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Schultenite from King County, Washington, USA; a second occurrence, and review

Published online by Cambridge University Press:  05 July 2018

R. Falls ,
B. Cannon  and
J. A. Mandarino
R. Falls
Affiliation:
Department of Mineralogy and Geology, Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario, Canada M5S 2C6
B. Cannon
Affiliation:
Bart Cannon Minerals, 1041 NE 100 Street, Seattle, Washington, USA 98125
J. A. Mandarino
Affiliation:
Department of Mineralogy and Geology, Royal Ontario Museum, 100 Queen's Park, Toronto, and Department of Geology, University of Toronto, Toronto, Ontario, Canada M5S 2C6
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Abstract

Schultenite, PbHAsO4, known only from Tsumeb, Namibia, has been identified from a second occurrence: near North Bend, King County, Washington, USA. It occurs as euhedral crystals in a quartz-arsenopyrite-galena vein. It has a measured density of 6.07(3) g/cm3 and a calculated density of 6.079(4) g/cm3. The white to colourless crystals have a white streak, adamantine lustre, and fluoresce dull yellow under long wave ultraviolet light. Schultenite is monoclinic. Pa or P2/a; the unit cell parameters refined from the X-ray powder diffraction data are: a 5.827(3), b 6.743(3), c 4.847(3) Å, β 95.34(5)°; V 189.6(1) Å3; Z = 2; a:b:c = 0.8642:1:0.7188. The forms {010}, {001}, and {3̄22} were observed on the Washington schultenite crystals.

Keywords

schulteniteKing CountyWashington
Type
Research Article
Information
Mineralogical Magazine , Volume 49 , Issue 350 , March 1985 , pp. 65 - 69
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1985 

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