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
Øyberget Hydropower Station, Dønfoss, Skjåk, Innlandet, Norway


Locality type:Construction Site
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 Øyberget Hydropower Station, Dønfoss, Skjåk, Innlandet, Norway
Data Identifiers
Mindat Occurrence Record ID:695283
Long-form Identifier:1:3:695283:9
GUID (UUID V4):0
Nearest other occurrences of Biotite
11.5km (7.2 miles) ⓘFramruste, Skjåk, Innlandet, Norway
23.3km (14.5 miles) ⓘNetoseter Quarry, Bøverdalen, Lom, Innlandet, Norway
51.4km (31.9 miles) ⓘHeggur tunnel (Fjøra-Tafjord tunnel), Tafjord, Norddal, Fjord, Møre og Romsdal, Norway
57.1km (35.5 miles) ⓘBerdalsbandet Pegmatites, Hurrungane, Berdalen, Luster, Vestland, Norway
69.0km (42.9 miles) ⓘBlåberget Mines, Årdal Copper Mines, Årdal, Vestland, Norway
83.7km (52.0 miles) ⓘKolla, Oppdal, Trøndelag, Norway
89.6km (55.7 miles) ⓘKjøsnesfjorden Hydropower Plant, Jølster, Sunnfjord, Vestland, Norway
92.9km (57.7 miles) ⓘGrimsdalsgruva, Folldal Mines, Folldal, Innlandet, Norway
93.5km (58.1 miles) ⓘSøndre Geitryggen Mines, Folldal Mines, Folldal, Innlandet, Norway
96.1km (59.7 miles) ⓘØrnhammeren, Oppdal, Trøndelag, Norway
References
Garmo, Torgeir T. (2007) Liste over mineralfunna ved Øvre Otta-utbyggjinga 2003-2007 [An inventory of the mineral finds during the construction of Øvre Otta 2003-2007]. Norsk Bergverksmuseum Skrift, 35. 38-39
 
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