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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Chalcedony from
U Pustého Mlýna Quarry, Hrubšice, Ivančice, Brno-Country District, South Moravian Region, Czech Republic


Locality type:Quarry
Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view U Pustého Mlýna Quarry, Hrubšice, Ivančice, Brno-Country District, South Moravian Region, Czech Republic
Data Identifiers
Mindat Occurrence Record ID:480595
Long-form Identifier:1:3:480595:3
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
33.8km (21.0 miles) ⓘResidual rocks outcrop, Řípov, Třebíč, Třebíč District, Vysočina Region, Czech Republic
39.4km (24.5 miles) ⓘVěžná serpentinite quarry, Věžná, Žďár nad Sázavou District, Vysočina Region, Czech Republic
41.6km (25.8 miles) ⓘSeč quarry, Rudice, Blansko District, South Moravian Region, Czech Republic
43.0km (26.7 miles) ⓘRožná pegmatite (Rozna; Roschna), Rožná, Žďár nad Sázavou District, Vysočina Region, Czech Republic
43.3km (26.9 miles) ⓘRožná deposit, Rožná, Žďár nad Sázavou District, Vysočina Region, Czech Republic
46.5km (28.9 miles) ⓘBorovec (Borowetz; Borowitz?), Štěpánov nad Svratkou, Žďár nad Sázavou District, Vysočina Region, Czech Republic
50.4km (31.3 miles) ⓘChalcedony occurrence, Langau, Horn District, Lower Austria, Austria
52.4km (32.5 miles) ⓘWolfsbach, Drosendorf-Zissersdorf, Horn District, Lower Austria, Austria
54.0km (33.6 miles) ⓘDrosendorf, Drosendorf-Zissersdorf, Horn District, Lower Austria, Austria
55.8km (34.7 miles) ⓘZissersdorf, Drosendorf-Zissersdorf, Horn District, Lower Austria, Austria
References
Duda, Rejl, Slivka: "Mineralien", 1991
 
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