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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Actinolite from
Twin Buttes Mine, Twin Buttes, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA


08149150017363713852530.jpg
Actinolite, etc.

Twin Buttes Mine, Twin Buttes, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
08149150017363713852530.jpg
Actinolite, etc.

Twin Buttes Mine, Twin Buttes, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
03452910017272009942286.jpg
Actinolite, etc.

Twin Buttes Mine, Twin Buttes, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
Locality type:Mine
Classification
Species:Actinolite
Formula:◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Comments:Occurs in skarns & tactites.
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Nontronite2
Epidote2
Manganese Oxides2
Data
Mineral Data:Click here to view Actinolite data
Locality Data:Click here to view Twin Buttes Mine, Twin Buttes, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:258200
Long-form Identifier:1:3:258200:9
GUID (UUID V4):0
Nearest other occurrences of Actinolite
1.0km (0.6 miles) ⓘCopper Glance Mine (Glance Mine), Stevens Mountain, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
11.1km (6.9 miles) ⓘMission pit, Mission complex, San Xavier, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
23.0km (14.3 miles) ⓘUnnamed Mn prospect, Papago Mining District (Sierrita Mining District), Sierrita Mountains, Pima County, Arizona, USA
24.7km (15.4 miles) ⓘHelvetia-Rosemont Mining District, Pima County, Arizona, USA
26.3km (16.3 miles) ⓘOmega Mine, Monument Mountain, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
43.1km (26.8 miles) ⓘUnnamed Cu-Fe prospect 118-24, Amole Mining District, Tucson Mountains, Pima County, Arizona, USA
67.1km (41.7 miles) ⓘBelmont Mine (Belmont lease; South Belmont incline; North Belmont shaft; Silver Bill Mine), Duquesne-Washington Camp, Patagonia Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
67.3km (41.8 miles) ⓘDuquesne-Washington Camp, Patagonia Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
70.8km (44.0 miles) ⓘSilver Bell Mine, Mineral Mountain, Silver Bell Mining District, Silver Bell Mountains, Pima County, Arizona, USA
94.5km (58.7 miles) ⓘJordan Canyon prospects, Jordan Canyon, Dragoon, Cochise Mining District, Cochise County, Arizona, USA
References
Anthony, John W.; Williams, Sidney A.; Bideaux, Richard A.; Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.p.101
 
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