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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Hornblende Root Name Group from
Mansfield Mine group (Mansfield No. 1 and 2), Mansfield Gulch (Mansfield Canyon), Temporal Gulch, Wrightson Mining District, Santa Cruz County, Arizona, USA


Classification
Species:'Hornblende Root Name Group' (not an IMA approved species)
Formula:◻Ca2(C42+C3+)(AlSi7O22)W2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hornblende Root Name Group data
Locality Data:Click here to view Mansfield Mine group (Mansfield No. 1 and 2), Mansfield Gulch (Mansfield Canyon), Temporal Gulch, Wrightson Mining District, Santa Cruz County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:529686
Long-form Identifier:1:3:529686:6
GUID (UUID V4):0
Nearest other occurrences of Hornblende Root Name Group
12.8km (8.0 miles) ⓘTreasure Vault Mine, Agua Caliente Canyon, Tyndall Mining District, Santa Cruz County, Arizona, USA
13.4km (8.4 miles) ⓘIron Cap Mine, Harshaw Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
14.2km (8.8 miles) ⓘCalifornia Mine, Harshaw Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
14.9km (9.3 miles) ⓘFlux Mine, Flux Gulch, Alum Gulch, Harshaw Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
17.4km (10.8 miles) ⓘIron Mask Mine (Iron Mask prospect; McCleary prospect; Littleshot prospect), Jackson Mine group (McCleary group; Old Baldy Copper Mine; Rosa Mine; Hickory; Decatur), Jackson Canyon, Old Baldy Mining District, Pima County, Arizona, USA
27.9km (17.3 miles) ⓘHelvetia-Rosemont Mining District, Pima County, Arizona, USA
29.4km (18.3 miles) ⓘDuquesne-Washington Camp, Patagonia Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
31.7km (19.7 miles) ⓘPrince Mine group, Hilton Mines, Copper Camp, Hilton (Lead Mountain), Empire Mining District, Empire Mountains, Pima County, Arizona, USA
84.3km (52.4 miles) ⓘBurrito de Fierro Mine, Cochise Mining District, Cochise County, Arizona, USA
85.9km (53.4 miles) ⓘCenturion Mine, Centurion, Cochise Mining District, Cochise County, Arizona, USA
References
 
and/or  
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