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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Tourmaline from
Fazenda do Cibrão mine, Passagem de Mariana, Mariana, Minas Gerais, Brazil


Locality type:Mine
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:AD3G6(T6O18)(BO3)3X3Z
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Fazenda do Cibrão mine, Passagem de Mariana, Mariana, Minas Gerais, Brazil
Data Identifiers
Mindat Occurrence Record ID:58169
Long-form Identifier:1:3:58169:3
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
8.8km (5.5 miles) ⓘPassagem mine, Passagem de Mariana, Mariana, Minas Gerais, Brazil
12.3km (7.7 miles) ⓘChico Rei mine, Ouro Preto, Minas Gerais, Brazil
27.0km (16.8 miles) ⓘConta História mine, Antônio Pereira, Ouro Preto, Minas Gerais, Brazil
42.3km (26.3 miles) ⓘMorro da Mina mine, Conselheiro Lafaiete, Minas Gerais, Brazil
69.3km (43.1 miles) ⓘMorro Velho mine, Nova Lima, Minas Gerais, Brazil
90.1km (56.0 miles) ⓘConceição mine, Itabira, Minas Gerais, Brazil
97.4km (60.5 miles) ⓘCauê mine, Itabira, Minas Gerais, Brazil
References
 
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