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Bornite from
Milpillas Mine, Milpillas, Santa Cruz Municipality, Sonora, Mexico


02690370017369857813040.jpg
Bornite, etc.

Milpillas Mine, Milpillas, Santa Cruz Municipality, Sonora, Mexico
02690370017369857813040.jpg
Bornite, etc.

Milpillas Mine, Milpillas, Santa Cruz Municipality, Sonora, Mexico
04797110017369857819054.jpg
Bornite, etc.

Milpillas Mine, Milpillas, Santa Cruz Municipality, Sonora, Mexico
Locality type:Mine
Classification
Species:Bornite
Formula:Cu5FeS4
Comments:For discussion on thin coatings on pyrite crystals, see http://www.mindat.org/mesg-11-380551.html and http://mineral-analysis.es/the-case-of-the-milpillas-chalcocite-covered-pyrite-an-example-of-bad-practice/
https://www.mindat.org/forum.php?read,11,380551,432315#msg-432315 Where Marcus Origlieri explained what happened.
Confirmation
Validity:Unconfirmed/Questioned
Associated Minerals Based on Photo Data:
Pyrite8
Dickite2
Chalcocite1
Data
Mineral Data:Click here to view Bornite data
Locality Data:Click here to view Milpillas Mine, Milpillas, Santa Cruz Municipality, Sonora, Mexico
Data Identifiers
Mindat Occurrence Record ID:931771
Long-form Identifier:1:3:931771:0
GUID (UUID V4):0
Nearest other occurrences of Bornite
32.3km (20.1 miles) ⓘVan Horn Mine, Bear Canyon, Cochise County, Arizona, USA
32.7km (20.3 miles) ⓘHarper Mine, Bear Canyon, Cochise County, Arizona, USA
34.8km (21.6 miles) ⓘLine Boy Mine, Line property, Duquesne-Washington Camp, Patagonia Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
36.2km (22.5 miles) ⓘHamburg Mine (Wisconsin Mine; Hartford Mine), Ramsey Canyon, Cochise County, Arizona, USA
37.3km (23.2 miles) ⓘDuquesne-Washington Camp, Patagonia Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
37.6km (23.4 miles) ⓘBonanza Mine, Westinghouse Mine (Westinghouse property; Davis property), Nash Mines group (Duquesne-Washington group), Duquesne-Washington Camp, Patagonia Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
38.0km (23.6 miles) ⓘHolland Mine, Duquesne Gulch, Nash Mines group (Duquesne-Washington group), Duquesne-Washington Camp, Patagonia Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
43.6km (27.1 miles) ⓘBuena Vista Mine (Goodview Mine), Providencia Canyon, Patagonia Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
43.6km (27.1 miles) ⓘKing Mine (King prospect), Patagonia Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
43.9km (27.3 miles) ⓘProvidencia claim (Provicencia claim), Providencia Canyon, Patagonia Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
References
M. Origlieri ("X-rayed"
cited by dealers) as replacing pyrite, but later found to be chalcocite, see comments above.
Also noted as an ore mineral but reference uncertain.
Jones, Evan, A., Megaw, Peter K.M. (2021) The Milpillas Mine, Cuitaca, Sonora, Mexico. The Mineralogical Record, 52 (5) 493-626
 
and/or  
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