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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Metagreywacke from
Länttä, Kokkola, Central Ostrobothnia, Finland


Locality type:Deposit
Classification
Type:Metagreywacke
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Metagreywacke data
Locality Data:Click here to view Länttä, Kokkola, Central Ostrobothnia, Finland
Data Identifiers
Mindat Occurrence Record ID:1807781
Long-form Identifier:1:3:1807781:2
GUID (UUID V4):0
Nearest other occurrences of Metagreywacke
14.9km (9.3 miles) ⓘHeikinkangas, Kaustinen, Central Ostrobothnia, Finland
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
20.5km (12.7 miles) ⓘEmmes, Kaustinen, Central Ostrobothnia, Finland
21.3km (13.2 miles) ⓘOutovesi, Kaustinen, Central Ostrobothnia, Finland
21.5km (13.4 miles) ⓘLeviäkangas, Kaustinen, Central Ostrobothnia, Finland
26.4km (16.4 miles) ⓘMatoneva, Kaustinen, Central Ostrobothnia, Finland
29.0km (18.0 miles) ⓘJänislampi, 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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