Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Biotite from
Piestewa Peak area, Phoenix Mountains, Phoenix, Maricopa County, Arizona, USA


Locality type:Area
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Comments:Occurs in a nearby hill.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Piestewa Peak area, Phoenix Mountains, Phoenix, Maricopa County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:253816
Long-form Identifier:1:3:253816:7
GUID (UUID V4):0
Nearest other occurrences of Biotite
66.6km (41.4 miles) ⓘMidnight Owl Mine, Independence Gulch, White Picacho Mining District, Yavapai County, Arizona, USA
67.1km (41.7 miles) ⓘPicacho View Mine, White Picacho Mining District, Yavapai County, Arizona, USA
68.4km (42.5 miles) ⓘOutpost Mine, San Domingo Wash, White Picacho Mining District, Yavapai County, Arizona, USA
70.2km (43.6 miles) ⓘSacaton Mine, Casa Grande, Pinal County, Arizona, USA
70.6km (43.8 miles) ⓘDragon Mine, Wickenburg, Maricopa County, Arizona, USA
73.8km (45.8 miles) ⓘPurple Passion Mine, Morgan Butte, Big Bug Mining District, Bradshaw Mountains (Bradshaw Range), Yavapai County, Arizona, USA
75.9km (47.2 miles) ⓘSanta Cruz deposit, Casa Grande area, Casa Grande, Casa Grande Mining District, Pinal County, Arizona, USA
78.6km (48.9 miles) ⓘSpringfield Mine (Springfield group; Springfield shaft; Venus claim; Gorilla claim), Crown King, Pine Grove Mining District, Bradshaw Mountains (Bradshaw Range), Yavapai County, Arizona, USA
79.6km (49.5 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
82.2km (51.1 miles) ⓘRainbow Mine (Rainbow deposit; Rainbow lode; Rainbow prospect; Rainbow group), Turkey Creek Station, Black Canyon Mining District, Wickenburg Mountains, Yavapai County, Arizona, USA
References
Thorpe, D.G. & D.M. Burt (1980), A unique chloritoid-staurolite schist from near Squaw Peak, AZ, AZ Geol. Soc. Digest: 12: 193-200.
Anthony, John W.; Williams, Sidney A.; Bideaux, Richard A.; Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.pages 171, 380
 
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