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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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Cummingtonite from
Birkeland mines (Sauda mines), Sauda, Rogaland, Norway


03074340017366796531904.jpg
Cummingtonite

Birkeland mines, Sauda, Rogaland, Norway
03099870017272034434493.jpg
Cummingtonite

Birkeland mines, Sauda, Rogaland, Norway
09498570017271922308456.jpg
Cummingtonite

Birkeland mines, Sauda, Rogaland, Norway
03099870017272034434493.jpg
Cummingtonite

Birkeland mines, Sauda, Rogaland, Norway
09498570017271922308456.jpg
Cummingtonite

Birkeland mines, Sauda, Rogaland, Norway
03099870017272034434493.jpg
Cummingtonite

Birkeland mines, Sauda, Rogaland, Norway
Locality type:Mine
Classification
Species:Cummingtonite
Formula:◻Mg2Mg5(Si8O22)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cummingtonite data
Locality Data:Click here to view Birkeland mines (Sauda mines), Sauda, Rogaland, Norway
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:170646
Long-form Identifier:1:3:170646:8
GUID (UUID V4):0
Nearest other occurrences of Cummingtonite
72.6km (45.1 miles) ⓘKaldevassdalen, Tokke, Telemark, Norway
References
Carstens, C. W. (1919) Cummingtonit fra Saude, Ryfylke [Cummingtonite from Saude, Ryfylke]. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 5 (2-3) 351-357
Kristiansen, Harald (1989) Birkeland sinkgruver i Sauda- en ny turistattraksjon. NAGS-NYTT, 16 (4) 18-19
Bryhni, Inge (1993) Minerals from Sauda, Rogaland. Mineralogisk-Geologisk Museum - Universitetet i Oslo - Interne notater, Geologisk Museums venner. 199-205
 
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