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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Freibergite Subgroup from
Elatsite Mine, Etropole Municipality, Sofia Province, Bulgaria


Locality type:Mine
Classification
Species:'Freibergite Subgroup' (not an IMA approved species)
Formula:(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Freibergite Subgroup data
Locality Data:Click here to view Elatsite Mine, Etropole Municipality, Sofia Province, Bulgaria
Data Identifiers
Mindat Occurrence Record ID:736714
Long-form Identifier:1:3:736714:4
GUID (UUID V4):0
Nearest other occurrences of Freibergite Subgroup
2.4km (1.5 miles) ⓘNegarshtitsa West deposit, Etropole Municipality, Sofia Province, Bulgaria
6.0km (3.7 miles) ⓘDolna Kamenitsa vein, Etropole Municipality, Sofia Province, Bulgaria
65.1km (40.4 miles) ⓘSedmochislenitsi Mine (Sedmocislenici Mine), Europe
References
Bogdanov, K., Filipov, A., Kehayov, R. (2005) Au-Ag-Te-Se minerals in the Elatsite porphyry-copper deposit, Bulgaria. Geochemistry, Mineralogy and Petrology: 43: 13-19.
Georgiev, Georgi (2008) A genetic model of the Elatsite porphyry copper deposit, Bulgaria. Geochemistry, Mineralogy And Petrology: 46: 143-160.
Mladenova, V., Apostolova, R., & Ivanov, Z. (2017). Epithermal intermediate-sulfidation veins in the low-grade metamorphic rocks in the upper levels of the Elatsite porphyry copper deposit, Bulgaria. Review of the Bulgarian Geological Society, 78.
Stefanova, Elitsa, Georgiev, Stoyan, Peytcheva, Irena, Marchev, Peter, Quadt, Albrecht Von, Raicheva, Raya, Gerdjikov, Ianko, Kouzmanov, Kalin, Boyce, Adrian, Vennemann, Torsten (2023) Sulfide Trace Element Signatures and S- and Pb-Isotope Geochemistry of Porphyry Copper and Epithermal Gold-Base Metal Mineralization in the Eletsite–Chelopech Ore Field (Bulgaria) Minerals, 13 (5) 630 doi:10.3390/min13050630
 
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