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
Olenii Ruchei (Olenii Creek; Oleny Ruchei), Carbonatite Stock in the vicinity of Tul'ilukht Bay, Murmansk Oblast, Russia


Locality type:Creek
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 Olenii Ruchei (Olenii Creek; Oleny Ruchei), Carbonatite Stock in the vicinity of Tul'ilukht Bay, Murmansk Oblast, Russia
Data Identifiers
Mindat Occurrence Record ID:535254
Long-form Identifier:1:3:535254:8
GUID (UUID V4):0
Nearest other occurrences of Biotite
3.9km (2.4 miles) ⓘCarbonatite Stock in the vicinity of Tul'ilukht Bay, Murmansk Oblast, Russia
15.9km (9.9 miles) ⓘYukspor Mountain, Murmansk Oblast, Russia
16.6km (10.3 miles) ⓘHackman Valley, Yukspor Mountain, Murmansk Oblast, Russia
18.3km (11.4 miles) ⓘTuliok River head, East slope, Kukisvumchorr Mt, Murmansk Oblast, Russia
18.5km (11.5 miles) ⓘVuonnemiok River Valley, Murmansk Oblast, Russia
19.7km (12.3 miles) ⓘKirovskii apatite mine, Kukisvumchorr Mt, Murmansk Oblast, Russia
20.3km (12.6 miles) ⓘMarchenko Peak, Kukisvumchorr Mt, Murmansk Oblast, Russia
20.3km (12.6 miles) ⓘMaterial'naya Adit, Yukspor Mountain, Murmansk Oblast, Russia
25.9km (16.1 miles) ⓘYubileinaya pegmatite, Karnasurt Mountain, Lovozersky District, Murmansk Oblast, Russia
55.3km (34.4 miles) ⓘSalmagorsky complex, Kola Peninsula, Murmansk Oblast, Russia
References
Pavel M. Kartashov (n.d.) analytical data.
 
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