Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Biotite from
Copper Hill Mine, Burragate, Auckland Co., New South Wales, Australia


Locality type:Mine
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Copper Hill Mine, Burragate, Auckland Co., New South Wales, Australia
Data Identifiers
Mindat Occurrence Record ID:1343592
Long-form Identifier:1:3:1343592:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
5.9km (3.7 miles) ⓘUmbacks shaft, Burragate, Auckland Co., New South Wales, Australia
8.5km (5.3 miles) ⓘJingera Complex, Egan Peaks Nature Reserve, Auckland Co., New South Wales, Australia
12.3km (7.7 miles) ⓘHagger and party workings, Auckland Co., New South Wales, Australia
12.6km (7.8 miles) ⓘWhipstick Mine, Wyndham, Auckland Co., New South Wales, Australia
13.0km (8.1 miles) ⓘWhitby Barite show, Auckland Co., New South Wales, Australia
20.8km (12.9 miles) ⓘDevils Creek Gold Mine (Tantawangalo Gold Lease; Ramsays Farm), Auckland Co., New South Wales, Australia
21.2km (13.2 miles) ⓘSmith deposit (Ten Head mine), Yambulla gold field, Auckland Co., New South Wales, Australia
21.5km (13.4 miles) ⓘKnoxs ML 4, Auckland Co., New South Wales, Australia
22.0km (13.7 miles) ⓘMessiers Tin dredging lease, Cathcart, Wellesley Co., New South Wales, Australia
22.1km (13.7 miles) ⓘTantawangalo Lookout prospect, Auckland Co., New South Wales, Australia
References
Hertzberger, G.A., Barnes, R.G. (1978) Mine Data Sheets to accompany Metallogenic Map Bega 1:125 000 Sheet (SJ-55-4). Geological Survey of New South Wales, Department of Mines.
 
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