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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Opal from
Byrud Emerald Mines, Minnesund, Eidsvoll, Akershus, Norway


Locality type:Mine
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Byrud Emerald Mines, Minnesund, Eidsvoll, Akershus, Norway
Data Identifiers
Mindat Occurrence Record ID:484318
Long-form Identifier:1:3:484318:4
GUID (UUID V4):0
Nearest other occurrences of Opal
25.2km (15.7 miles) ⓘMidtmoen, Øståsen, Lunner, Akershus, Norway
40.3km (25.0 miles) ⓘGjerdingselva, Lunner, Akershus, Norway
42.8km (26.6 miles) ⓘDelebekken Quarry, Nittedal, Akershus, Norway
49.4km (30.7 miles) ⓘBjønndalen Quarry, Nittedal, Akershus, Norway
50.8km (31.5 miles) ⓘGjelleråsen, Nittedal, Akershus, Norway
51.6km (32.1 miles) ⓘKristiansen Quarry (Bånkall Quarry), Bånkall, Grorud, Oslo, Norway
53.1km (33.0 miles) ⓘHuken Quarry, Grorud, Oslo, Norway
81.8km (50.8 miles) ⓘVardåsen Tunnel, Asker, Akershus, Norway
81.9km (50.9 miles) ⓘHeggedalsveien, Asker, Akershus, Norway
83.7km (52.0 miles) ⓘLierskogen Quarry, Lierskogen, Lier, Buskerud, Norway
References
Kvamsdal, Lars O., Eldjarn, Knut (2006) Mineralene i smaragdgruvene ved Byrud gård, Minnesund, Norge. STEIN. Nordisk magasin for populær geologi, 33 (4) 4-20
 
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