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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Pyrrhotite from
Cuiabá mine, Sabará, Minas Gerais, Brazil


Locality type:Mine
Classification
Species:Pyrrhotite
Formula:Fe1-xS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrrhotite data
Locality Data:Click here to view Cuiabá mine, Sabará, Minas Gerais, Brazil
Data Identifiers
Mindat Occurrence Record ID:643155
Long-form Identifier:1:3:643155:6
GUID (UUID V4):0
Nearest other occurrences of Pyrrhotite
5.8km (3.6 miles) ⓘLamego Au deposit, Sabará, Minas Gerais, Brazil
11.2km (6.9 miles) ⓘJuca Vieira mine, Caeté, Minas Gerais, Brazil
13.8km (8.6 miles) ⓘMorro Velho mine, Nova Lima, Minas Gerais, Brazil
14.0km (8.7 miles) ⓘRaposos mine, Raposos, Minas Gerais, Brazil
29.5km (18.4 miles) ⓘCórrego do Sitio Au deposit, Santa Bárbara, Minas Gerais, Brazil
30.0km (18.6 miles) ⓘSão Bento mine, Santa Bárbara, Minas Gerais, Brazil
33.4km (20.8 miles) ⓘPilar mine, Santa Bárbara, Minas Gerais, Brazil
68.7km (42.7 miles) ⓘPassagem mine, Passagem de Mariana, Mariana, Minas Gerais, Brazil
85.4km (53.1 miles) ⓘMorro da Mina mine, Conselheiro Lafaiete, Minas Gerais, Brazil
92.2km (57.3 miles) ⓘSão Sebastião deposit, São José da Varginha, Minas Gerais, Brazil
References
Thorman, Charles H., DeWitt, Ed, Maron, Marcos A., Ladeira, Eduardo A. (2001) Major Brazilian gold deposits – 1982 to 1999. Mineralium Deposita, 36 (3) 218-227 doi:10.1007/s001260100170
Ferraz da Costa, Marília; Kyle, J. Richard; Lobato, Lydia M.; Ketcham, Richard A.; Figueiredo e Silva, Rosaline C.; Fernandes, Raphael C. (2022) Orogenic gold ores in three-dimensions: A case study of distinct mineralization styles at the world-class Cuiabá deposit, Brazil, using high-resolution X-ray computed tomography on gold particles. Ore Geology Reviews, 140. doi:10.1016/j.oregeorev.2021.104584
Peterle, Daniel T.; Lobato, Lydia M.; Ulrich, Stanislav; Pinto, Suellen O.C.; Ferraz, Edson R.M.; Tessalina, Svetlana; Ribeiro, Bruno V.; Santos, Thales J.C. (2026) Rediscovery of the high-grade Viana orebody: a missing link in the Archean Cuiabá microbasin framework and the timing of a world-class BIF-hosted gold system. Ore Geology Reviews, 195. p.107413. doi:10.1016/j.oregeorev.2026.107413
 
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