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
Nababeep West Mine (Nababeep Near West mine), Nababeep tungsten mines, Nababeep, Okiep Copper District, Namakwa District Municipality, Northern Cape, South Africa


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 Nababeep West Mine (Nababeep Near West mine), Nababeep tungsten mines, Nababeep, Okiep Copper District, Namakwa District Municipality, Northern Cape, South Africa
Data Identifiers
Mindat Occurrence Record ID:899689
Long-form Identifier:1:3:899689:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.8km (0.5 miles) ⓘNababeep Mine, Nababeep, Okiep Copper District, Namakwa District Municipality, Northern Cape, South Africa
12.1km (7.5 miles) ⓘOkiep Copper District, Namakwa District Municipality, Northern Cape, South Africa
12.4km (7.7 miles) ⓘKliphoog Mine, Concordia, Okiep Copper District, Namakwa District Municipality, Northern Cape, South Africa
14.2km (8.8 miles) ⓘNarrap Mine, Okiep Copper District, Namakwa District Municipality, Northern Cape, South Africa
18.7km (11.6 miles) ⓘKoperberg Mine, Carolusberg, Okiep Copper District, Namakwa District Municipality, Northern Cape, South Africa
66.1km (41.0 miles) ⓘKokerboomrand pegmatite, Steinkopf, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
68.5km (42.5 miles) ⓘNoumas I pegmatite (Blesberg), Steinkopf, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
74.4km (46.2 miles) ⓘNorabees I pegmatite, Norrabees pegmatites I-VI, Steinkopf, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
74.9km (46.5 miles) ⓘNorrabees pegmatites I-VI, Steinkopf, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
86.7km (53.9 miles) ⓘHotson 6 Mine, Koenabib farm, Khâi-Ma Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
References
Söhnge, P. G. (1950) The Nababeep Near West tungsten mine, South Africa. American Mineralogist, 35 (9-10) 931-940
 
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