Zinclipscombite

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Zinclipscombite
Zinclipscombite-104316.jpg
Zinclipscombite: Pale green balls and crystal clusters. Silver Coin Mine, Valmy, Iron Point District, Humboldt Co., Nevada, US
General
Category Phosphate mineral
Formula Zn(Fe3+)2(PO4)2(OH)2
IMA symbol Zlcb [1]
Strunz classification 8.BB.90
Dana classification 41.10.02.02
Crystal system Tetragonal
Crystal class Trapezohedral (422)
H-M symbol: (4 2 2)
Space group P43212
Unit cell a = 7.242, c = 13.125 [Å]; Z = 4
Identification
Formula mass 386.04 g/mol
ColorDark green to brown
Cleavage None
Fracture Brittle
Mohs scale hardness5
Luster Vitreous
Streak Light green to tan
Diaphaneity Translucent
Specific gravity 3.65
Optical propertiesUniaxial
Refractive index nω = 1.755, nε = 1.795
Birefringence 0.0400
References [2] [3]

Zinclipscombite is a dark-green to brown zinc iron phosphate mineral with the formula Zn(Fe3+)2(PO4)2(OH)2. [2] [3] It occurs as fibrous spheres and exhibits tetragonal crystal structure. [2]

Contents

In the classification of non-silicate minerals zinclipscombite is in the lipscombite group, which also includes lipscombite.

Discovery

The mineral zinclipscombite was discovered and named by Chukanov, Pekov, Möckel, Zadov, and Dubinchuk [4] [5] from a sample from the Silver Coin mine, Edna Mountain, Valmy, Humboldt County, Nevada, United States. The new mineral name was approved in 2006 by the Commission on New Minerals and Mineral Names, International Mineralogical Association.

References

  1. ↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi: 10.1180/mgm.2021.43 . S2CID   235729616.
  2. 1 2 3 Mindat
  3. 1 2 WebMineral
  4. ↑ Chukanov, N. V., Pekov, I. V., Möckel, S., Zadov, A. E., and Dubinchuk V. T. Zinclipscombite, Zn(Fe3+)2(PO4)2(OH)2, a new mineral species Geology of Ore Deposits, 49, 7, 509–513, doi : 10.1134/S1075701507070033
  5. ↑ Chukanov, N. V., Pekov, I. V., Möckel, S., Zadov, A. E., and Dubinchuk V. T. (2006): Zinclipscombite Zn(Fe3+)2(PO4)2(OH)2 – a new mineral. Proceedings of the Russian Mineralogical Society, 135(6), 13–18.

Gallery of zinclipscombite pictures at mindat.org.


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