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
Potochnitsa, Krumovgrad Municipality, Kardzhali Province, Bulgaria


Locality type:Village
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 Potochnitsa, Krumovgrad Municipality, Kardzhali Province, Bulgaria
Data Identifiers
Mindat Occurrence Record ID:217006
Long-form Identifier:1:3:217006:0
GUID (UUID V4):0
Nearest other occurrences of Opal
15.7km (9.8 miles) ⓘMadzharovo deposit, Madzharovo, Madzharovo Municipality, Haskovo Province, Bulgaria
19.3km (12.0 miles) ⓘAda Tepe Au deposit, Krumovgrad Municipality, Kardzhali Province, Bulgaria
20.3km (12.6 miles) ⓘZvezdel, Momchilgrad Municipality, Kardzhali Province, Bulgaria
20.9km (13.0 miles) ⓘDachiardite-K occurrence, Zvezdel, Momchilgrad Municipality, Kardzhali Province, Bulgaria
43.9km (27.3 miles) ⓘTatarevo, Mineralni Bani Municipality, Haskovo Province, Bulgaria
77.9km (48.4 miles) ⓘMavrokoryfi prospect, Maroneia-Sapes, Rhodope, Eastern Macedonia and Thrace, Greece
78.4km (48.7 miles) ⓘPerama Hill deposit, Alexandroupoli, Evros, Eastern Macedonia and Thrace, Greece
90.8km (56.4 miles) ⓘKrumovo iron mine, Krumovo, Tundzha Municipality, Yambol Province, Bulgaria
References
www.clmc.bas.bg (2003) http://www.clmc.bas.bg/Annreps/ANNREP8/annrep8.htm
 
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