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
Norrabees pegmatites I-VI, Steinkopf, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa


Locality type:Pegmatite Field
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 Norrabees pegmatites I-VI, Steinkopf, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
Data Identifiers
Mindat Occurrence Record ID:1258708
Long-form Identifier:1:3:1258708:9
GUID (UUID V4):0
Localities for Biotite in this Region
Norabees I pegmatite, Norrabees pegmatites I-VI, Steinkopf, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
Nearest other occurrences of Biotite
1.3km (0.8 miles) ⓘNorabees I pegmatite, Norrabees pegmatites I-VI, Steinkopf, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
15.6km (9.7 miles) ⓘKokerboomrand pegmatite, Steinkopf, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
24.3km (15.1 miles) ⓘNoumas I pegmatite (Blesberg), Steinkopf, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
28.6km (17.8 miles) ⓘHaib River copper-molybdenum deposit, Tsams Farm 685, Karasburg West, ǁKaras Region, Namibia
52.6km (32.7 miles) ⓘHotson 6 Mine, Koenabib farm, Khâi-Ma Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
69.5km (43.2 miles) ⓘKliphoog Mine, Concordia, Okiep Copper District, Namakwa District Municipality, Northern Cape, South Africa
72.4km (45.0 miles) ⓘNarrap Mine, Okiep Copper District, Namakwa District Municipality, Northern Cape, South Africa
73.2km (45.5 miles) ⓘOkiep Copper District, Namakwa District Municipality, Northern Cape, South Africa
74.8km (46.5 miles) ⓘNababeep Mine, Nababeep, Okiep Copper District, Namakwa District Municipality, Northern Cape, South Africa
74.9km (46.5 miles) ⓘNababeep West Mine (Nababeep Near West mine), Nababeep tungsten mines, Nababeep, Okiep Copper District, Namakwa District Municipality, Northern Cape, South Africa
References
Baldwin, Joy Rosina (1994) Lithium and tantalum mineralization in rare-element pegmatites from southern Africa. PhD Doctor of Philosophy, University of St Andrews, St Andrews, Scotland. 314pp.
 
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