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
Hammaslahti deposit (Lähdekorpi deposit), Joensuu, North Karelia, Finland


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 Hammaslahti deposit (Lähdekorpi deposit), Joensuu, North Karelia, Finland
Data Identifiers
Mindat Occurrence Record ID:75829
Long-form Identifier:1:3:75829:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
55.7km (34.6 miles) ⓘKylylahti Mine, Polvijärvi, North Karelia, Finland
58.3km (36.3 miles) ⓘVuonos Mine, Outokumpu, North Karelia, Finland
70.8km (44.0 miles) ⓘKivisuo prospect, Ilomantsi, North Karelia, Finland
73.0km (45.4 miles) ⓘKuittila prospect, Ilomantsi, North Karelia, Finland
79.7km (49.5 miles) ⓘJalonvaara massive sulphide deposit, Jalonvaara ore field, Suojärvi District, Republic of Karelia, Russia
80.1km (49.7 miles) ⓘHatunoja-2 massive sulphide deposit, Jalonvaara ore field, Suojärvi District, Republic of Karelia, Russia
83.9km (52.1 miles) ⓘPakula gold prospect, Alattu-Pakula-Janis ore field, Pitkyarantsky District, Republic of Karelia, Russia
85.0km (52.8 miles) ⓘHamekoski occurrence, Pitkyarantsky District, Republic of Karelia, Russia
85.1km (52.9 miles) ⓘPampalo Au deposit, Ilomantsi, North Karelia, Finland
87.1km (54.1 miles) ⓘKorpilampi, Ilomantsi, North Karelia, Finland
References
en.gtk.fi (2007) http://en.gtk.fi/ExplorationFinland/Commodities/Zinc/hammaslahti.html
 
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