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⇱ Thortveitite from Landsverk 3 Feldspar Quarry, Landsverk, Evje og Hornnes, Agder, Norway


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Thortveitite from
Landsverk 3 Feldspar Quarry, Landsverk, Evje og Hornnes, Agder, Norway

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Locality type:Quarry
Classification
Species:Thortveitite
Formula:Sc2Si2O7
Comments:In the summer of 1903 P. Schei found a mineral he could not identify in this quarry, and on the label he wrote "Epidote". Later, samples of an unknown mineral from were shown to feldspar dealer Olaus Thortveit, who subsequently sent them in 1910 to Oslo. It was described in 1911 by Schetelig and named after Olaus Thortveit.

Local collector and miner Theodor Gautestad found many kilos of thortveitite in this quarry, among which possibly the best single crystal in existance:

https://www.mindat.org/photo-662863.html

This specimen is at display in the l'Ecole des Mines in Paris, France.

Much of the thortveitite Gautestad found, was sold to the duPont company in the USA for research purposes.

Quality for species:Excellent - world class for species or very significant. (!!)
Significance:Significant commercial deposit of this mineral.
Abundance at site:Common
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Thortveitite data
Locality Data:Click here to view Landsverk 3 Feldspar Quarry, Landsverk, Evje og Hornnes, Agder, Norway
Photo GalleryView Gallery (4 photos)
Data Identifiers
Mindat Occurrence Record ID:604009
Long-form Identifier:1:3:604009:3
GUID (UUID V4):0
Nearest other occurrences of Thortveitite
0.6km (0.3 miles) Landsverk 1 Feldspar Quarry (Jokeli), Landsverk, Evje og Hornnes, Agder, Norway
2.8km (1.7 miles) Undeland 02 Feldspar Quarry (Beryl quarry), Undeland, Evje og Hornnes, Agder, Norway
3.5km (2.2 miles) Undeland, Evje og Hornnes, Agder, Norway
6.1km (3.8 miles) Kåbuland 01 Feldspar Quarry (Amerika), Kåbuland, Iveland, Agder, Norway
6.1km (3.8 miles) Kåbuland 06 Feldspar Quarry (Tunnelen), Kåbuland, Iveland, Agder, Norway
7.7km (4.8 miles) Kåbuland, Iveland, Agder, Norway
7.9km (4.9 miles) Frikstad 03 Feldspar Quarry (Tuftane), Frikstad, Iveland, Agder, Norway
8.1km (5.1 miles) Frikstad 07 Feldspar Quarry, Frikstad, Iveland, Agder, Norway
8.8km (5.4 miles) Eptevatnet 02 Thortveitite Quarry, Iveland, Agder, Norway
9.0km (5.6 miles) Vatne, Vegusdal, Birkenes, Agder, Norway
References
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To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
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