AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Montana > Corundum var. Sapphire-rich Lamproite Dike

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

   

Corundum var. Sapphire-rich Lamproite Dike from Yogo Gulch Sapphire Mine, Judith Basin County, Montana

 
Corundum var. Sapphire-rich Lamproite Dike from Yogo Gulch Sapphire Mine, Judith Basin County, Montana

Corundum var. Sapphire-rich Lamproite Dike from Yogo Gulch Sapphire Mine, Judith Basin County, Montana

DESCRIPTION:No. 51654
Mineral:Corundum var. Sapphire-rich Lamproite Dike
Locality:Yogo Gulch Sapphire Mine, Judith Basin County, Montana
Description:Portion of moderately-weathered lamproite dike with a fragment of blue sapphire, the blue gem variety of the mineral species corundum, on one edge of the dike. The Yogo Gulch sapphire deposits were discovered in 1894 and are still being worked currently. Ex. Peter B. Nalle (1923-2010) collection
Overall Size:13x8x3 cm
Crystals:
Archived: For reference only

 

 

 

 

 

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