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Tooeleite, a new mineral from the U.S. Mine, Tooele County, Utah

Published online by Cambridge University Press:  05 July 2018

Fabien P. Cesbron  and
Sidney A. Williams
Fabien P. Cesbron
Affiliation:
Globo De Plomo Enterprises, P.O. Box 872, Douglas AZ 85608, U.S.A.
Sidney A. Williams
Affiliation:
Globo De Plomo Enterprises, P.O. Box 872, Douglas AZ 85608, U.S.A.
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Abstract

The new mineral tooeleite occurs with pyrite, arsenopyrite, scorodite, and jarosite at the U.S. Mine, Tooele Country, Utah. Analysis by electron microprobe gave Fe2O3 43.56%, As2O5 38.61%, SO3 7.24%, and H2O by the Penfield method 9.80%. For this analysis, the suggested formula is Fe8-2x3+[(AS1-xSx)O4]6(OH)6.5H20; x is about 0.2.

Crystals are orthorhombic, perhaps Pbcm or Pbc21, with a = 6.416, b 19.45, c = 8.941 Å. The strongest diffraction lines are [d in Å, (hkl), (I)] 9.75 (020) (10); 3.208 (200,132) (9); 3.047 (061,220) (5); 4.476 ({002) (4) and 2.680 (240,113) (4). The mineral is optically negative with a small 2V; α = 1.94, β = 2.05, γ = 2.06. Hardness = 3, Dmeas = 4.23, Dcalc = 4.15 g/cm3 for Z = 2.

Keywords

tooeleitenew mineralTooele CountyUtah
Type
Research Article
Information
Mineralogical Magazine , Volume 56 , Issue 382 , March 1992 , pp. 71 - 73
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2014

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References

Nolan, T. B. (1935) The Gold Hill Mining District Utah. U.S.G.S. Prof. Paper, 177.CrossRefGoogle Scholar