Vote for your favorite mineral in #MinCup26! - Cuprite vs. Halite
While externally similar shapes, these two minerals are very different inside.
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Halloysite from
Castle Dome Mine (Castle Dome deposit; Pinto Valley deposit), Castle Dome area (Castle Dome Mine area; Pinto Valley Mine area), Inspiration, Miami-Inspiration Mining District, Gila County, Arizona, USA


Locality type:Mine
Classification
Species:Halloysite
Formula:Al2Si2O5(OH)4 · n(H2O)
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Baryte
Data
Mineral Data:Click here to view Halloysite data
Locality Data:Click here to view Castle Dome Mine (Castle Dome deposit; Pinto Valley deposit), Castle Dome area (Castle Dome Mine area; Pinto Valley Mine area), Inspiration, Miami-Inspiration Mining District, Gila County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:217679
Long-form Identifier:1:3:217679:6
GUID (UUID V4):0
Nearest other occurrences of Halloysite
6.4km (4.0 miles) ⓘMiami Mine, Miami-Inspiration deposit, Miami, Miami-Inspiration Mining District, Globe-Miami Mining District, Gila County, Arizona, USA
15.3km (9.5 miles) ⓘOld Dominion Mine, Buffalo Hill, Old Dominion vein system, Globe, Globe Hills Mining District, Gila County, Arizona, USA
16.1km (10.0 miles) ⓘResolution deposit, Superior, Pinal County, Arizona, USA
17.8km (11.1 miles) ⓘMagma Mine, Superior, Pinal County, Arizona, USA
28.9km (17.9 miles) ⓘRay Mine, Scott Mountain, Pinal County, Arizona, USA
57.2km (35.5 miles) ⓘPoston Butte deposit (Continental Oil Co. property; Aztec Exploration and Development Co. property; Florence Conoco; Florence Copper Co. property), Florence, Florence Mining District (Blackwater Mining District; Black Rock Mining District), Pinal 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
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.p.266
 
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