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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Thalénite-(Y) from
Høgetveit Feldspar Quarries, Evje og Hornnes, Agder, Norway


Locality type:Quarry
Classification
Species:Thalénite-(Y)
Formula:Y3Si3O10F
Comments:The metamict mineral that Schetelig (1931) described as thalenite is showed to be a beta-phase of Y2Si2O7 with a thortveitite structure. This is identical with the mineral described as Keiviite -(Y) from Kola, Russia by Voloshin et al (1983)
Confirmation
Validity:Erroneously Reported
Data
Mineral Data:Click here to view Thalénite-(Y) data
Locality Data:Click here to view Høgetveit Feldspar Quarries, Evje og Hornnes, Agder, Norway
Data Identifiers
Mindat Occurrence Record ID:10963
Long-form Identifier:1:3:10963:9
GUID (UUID V4):0
Nearest other occurrences of Thalénite-(Y)
5.5km (3.4 miles) ⓘKåbuland, Iveland, Agder, Norway
6.0km (3.7 miles) ⓘKåbuland 04 Feldspar Quarry, Kåbuland, Iveland, Agder, Norway
7.8km (4.9 miles) ⓘStøledalen 01 Feldspar Quarry, Støledalen, Iveland, Agder, Norway
14.5km (9.0 miles) ⓘRossås 14 Feldspar Quarry, Rossås, Iveland, Agder, Norway
15.6km (9.7 miles) ⓘRossås 01 Feldspar Quarry, Rossås, Iveland, Agder, Norway
16.0km (9.9 miles) ⓘIvedal 1 Feldspar Prospect, Ivedal, Iveland, Agder, Norway
26.9km (16.7 miles) ⓘReiersdal Nedre, Reiersdal Feldspar Quarries, Øvrebø, Vennesla, Agder, Norway
86.5km (53.8 miles) ⓘHøydalen, Tørdal, Drangedal, Telemark, Norway
References
Bjørlykke, Knut (1935) The mineral paragenesis and classification of the granite pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 14 (3-4). 211-311
 
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