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
Kolvitsa Fe-Ti-V deposit, Tersky District, Murmansk Oblast, Russia


Locality type:Deposit
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 Kolvitsa Fe-Ti-V deposit, Tersky District, Murmansk Oblast, Russia
Data Identifiers
Mindat Occurrence Record ID:1652804
Long-form Identifier:1:3:1652804:8
GUID (UUID V4):0
Nearest other occurrences of Biotite
47.2km (29.4 miles) ⓘKandalaksha dykes, Kandalakshsky District, Murmansk Oblast, Russia
52.1km (32.4 miles) ⓘSalmagorsky complex, Kola Peninsula, Murmansk Oblast, Russia
54.7km (34.0 miles) ⓘLesnaya Varaka Massif, Murmansk Oblast, Russia
60.0km (37.3 miles) ⓘLopatova Guba mica pit, Loukhsky District, Republic of Karelia, Russia
60.3km (37.5 miles) ⓘKhetolambina pegmatite, Chupa pegmatite field, Loukhsky District, Republic of Karelia, Russia
62.9km (39.1 miles) ⓘKhit Ostrov (Khit Island), Loukhsky District, Republic of Karelia, Russia
63.6km (39.5 miles) ⓘAfrikanda complex, Murmansk Oblast, Russia
64.9km (40.3 miles) ⓘKrivoe ozero (Kartesh), Chupa pegmatite field, Loukhsky District, Republic of Karelia, Russia
66.5km (41.3 miles) ⓘMalinovaya Varaka pegmatite, Chupa Bay, Chupa pegmatite field, Loukhsky District, Republic of Karelia, Russia
70.8km (44.0 miles) ⓘChupa pegmatite field, Loukhsky District, Republic of Karelia, Russia
References
Serov, Pavel A., Groshev, Nikolay Yu. (2024) Clinopyroxenite-Wehrlite Porya Guba Complex with Fe-Ti-V and PGE-Cu-Ni Mineralization in the Northeastern Part of the Fennoscandian Shield: Evidence of Post-Orogenic Formation from Sm-Nd Isotope System. Minerals, 14 (11). doi:10.3390/min14111099
 
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