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PbZn(VO4)(OH)
Orthorhombic
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| Figure 25-25. Curved, tapering descloizite crystals from Sterling Hill. Field of view is 0.4 mm in maximum dimension. | ||
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Descloizite, a lead zinc vanadate hydroxide mineral, was described from Sterling Hill by Palache (1935). It occurs in 0.3 mm yellow crystals which have a rough surface (Figure 25-25). Partial analysis of these crystals indicates they are arsenian, with V:As approximately 3:1, in partial solid solution towards arsendescloizite. It is exceedingly rare, occurring with altered augite, and is unknown from Franklin. It is best verfied using both chemical and X-ray methods.
The Franklin occurrence of “descloizite” reported by Palache (1935) is that of pyrobelonite (Dunn, 1983a).
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| Copyright © 1995 by Pete J. Dunn |
Website
by Herb Yeates
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Link
to homepage
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This
page created: January 11, 2001 |
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