Artjärvi, Wiborg, Southern Karelia, Etelä-Suomen Lääni, Finland

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Wiborgite, with megacrysts of alkali feldspars (ovoids) mantled by An 38-33, in medium-grained granite matrix. Wiborg rapakivi batholith.

Mineral List:

Albite
var: Andesine
'Alkali Feldspar'
Annite
Biotite
'Chlorite Group'

Fayalite
Glaucophane
'Hornblende'
Iddingsite
Ilmenite

Magnetite
Quartz
Siderophyllite

13 entries listed. 7 valid minerals.

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