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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Opal from
Vrchoslav fluorite deposit, Vrchoslav, Krupka, Teplice District, Ústí nad Labem Region, Czech Republic


Locality type:Deposit
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
Associated Minerals Based on Photo Data:
Jarosite2
Gypsum1
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Vrchoslav fluorite deposit, Vrchoslav, Krupka, Teplice District, Ústí nad Labem Region, Czech Republic
Data Identifiers
Mindat Occurrence Record ID:808170
Long-form Identifier:1:3:808170:4
GUID (UUID V4):0
Nearest other occurrences of Opal
9.4km (5.9 miles) ⓘTin mine, Altenberg, Sächsische Schweiz-Osterzgebirge, Saxony, Germany
11.8km (7.3 miles) ⓘŠpičák u Krásného Lesa, Petrovice, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic
15.9km (9.9 miles) ⓘBílina coal mine, Bílina, Teplice District, Ústí nad Labem Region, Czech Republic
15.9km (9.9 miles) ⓘMariánská Skála (Mariánská hora; Marienberg), Ústí nad Labem, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic
15.9km (9.9 miles) ⓘRadešín hill, Radešín, Chuderov, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic
16.5km (10.3 miles) ⓘHradisko Outcrops, Bílina, Teplice District, Ústí nad Labem Region, Czech Republic
17.0km (10.6 miles) ⓘStarý hill, Radejčín, Řehlovice, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic
17.8km (11.0 miles) ⓘLiščí vrch, Dolni Zálezly, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic
20.6km (12.8 miles) ⓘBentonite deposit Braňany II - Černý vrch, Braňany, Most District, Ústí nad Labem Region, Czech Republic
22.2km (13.8 miles) ⓘFluorite deposit, Jílové, Děčín District, Ústí nad Labem Region, Czech Republic
References
Analysed by geology lab Green Gas DPB
 
and/or  
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