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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Magnetite from
Cuiabá mine, Sabará, Minas Gerais, Brazil


Locality type:Mine
Classification
Species:Magnetite
Formula:Fe2+Fe23+O4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Magnetite data
Locality Data:Click here to view Cuiabá mine, Sabará, Minas Gerais, Brazil
Data Identifiers
Mindat Occurrence Record ID:643303
Long-form Identifier:1:3:643303:1
GUID (UUID V4):0
Nearest other occurrences of Magnetite
13.8km (8.6 miles) ⓘMorro Velho mine, Nova Lima, Minas Gerais, Brazil
14.0km (8.7 miles) ⓘRaposos mine, Raposos, Minas Gerais, Brazil
18.4km (11.4 miles) ⓘGongo Soco mine, Barão de Cocais, Minas Gerais, Brazil
19.2km (11.9 miles) ⓘÁguas Claras mine, Nova Lima, 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
42.6km (26.5 miles) ⓘPitangui mine, Catas Altas, Minas Gerais, Brazil
47.5km (29.5 miles) ⓘConta História mine, Antônio Pereira, Ouro Preto, Minas Gerais, Brazil
48.7km (30.2 miles) ⓘCata Preta mine, Santa Rita Durão, Mariana, Minas Gerais, Brazil
49.0km (30.4 miles) ⓘSamarco mine (Morro do Fraga mine), Bento Rodrigues, Santa Rita Durão, Mariana, Minas Gerais, Brazil
References
Lobato, Lydia Maria, Ribeiro-Rodrigues, Luiz Cláudio, Vieira, Frederico Wallace Reis (2001) Brazil's premier gold province. Part II: geology and genesis of gold deposits in the Archean Rio das Velhas greenstone belt, Quadrilátero Ferrífero. Mineralium Deposita, 36 (3) 249-277 doi:10.1007/s001260100180
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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