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
Mount Painter No. 2 workings, Mount Painter area, Arkaroola (Arkaroola Wilderness Sanctuary; Arkaroola Station), Pastoral Unincorporated Area, South Australia, Australia


Locality type:Workings
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 Mount Painter No. 2 workings, Mount Painter area, Arkaroola (Arkaroola Wilderness Sanctuary; Arkaroola Station), Pastoral Unincorporated Area, South Australia, Australia
Data Identifiers
Mindat Occurrence Record ID:989133
Long-form Identifier:1:3:989133:3
GUID (UUID V4):0
Nearest other occurrences of Opal
1.2km (0.7 miles) ⓘMt Gee, Arkaroola (Arkaroola Wilderness Sanctuary; Arkaroola Station), Pastoral Unincorporated Area, South Australia, Australia
7.1km (4.4 miles) ⓘPinnacles Mine, Mount Fitton homestead, Mount Freeling, Pastoral Unincorporated Area, South Australia, Australia
11.7km (7.2 miles) ⓘParalana Hot Springs, Arkaroola (Arkaroola Wilderness Sanctuary; Arkaroola Station), Pastoral Unincorporated Area, South Australia, Australia
21.7km (13.5 miles) ⓘO'Donoghue's Castle Mine (O'Donohue's Castle Mine), Vulkathunha-Gammon Ranges National Park, Gammon Ranges, Pastoral Unincorporated Area, South Australia, Australia
References
Brugger, Jöel; Ansermet, Stefan; Pring, Allan (2003) Uranium minerals from Mt Painter, Northern Flinders Ranges, South Australia. Australian Journal of Mineralogy, 9 (1). 15-31
 
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