.

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Stolzite from Cordillera mine, Tuena, Georgiana Co., New South Wales, Australia

Stolzite
            from Cordillera mine, Tuena, Georgiana Co., New South Wales, Australia

Slender yellowish dipyramidal crystals to around 1mm. The Stolzite is scattered all over the spongy matrix with other stuff.

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Stolzite from Mundo Nuevo, La Libertad dept., Peru

Stolzite
            from Mundo Nuevo, La Libertad dept., Peru

Yellow coating of Stolzite on large Scheelite crystals to 1.3cm with Quartz.

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