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
Stuart Creek Opal Diggings, Mulgaria, Pastoral Unincorporated Area, South Australia, Australia


Locality type:Diggings
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 Stuart Creek Opal Diggings, Mulgaria, Pastoral Unincorporated Area, South Australia, Australia
Data Identifiers
Mindat Occurrence Record ID:104193
Long-form Identifier:1:3:104193:4
GUID (UUID V4):0
Nearest other occurrences of Opal
40.2km (24.9 miles) ⓘTreloars opal field, Andamooka opal fields, Andamooka Station, Pastoral Unincorporated Area, South Australia, Australia
40.5km (25.2 miles) ⓘHard Hill opal field, Andamooka opal fields, Andamooka Station, Pastoral Unincorporated Area, South Australia, Australia
40.9km (25.4 miles) ⓘGerman Gully, Andamooka opal fields, Andamooka Station, Pastoral Unincorporated Area, South Australia, Australia
41.0km (25.5 miles) ⓘHorse Paddock diggings, Andamooka opal fields, Andamooka Station, Pastoral Unincorporated Area, South Australia, Australia
76.1km (47.3 miles) ⓘDunns Deposit (Willouran Mine), Witchelina Nature Reserve (Witchelina), Pastoral Unincorporated Area, South Australia, Australia
93.5km (58.1 miles) ⓘMarree, Pastoral Unincorporated Area, South Australia, Australia
References
Thiry, M., & Milnes, A. R. (1991). Pedogenic and groundwater silcretes at Stuart Creek opal field, South Australia. Journal of Sedimentary Research, 61(1).
 
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