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
Brehy quarry, Tekovská Breznica, Žarnovica District, Banská Bystrica Region, Slovakia


Locality type:Quarry
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Brehy quarry, Tekovská Breznica, Žarnovica District, Banská Bystrica Region, Slovakia
Data Identifiers
Mindat Occurrence Record ID:412062
Long-form Identifier:1:3:412062:9
GUID (UUID V4):0
Nearest other occurrences of Opal
2.9km (1.8 miles) ⓘNová Baňa deposit, Nová Baňa, Žarnovica District, Banská Bystrica Region, Slovakia
12.1km (7.5 miles) ⓘHodruša-Hámre mines, Hodruša-Hámre, Žarnovica District, Banská Bystrica Region, Slovakia
12.5km (7.8 miles) ⓘŽarnovická Huta, Žarnovica, Žarnovica District, Banská Bystrica Region, Slovakia
19.0km (11.8 miles) ⓘBanky, Banská Štiavnica, Banská Štiavnica District, Banská Bystrica Region, Slovakia
19.6km (12.2 miles) ⓘHliník nad Hronom rhyolite quarry, Hliník nad Hronom, Žiar nad Hronom District, Banská Bystrica Region, Slovakia
19.7km (12.3 miles) ⓘMochovce, Kalná nad Hronom, Levice District, Nitra Region, Slovakia
19.8km (12.3 miles) ⓘČervená Studňa, Banská Štiavnica, Banská Štiavnica District, Banská Bystrica Region, Slovakia
22.3km (13.9 miles) ⓘKremenisko, Banská Štiavnica, Banská Štiavnica District, Banská Bystrica Region, Slovakia
25.3km (15.7 miles) ⓘSitnianska Lehôtka, Hontianske Nemce, Krupina District, Banská Bystrica Region, Slovakia
25.3km (15.7 miles) ⓘRohožnica, Veľký Ďur, Levice District, Nitra Region, Slovakia
References
Koděra, Miroslav; Kolektív, A. (1986) Topografická mineralógia Slovenska. Veda Vydavatel'stvo.
 
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