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
Khit Ostrov (Khit Island), Loukhsky District, Republic of Karelia, Russia


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:
Kyanite20
Almandine19
Plagioclase15
Corundum11
- var Ruby1
Quartz5
Garnet Group5
Rutile3
Albite3
- var Oligoclase1
Staurolite2
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Khit Ostrov (Khit Island), Loukhsky District, Republic of Karelia, Russia
Data Identifiers
Mindat Occurrence Record ID:370679
Long-form Identifier:1:3:370679:4
GUID (UUID V4):0
Nearest other occurrences of Biotite
3.2km (2.0 miles) ⓘLopatova Guba mica pit, Loukhsky District, Republic of Karelia, Russia
8.1km (5.0 miles) ⓘChupa pegmatite field, Loukhsky District, Republic of Karelia, Russia
9.0km (5.6 miles) ⓘMalinovaya Varaka pegmatite, Chupa Bay, Chupa pegmatite field, Loukhsky District, Republic of Karelia, Russia
10.8km (6.7 miles) ⓘKhetolambina pegmatite, Chupa pegmatite field, Loukhsky District, Republic of Karelia, Russia
14.2km (8.8 miles) ⓘVaratskoe occurrence, Loukhsky District, Republic of Karelia, Russia
27.8km (17.3 miles) ⓘKrivoe ozero (Kartesh), Chupa pegmatite field, Loukhsky District, Republic of Karelia, Russia
49.0km (30.5 miles) ⓘKhizovara kyanite deposit, Khizovaar ore field, Loukhsky District, Republic of Karelia, Russia
62.9km (39.1 miles) ⓘDlinnaya lambina lake, Ambarniy village, Loukhsky District, Republic of Karelia, Russia
62.9km (39.1 miles) ⓘKolvitsa Fe-Ti-V deposit, Tersky District, Murmansk Oblast, Russia
63.8km (39.7 miles) ⓘTiksheozero massif (Tkishozerskii massif; Tiksheozersky), Loukhsky District, Republic of Karelia, Russia
References
Rob Rosenblat
 
and/or  
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