Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Allophane from
Sacramento Hill, Bisbee, Cochise County, Arizona, USA


06054670017374059374711.jpg
Allophane

Sacramento Hill, Bisbee, Cochise County, Arizona, USA
06054670017374059374711.jpg
Allophane

Sacramento Hill, Bisbee, Cochise County, Arizona, USA
05455130017374059385429.jpg
Allophane

Sacramento Hill, Bisbee, Cochise County, Arizona, USA
Locality type:Hill
Classification
Species:Allophane
Formula:(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Comments:Occurs in hydrothermally altered granite porphyry stock.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Allophane data
Locality Data:Click here to view Sacramento Hill, Bisbee, Cochise County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:249488
Long-form Identifier:1:3:249488:3
GUID (UUID V4):0
Nearest other occurrences of Allophane
0.9km (0.5 miles) ⓘCopper Queen Mine, Queen Hill, Bisbee, Cochise County, Arizona, USA
0.9km (0.6 miles) ⓘSouthwest Mine, Hendricks Gulch, Bisbee, Cochise County, Arizona, USA
28.3km (17.6 miles) ⓘGold Camp Mines area, Turquoise Mining District (Courtland-Gleeson Mining District), Cochise County, Arizona, USA
34.4km (21.4 miles) ⓘTombstone Mining District, Cochise County, Arizona, USA
38.0km (23.6 miles) ⓘUnnamed prospect No. 1, Courtland, Turquoise Mining District (Courtland-Gleeson Mining District), Cochise County, Arizona, USA
38.1km (23.7 miles) ⓘUnnamed prospect No. 2, Courtland, Turquoise Mining District (Courtland-Gleeson Mining District), Cochise County, Arizona, USA
38.5km (23.9 miles) ⓘMary Mine, Great Western Group, Courtland, Turquoise Mining District (Courtland-Gleeson Mining District), Cochise County, Arizona, USA
38.6km (24.0 miles) ⓘLast Chance Mine, Casey Hill, Courtland, Turquoise Mining District (Courtland-Gleeson Mining District), Cochise County, Arizona, USA
38.7km (24.0 miles) ⓘMaid of Sunshine Mine, Courtland, Turquoise Mining District (Courtland-Gleeson Mining District), Cochise County, Arizona, USA
42.4km (26.4 miles) ⓘAntelope group, Mexican Hat Mountain, Courtland, Turquoise Mining District (Courtland-Gleeson Mining District), Cochise County, Arizona, USA
References
Schwartz, George Melvin (1947) Hydrothermal alteration in the "porphyry copper" deposits. Economic Geology, 42 (4) 319-352 doi:10.2113/gsecongeo.42.4.319
Anthony, John W.; Williams, Sidney A.; Bideaux, Richard A.; Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.pages 105, 257, 265
 
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