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Gugiaite from
Thorstein Quarry, Brunlanes, Larvik, Vestfold, Norway


Locality type:Quarry
Classification
Species:Gugiaite
Formula:Ca2Be[Si2O7]
Comments:Collected in the early 1980s and identified as leucophanite, but recent studies at the Oslo University Mineralogical Museum have identified the mineral as gugiaite. But hydroxyl was not determined and as with other previously analyzed gugiaites, it could be the newly described mineral hydroxylgugiaite, Knut Eldjarn comment in caption on photo-58820, mars 2017.

See also messageboard at https://www.mindat.org/mesg-7-406626.html
Confirmation
Validity:Unconfirmed/Questioned
Associated Minerals Based on Photo Data:
Analcime1 photo of Gugiaite associated with Analcime at this locality.
Aegirine1 photo of Gugiaite associated with Aegirine at this locality.
Data
Mineral Data:Click here to view Gugiaite data
Locality Data:Click here to view Thorstein Quarry, Brunlanes, Larvik, Vestfold, Norway
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:859960
Long-form Identifier:1:3:859960:5
GUID (UUID V4):7afc50f4-d23d-434e-bf72-44ba581c4f57
Nearest other occurrences of Gugiaite
5.3km (3.3 miles) Saga 1 Quarry, Sagåsen, Auenlandet, Porsgrunn, Telemark, Norway
9.9km (6.2 miles) Ferrochiavennite dike, Blåfjell (E18 roadcuts), Kokkersvold - Blåfjell E18 roadcuts, Langangen, Porsgrunn, Telemark, Norway
References
Reference Search (possible matching items)
Journal (article/letter/editorial)
the mineralogy of the syenite pegmatites in the Larvik Plutonic Gomplex Alf Olav Larsen The book covering...the mineralogy on the syenite pegmatites of the Larvik Plutonic Complex was published three years ago...species found in the syenite pegmatites in the Larvik Plutonic Complex is now close to 210. Pyrrhotite...pure monoclinic polytype, while pyrrhotite from Thorstein is a mixture of monoclinic and hexagonal polytypes...first observed in the syenite pegmatites in the Larvik Plutonic Complex around 1975. The mineral crystallized
Book (edition)
Mineralogisk-Geologisk Museum, University of Oslo, Oslo, Norway. Richard J. Reeder: Dept. of Earth Sciences, State...localities in SON, DGO, and ZAC. Kongsberg(!), Norway (large specimens of crystallized and wire silver);...Greenland; Barrowdale, Cumbria, England; Kongsberg, Norway; St. Michel and Pargas, Finland; Passau, Bavaria...Pribram(*), Czech Republic; Kongsberg and Sulitjelma, Norway; Consols mine(*), Broken Hill, NSW, Australia,...Mexico; Liskeard, Cornwall, England; Kongsberg, Norway; Andreasberg, Harz, and Freiberg, Saxony, Germany;
 
Mineral and/or Locality  
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