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
Mavrokoryfi prospect, Maroneia-Sapes, Rhodope, Eastern Macedonia and Thrace, Greece


Locality type:Prospect
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 Mavrokoryfi prospect, Maroneia-Sapes, Rhodope, Eastern Macedonia and Thrace, Greece
Data Identifiers
Mindat Occurrence Record ID:710367
Long-form Identifier:1:3:710367:4
GUID (UUID V4):0
Nearest other occurrences of Opal
2.2km (1.4 miles) ⓘPerama Hill deposit, Alexandroupoli, Evros, Eastern Macedonia and Thrace, Greece
58.6km (36.4 miles) ⓘAda Tepe Au deposit, Krumovgrad Municipality, Kardzhali Province, Bulgaria
62.8km (39.0 miles) ⓘZvezdel, Momchilgrad Municipality, Kardzhali Province, Bulgaria
63.2km (39.3 miles) ⓘDachiardite-K occurrence, Zvezdel, Momchilgrad Municipality, Kardzhali Province, Bulgaria
77.9km (48.4 miles) ⓘPotochnitsa, Krumovgrad Municipality, Kardzhali Province, Bulgaria
82.6km (51.3 miles) ⓘMadzharovo deposit, Madzharovo, Madzharovo Municipality, Haskovo Province, Bulgaria
References
Voudouris, P. (2005). Mineralogy of the high-sulfidation Cu-Sb-Te Mavrokoryfi prospect (western Thrace, Greece). In Mineral Deposit Research: Meeting the Global Challenge (pp. 1435-1438). Springer, Berlin, Heidelberg.
Voudouris, Panagiotis Christos (2011) Conditions of formation of the Mavrokoryfi high-sulfidation epithermal Cu–Ag–Au–Te mineralization (Petrota Graben, NE Greece) Mineralogy and Petrology, 101 (1) 97-113 doi:10.1007/s00710-010-0139-1
 
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