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-Ca from
Langsæv Mine, Steinsås, Barbudalen, Arendal, Agder, Norway


Locality type:Mine
Classification
Species:Heulandite-Ca
Formula:(Ca,Na)5(Si27Al9)O72 · 26H2O
Comments:Half the crystal analyzed contained calcian heulandite-K (Nordrum et al 2003)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Heulandite-Ca data
Locality Data:Click here to view Langsæv Mine, Steinsås, Barbudalen, Arendal, Agder, Norway
Data Identifiers
Mindat Occurrence Record ID:625937
Long-form Identifier:1:3:625937:2
GUID (UUID V4):0
Nearest other occurrences of Heulandite-Ca
47.2km (29.3 miles) ⓘStorsynken (Ljosland 10 Feldspar Quarry), Ljosland, Iveland, Agder, Norway
53.6km (33.3 miles) ⓘFlåt Nickel Mines, Flåt, Evje og Hornnes, Agder, Norway
59.6km (37.0 miles) ⓘValberg Quarry, Valberg, Kragerø, Telemark, Norway
71.3km (44.3 miles) ⓘHamre Copper Mine, Bygland, Agder, Norway
88.5km (55.0 miles) ⓘSagåsen Quarry, Sagåsen, Auenlandet, Porsgrunn, Telemark, Norway
89.8km (55.8 miles) ⓘBjørndalen Quarry (Lundhs labrador), Tvedalen, Larvik Commune, Vestfold, Norway
References
Nordrum, Fred Steinar, Larsen, Alf Olav, Erambert, Muriel (2003) Minerals of the heulandite series in Norway - a progress report. Norsk Bergverksmuseum Skrift, 25. 51-62
 
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