AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Massachusetts > Calcite over Dolomite

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

   

Calcite over Dolomite from P.J. Keating Company Essex Bituminous Quarry, Dracut, Middlesex County, Massachusetts

 
Calcite over Dolomite from P.J. Keating Company Essex Bituminous Quarry, Dracut, Middlesex County, Massachusetts

Calcite over Dolomite from P.J. Keating Company Essex Bituminous Quarry, Dracut, Middlesex County, Massachusetts

Calcite over Dolomite from P.J. Keating Company Essex Bituminous Quarry, Dracut, Middlesex County, Massachusetts

Calcite over Dolomite from P.J. Keating Company Essex Bituminous Quarry, Dracut, Middlesex County, Massachusetts

Calcite over Dolomite from P.J. Keating Company Essex Bituminous Quarry, Dracut, Middlesex County, Massachusetts

Calcite over Dolomite from P.J. Keating Company Essex Bituminous Quarry, Dracut, Middlesex County, Massachusetts

DESCRIPTION:No. 66472
Mineral:Calcite over Dolomite
Locality:P.J. Keating Company Essex Bituminous Quarry, Dracut, Middlesex County, Massachusetts
Description:Transparent pale-gray calcite crystals to 9 mm over translucent white-brown twisted rhombohedral dolomite crystals to 6 mm. The calcite crystals are hexagonal form, with rhombohedral nail-head terminations, in aggregates to 15 mm of parallel crystals. Ex. John H. Marshall (1931-2008) collection #2262, acquired from Don Wyman
Overall Size:7x4x3.5 cm
Crystals:3-9 mm
Archived: For reference only

 

 

 

 

 

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