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
Stemknuten, Eigersund, Rogaland, Norway


Locality type:Prospect
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 Stemknuten, Eigersund, Rogaland, Norway
Data Identifiers
Mindat Occurrence Record ID:945815
Long-form Identifier:1:3:945815:4
GUID (UUID V4):0
Nearest other occurrences of Biotite
2.2km (1.4 miles) ⓘTunshomstølen, Lund, Rogaland, Norway
7.3km (4.5 miles) ⓘHovland Molybdenum Prospects, Ørsdalen Mines, Bjerkreim, Rogaland, Norway
8.0km (5.0 miles) ⓘØrsdalen Mines, Bjerkreim, Rogaland, Norway
8.7km (5.4 miles) ⓘBjuland Copper Prospect, Lund, Rogaland, Norway
9.1km (5.6 miles) ⓘØykjalifjellet Iron Prospects, Bjerkreim, Rogaland, Norway
9.8km (6.1 miles) ⓘØykjalifjellet Pegmatite Locality, Bjerkreim, Rogaland, Norway
11.2km (6.9 miles) ⓘVasshus Ti-V-P Deposit, Lund, Rogaland, Norway
11.7km (7.3 miles) ⓘBilstadvatnet West Ti-V-P Deposit, Lund, Rogaland, Norway
12.8km (7.9 miles) ⓘTeksevatnet Ti-V-P Deposit, Lund, Rogaland, Norway
14.2km (8.8 miles) ⓘTeksevatnet South, Eigersund, Rogaland, Norway
References
Geological Survey of Norway (NGU): The Ore Database. Deposit Area 1101 - 018. Stemknuten
 
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