Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Beryl from
Kaatiala pegmatite, Kuortane, South Ostrobothnia, Finland


Locality type:Pegmatite
Classification
Species:Beryl
Formula:Be3Al2(Si6O18)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Beryl data
Locality Data:Click here to view Kaatiala pegmatite, Kuortane, South Ostrobothnia, Finland
Data Identifiers
Mindat Occurrence Record ID:640671
Long-form Identifier:1:3:640671:4
GUID (UUID V4):0
Nearest other occurrences of Beryl
5.3km (3.3 miles) ⓘHunnakko, Alavus, South Ostrobothnia, Finland
16.6km (10.3 miles) ⓘTarinkorpi, Seinäjoki, South Ostrobothnia, Finland
16.6km (10.3 miles) ⓘTarikko, Seinäjoki, South Ostrobothnia, Finland
17.3km (10.8 miles) ⓘHaapaluoma pegmatite, Peräseinäjoki, Seinäjoki, South Ostrobothnia, Finland
29.7km (18.4 miles) ⓘP-K pegmatite, Seinäjoki, South Ostrobothnia, Finland
30.4km (18.9 miles) ⓘRautatienkatu, Seinäjoki, South Ostrobothnia, Finland
30.9km (19.2 miles) ⓘPajuluoma, Seinäjoki, South Ostrobothnia, Finland
31.0km (19.2 miles) ⓘPerälänjuoni, Pajuluoma, Seinäjoki, South Ostrobothnia, Finland
31.7km (19.7 miles) ⓘPuolivälinkalliot pegmatite, Seinäjoki, South Ostrobothnia, Finland
81.3km (50.5 miles) ⓘKellokallio, Veteli, Central Ostrobothnia, Finland
References
Haapala, Ilmari (1966) On the granitic pegmatites in the Peräseinäjoki-Alavus area, South Pohjanmaa, Finland. Bulletin de la Commission Géologique de Finlande Vol. 224. Geological Survey of Finland
Wilke, Hans-Jürgen (1976) Mineralfundstellen - Ein Führer zum Selbstsammeln Vol. 4 - Skandinavien. Christian Weise Verlag. 370 pp.
Makitie, H., Karkkainen, N., Lahti, S. I., & Alviola, R. (2001). Compositional variation of granitic pegmatites in relation to regional metamorphism in the Seinajoki region, western Finland. Special Paper 30 - Geological Survey of Finland, 31-59.
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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