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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Heulandite Subgroup from
Torbjørnsbu Mine, Barbudalen, Arendal, Agder, Norway


Locality type:Mine
Classification
Species:'Heulandite Subgroup' (not an IMA approved species)
Formula:(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Heulandite Subgroup data
Locality Data:Click here to view Torbjørnsbu Mine, Barbudalen, Arendal, Agder, Norway
Data Identifiers
Mindat Occurrence Record ID:672978
Long-form Identifier:1:3:672978:3
GUID (UUID V4):0
Nearest other occurrences of Heulandite Subgroup
5.8km (3.6 miles) ⓘRannekleiv Mine, Øyestad, Arendal, Agder, Norway
6.6km (4.1 miles) ⓘMørefjær Feldspar Quarry (Mörefjer), Stokken, Arendal, Agder, Norway
6.7km (4.2 miles) ⓘGamle Mørefjær Mine (Mørfjær Mine), Neskilen Mines, Arendal, Agder, Norway
8.5km (5.3 miles) ⓘTømmerkaia, Eydehavn, Stokken, Arendal, Agder, Norway
34.9km (21.7 miles) ⓘMoland Industrial Site, Akland, Risør, Agder, Norway
37.7km (23.4 miles) ⓘRavneberget Quarry, Søndeled, Risør, Agder, Norway
50.7km (31.5 miles) ⓘSandkilvegen Quarry, Høvringsvatnet, Evje og Hornnes, Agder, Norway
59.0km (36.7 miles) ⓘØstland, Kragerø, Telemark, Norway
59.6km (37.1 miles) ⓘTjovhola, Neset, Bygland, Agder, Norway
60.3km (37.4 miles) ⓘValberg Quarry, Valberg, Kragerø, Telemark, Norway
References
Weibye, Paul Christian (1848) Beiträge zur topograpischen Mineralogie Norwegens. Archiv für Mineralogie, Geognosie, Bergbau und Hüttenkunde, 22. 465-544
 
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