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
Kandalaksha dykes, Kandalakshsky District, Murmansk Oblast, Russia


Locality type:Outcrop
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 Kandalaksha dykes, Kandalakshsky District, Murmansk Oblast, Russia
Data Identifiers
Mindat Occurrence Record ID:1637401
Long-form Identifier:1:3:1637401:2
GUID (UUID V4):0
Nearest other occurrences of Biotite
37.3km (23.2 miles) ⓘNiva alkaline intrusion, Murmansk Oblast, Russia
41.2km (25.6 miles) ⓘAfrikanda complex, Murmansk Oblast, Russia
44.6km (27.7 miles) ⓘLesnaya Varaka Massif, Murmansk Oblast, Russia
47.2km (29.4 miles) ⓘKolvitsa Fe-Ti-V deposit, Tersky District, Murmansk Oblast, Russia
77.9km (48.4 miles) ⓘSalmagorsky complex, Kola Peninsula, Murmansk Oblast, Russia
85.1km (52.9 miles) ⓘMaterial'naya Adit, Yukspor Mountain, Murmansk Oblast, Russia
86.4km (53.7 miles) ⓘKirovskii apatite mine, Kukisvumchorr Mt, Murmansk Oblast, Russia
87.5km (54.4 miles) ⓘLopatova Guba mica pit, Loukhsky District, Republic of Karelia, Russia
88.8km (55.2 miles) ⓘHackman Valley, Yukspor Mountain, Murmansk Oblast, Russia
89.0km (55.3 miles) ⓘYona deposit, Kovdorsky District, Murmansk Oblast, Russia
References
Nosova, A.A., Kopylova, M.G., Sazonova, L.V., Vozniak, A.A., Kargin, A.V., Lebedeva, N.M., Volkova, G.D., Peresetskaya, E.V. (2021) Petrology of lamprophyre dykes in the Kola Alkaline Carbonatite Province (N Europe) Lithos, 398. 106277pp. doi:10.1016/j.lithos.2021.106277
 
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