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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Metavolcanic rock from
Länttä, Kokkola, Central Ostrobothnia, Finland


Locality type:Deposit
Classification
Type:Metavolcanic rock
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Metavolcanic rock data
Locality Data:Click here to view Länttä, Kokkola, Central Ostrobothnia, Finland
Data Identifiers
Mindat Occurrence Record ID:1807784
Long-form Identifier:1:3:1807784:9
GUID (UUID V4):0
Nearest other occurrences of Metavolcanic rock
15.3km (9.5 miles) ⓘRapasaaret, Kaustinen, Central Ostrobothnia, Finland
15.8km (9.8 miles) ⓘPäiväneva, Kaustinen, Central Ostrobothnia, Finland
16.9km (10.5 miles) ⓘTuoreetsaaret, Kaustinen, Central Ostrobothnia, Finland
18.2km (11.3 miles) ⓘSyväjärvi, Seinäjoki, South Ostrobothnia, Finland
18.2km (11.3 miles) ⓘSyväjärv, Kaustinen, Central Ostrobothnia, Finland
21.5km (13.4 miles) ⓘLeviäkangas, Kaustinen, Central Ostrobothnia, Finland
29.7km (18.4 miles) ⓘKellokallio, Veteli, Central Ostrobothnia, Finland
34.6km (21.5 miles) ⓘDragbacken, Ostrobothnia, Finland
References
Lynch, Edward P.; Szentpéteri, Krisztián; Andersson, Joel B.H.; Kuusela, Janne; Sadeghi, Martiya; Bauer, Tobias E. (2025) Lithium-caesium-tantalum (LCT) pegmatite mineralization in the Paleoproterozoic central Fennoscandian Shield (Sweden and Finland): A review of geological characteristics and assessment of mineral system commonalities. Ore Geology Reviews, 184. 106739 doi:10.1016/j.oregeorev.2025.106739
 
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