AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from South Dakota > Nepheline Syenite

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Online Mineral Museum Archive of Mineral Photographs and Mineral Descriptions from John Betts - Fine Minerals.com and Allminerals.com

   

Nepheline Syenite from 1 mile NE of Etta Mine, Keystone District, Pennington County, South Dakota

 
Nepheline Syenite from 1 mile NE of Etta Mine, Keystone District, Pennington County, South Dakota

Nepheline Syenite from 1 mile NE of Etta Mine, Keystone District, Pennington County, South Dakota

Nepheline Syenite from 1 mile NE of Etta Mine, Keystone District, Pennington County, South Dakota

DESCRIPTION:No. 50267
Mineral:Nepheline Syenite
Locality:1 mile NE of Etta Mine, Keystone District, Pennington County, South Dakota
Description:Specimen of nepheline syenite containing a mixture of several minerals. Nalle suggested the presence of riebeckite, nepheline, cancrinite, etc. Ex. Peter B. Nalle (1923-2010) collection #334; collected 1946
Overall Size:7x7x3 cm
Crystals:
Archived: For reference only

 

 

 

 

 

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