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
Rockvale arsenic mine, Rockvale, Clarke 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 Rockvale arsenic mine, Rockvale, Clarke Co., New South Wales, Australia
Data Identifiers
Mindat Occurrence Record ID:1254292
Long-form Identifier:1:3:1254292:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
2.2km (1.4 miles) ⓘRuby Silver Mine, Rockvale, Clarke Co., New South Wales, Australia
3.8km (2.4 miles) ⓘUnion Jack, Clarke Co., New South Wales, Australia
4.1km (2.6 miles) ⓘSilver Point Mine, Sandon Co., New South Wales, Australia
4.7km (2.9 miles) ⓘMikes Reef, Conningdale, Sandon Co., New South Wales, Australia
4.7km (2.9 miles) ⓘThe Little Nell, Sandon Co., New South Wales, Australia
5.4km (3.3 miles) ⓘPoint Reef, Conningdale, Sandon Co., New South Wales, Australia
6.5km (4.1 miles) ⓘMcRaes claim, Clarke Co., New South Wales, Australia
6.7km (4.2 miles) ⓘDella Mine, Clarke Co., New South Wales, Australia
7.0km (4.3 miles) ⓘConningdale Mine, Conningdale, Sandon Co., New South Wales, Australia
18.0km (11.2 miles) ⓘRock Abbey Mine (Magdell Mine), Clarke Co., New South Wales, Australia
References
Gilligan, L. B., Brownlow, J. W., Cameron, R. G., Henley, H. F. (1992) Metallogenic Study and Mineral Deposit Data Sheets: Dorrigo-Coffs Harbour 1:250 000 Metallogenic Map SH/56-10, SH/56-11. Geological Survey of New South Wales, Sydney. 509pp.
 
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