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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Quartz from
Haapaluoma pegmatite, Peräseinäjoki, Seinäjoki, South Ostrobothnia, Finland


Locality type:Quarry
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Tourmaline18
- var Rubellite17
Elbaite15
Lepidolite13
Spodumene12
Cassiterite3
Beryl2
Albite2
Schorl1
Fluorapatite1
Eucryptite1
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Haapaluoma pegmatite, Peräseinäjoki, Seinäjoki, South Ostrobothnia, Finland
Data Identifiers
Mindat Occurrence Record ID:98776
Long-form Identifier:1:3:98776:3
GUID (UUID V4):0
Nearest other occurrences of Quartz
13.2km (8.2 miles) ⓘHunnakko, Alavus, South Ostrobothnia, Finland
17.3km (10.8 miles) ⓘKaatiala pegmatite, Kuortane, South Ostrobothnia, Finland
18.2km (11.3 miles) ⓘTarikko, Seinäjoki, South Ostrobothnia, Finland
22.8km (14.1 miles) ⓘKalliosalo, Seinäjoki, South Ostrobothnia, Finland
25.2km (15.6 miles) ⓘRoutakallio Quarry (Satamo Quarry), Seinäjoki, South Ostrobothnia, Finland
25.8km (16.0 miles) ⓘPerälänjuoni, Pajuluoma, Seinäjoki, South Ostrobothnia, Finland
26.1km (16.2 miles) ⓘPajuluoma, Seinäjoki, South Ostrobothnia, Finland
46.1km (28.6 miles) ⓘVittinki Iron Mines, Ylistaro, Seinäjoki, South Ostrobothnia, Finland
73.4km (45.6 miles) ⓘLappajärvi meteorite crater, Lappajärvi, South Ostrobothnia, Finland
85.9km (53.4 miles) ⓘKeurusselkä impact structure, Pirkanmaa, 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
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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