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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Uraninite from
Medvědín uranium deposit, Medvědín, Špindlerův Mlýn, Trutnov District, Hradec Králové Region, Czech Republic


Locality type:Deposit
Classification
Species:Uraninite
Formula:UO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Uraninite data
Locality Data:Click here to view Medvědín uranium deposit, Medvědín, Špindlerův Mlýn, Trutnov District, Hradec Králové Region, Czech Republic
Data Identifiers
Mindat Occurrence Record ID:475487
Long-form Identifier:1:3:475487:9
GUID (UUID V4):0
Nearest other occurrences of Uraninite
7.0km (4.3 miles) ⓘRýžoviště, Harrachov, Semily District, Liberec Region, Czech Republic
10.7km (6.7 miles) ⓘMichałowice granite quarry, Piechowice, Karkonosze County, Lower Silesian Voivodeship, Poland
11.3km (7.0 miles) ⓘSzklarska Poręba Huta granite quarry, Szklarska Poręba, Karkonosze County, Lower Silesian Voivodeship, Poland
11.6km (7.2 miles) ⓘSkalna Brama pegmatite, Szklarska Poręba, Karkonosze County, Lower Silesian Voivodeship, Poland
13.3km (8.2 miles) ⓘVrchlabí formation, Trutnov District, Hradec Králové Region, Czech Republic
13.5km (8.4 miles) ⓘKrucze Skały, Karpacz, Karkonosze County, Lower Silesian Voivodeship, Poland
13.5km (8.4 miles) ⓘKarkonosze IG-1 borehole, Jakuszyce, Szklarska Poręba, Karkonosze County, Lower Silesian Voivodeship, Poland
15.8km (9.8 miles) ⓘBudniki uranium adit No 21, Budniki, Kowary, Karkonosze County, Lower Silesian Voivodeship, Poland
15.9km (9.9 miles) ⓘBudniki, Kowary, Karkonosze County, Lower Silesian Voivodeship, Poland
16.7km (10.4 miles) ⓘWołowa Góra, Kowary, Karkonosze County, Lower Silesian Voivodeship, Poland
References
Journal of Geosciences 54:15-56
Plášil, J., Sejkora, J., Škoda, R., Goliáš, V. (2006) Supergene Y, REE minerals from the Medvědín deposit, the Krkonoše (Giant) Mts., Czech Republic. Mineralogia Polonica: 28: 181-183.
Plášil, J., Sejkora, J., Čejka, J., Škoda, R., Goliáš, V. (2009) Supergene mineralization of the Medvědín uranium deposit, Krkonoše Mountains, Czech Republic. Journal of GEOsciences, 54 (1) 15-56
 
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