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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Chalcocite from
Otmar quarry, Stav, Úbislavice, Jičín District, Hradec Králové Region, Czech Republic


Locality type:Quarry
Classification
Species:Chalcocite
Formula:Cu2S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcocite data
Locality Data:Click here to view Otmar quarry, Stav, Úbislavice, Jičín District, Hradec Králové Region, Czech Republic
Data Identifiers
Mindat Occurrence Record ID:485185
Long-form Identifier:1:3:485185:1
GUID (UUID V4):0
Nearest other occurrences of Chalcocite
33.9km (21.1 miles) ⓘFluorite deposit, Harrachov, Semily District, Liberec Region, Czech Republic
39.9km (24.8 miles) ⓘGranicznik Mt., Szklarska Poręba, Karkonosze County, Lower Silesian Voivodeship, Poland
40.3km (25.1 miles) ⓘSzklarska Poręba Huta granite quarry, Szklarska Poręba, Karkonosze County, Lower Silesian Voivodeship, Poland
40.7km (25.3 miles) ⓘWiciarka 1 quarry, Szklarska Poręba, Karkonosze County, Lower Silesian Voivodeship, Poland
42.6km (26.5 miles) ⓘKateřina Coal Mine, Radvanice, Trutnov District, Hradec Králové Region, Czech Republic
43.1km (26.8 miles) ⓘFriedrich Wilhelm magnetite–pyrite mine, Zbójeckie Skały, Szklarska Poręba, Karkonosze County, Lower Silesian Voivodeship, Poland
43.3km (26.9 miles) ⓘStanisław Quarry, Kopaniec, Gmina Stara Kamienica, Karkonosze County, Lower Silesian Voivodeship, Poland
44.0km (27.4 miles) ⓘOgorzelec quarry, Ogorzelec, Gmina Kamienna Góra, Kamienna Góra County, Lower Silesian Voivodeship, Poland
50.2km (31.2 miles) ⓘDolomitic marble quarry, Rędziny, Gmina Kamienna Góra, Kamienna Góra County, Lower Silesian Voivodeship, Poland
53.3km (33.1 miles) ⓘHoffnung Mine, Colourful Lakelets, Wieściszowice, Gmina Marciszów, Kamienna Góra County, Lower Silesian Voivodeship, Poland
References
Bradna, J., Doubek, Z.: Přírodní měď z Otmarova lomu u Nové Paky. Acta musei Reginaehradecensis, série A: vědy přírodní, 1962, roč. IV, č. 1-2, s. 165.
 
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