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
Olserum, Gamleby, Västervik, Kalmar County, Sweden


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
Associated Minerals Based on Photo Data:
Xenotime-(Y)4
Monazite-(Ce)2
Quartz1
Amphibole Supergroup1
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Olserum, Gamleby, Västervik, Kalmar County, Sweden
Data Identifiers
Mindat Occurrence Record ID:855008
Long-form Identifier:1:3:855008:8
GUID (UUID V4):0
Nearest other occurrences of Biotite
23.9km (14.8 miles) ⓘSkrikerum Mine, Valdemarsvik, Östergötland County, Sweden
38.5km (23.9 miles) ⓘÅtvidaberg licence area, Åtvidaberg Mining Field, Åtvidaberg, Östergötland County, Sweden
43.5km (27.1 miles) ⓘSolstad mine, Oskarshamn, Kalmar County, Sweden
54.0km (33.5 miles) ⓘAskaremåla, Oskarshamn, Kalmar County, Sweden
55.4km (34.4 miles) ⓘKråkemåla, Oskarshamn, Kalmar County, Sweden
60.2km (37.4 miles) ⓘÄspö Hard Rock Laboratory (Äspö underground laboratory), Oskarshamn, Kalmar County, Sweden
77.5km (48.2 miles) ⓘLertorp quarry, Askeryd, Aneby, Jönköping County, Sweden
78.2km (48.6 miles) ⓘFagerhultasjön quarry, Karlstorp, Vetlanda, Jönköping County, Sweden
78.3km (48.7 miles) ⓘEldstorp 1 Quarry, Askeryd, Aneby, Jönköping County, Sweden
79.7km (49.5 miles) ⓘEldstorp 2-quarry, Askeryd, Aneby, Jönköping County, Sweden
References
www.sec.gov (n.d.) http://www.sec.gov/Archives/edgar/data/1474547/000094935313000072/exh99-1_report.htm
Fullerton, W. (2014). REE mineralisation and metasomatic alteration in the Olserum metasediments. Dissertations in Geology at Lund University. No. 411, 85 pp. 45 hp
 
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