Vote for your favorite mineral in #MinCup26! - Pyromorphite vs. Graphite
Linked by archaic translations and mineralogical misunderstandings, the quarterfinals are ending in hexagons with vivid pyromorphite vs writeable graphite.
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Gerhardtite from
United Verde Mine, Jerome, Verde Mining District, Black Hills (Black Hill Range), Yavapai County, Arizona, USA


Locality type:Mine
Classification
Species:Gerhardtite
Formula:Cu2(NO3)(OH)3
Comments:Crystals to ¼ inch on fractures in massive cuprite.
Confirmation
Validity:Valid - Type Locality
Data
Mineral Data:Click here to view Gerhardtite data
Locality Data:Click here to view United Verde Mine, Jerome, Verde Mining District, Black Hills (Black Hill Range), Yavapai County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:5568
Long-form Identifier:1:3:5568:0
GUID (UUID V4):0
References
Dana 6: 1094
Wells, H.L. & S.L. Penfield (1885), Gerhardtite and artificial cupric nitrates, American Journal of Science: 30: 50-57
Palache, Charles; Berman, Harry; Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.
Galbraith, Dr. Frederic W.; Brennan, Dr. Daniel J. (1959) Minerals of Arizona (3rd ed.). University of Arizona Press. 116pp.
Anthony, John W.; Williams, Sidney A.; Bideaux, Richard A.; Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.pp.230-231
 
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