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
Ristiniem peninsula, Pitkyaranta mining district, Pitkyarantsky District, Republic of Karelia, Russia


Locality type:Diggings
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 Ristiniem peninsula, Pitkyaranta mining district, Pitkyarantsky District, Republic of Karelia, Russia
Data Identifiers
Mindat Occurrence Record ID:1493867
Long-form Identifier:1:3:1493867:6
GUID (UUID V4):0
Nearest other occurrences of Biotite
1.1km (0.7 miles) ⓘPitkyaranta mining district, Pitkyarantsky District, Republic of Karelia, Russia
10.7km (6.6 miles) ⓘNuolayniemi deposit, Pitkyaranta mining district, Pitkyarantsky District, Republic of Karelia, Russia
18.2km (11.3 miles) ⓘKitelskoe Sn-Zn deposit, Kitelya, Pitkyarantsky District, Republic of Karelia, Russia
18.2km (11.3 miles) ⓘKitelskoe almandine deposit, Kitelya, Pitkyarantsky District, Republic of Karelia, Russia
20.1km (12.5 miles) ⓘLinnavaara, Pitkyaranta mining district, Pitkyarantsky District, Republic of Karelia, Russia
42.7km (26.5 miles) ⓘRoikonkoski, Suojärvi District, Republic of Karelia, Russia
43.1km (26.8 miles) ⓘHamekoski occurrence, Pitkyarantsky District, Republic of Karelia, Russia
43.9km (27.3 miles) ⓘPakula gold prospect, Alattu-Pakula-Janis ore field, Pitkyarantsky District, Republic of Karelia, Russia
53.6km (33.3 miles) ⓘJalonvaara massive sulphide deposit, Jalonvaara ore field, Suojärvi District, Republic of Karelia, Russia
54.5km (33.9 miles) ⓘHatunoja-2 massive sulphide deposit, Jalonvaara ore field, Suojärvi District, Republic of Karelia, Russia
References
I.V.Pekov. E.A.Vlasov. E.A.Gerasimova Pitkyarantskaya mineralogical practice, Max Press, 2008, 68pp (in Russisan)
 
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