AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Pennsylvania > Calcite (twinned crystals)

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Online Mineral Museum Archive of Mineral Photographs and Mineral Descriptions from John Betts - 
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Calcite (twinned crystals) from Roosevelt Avenue Quarry (York Stone Quarry), York, York County, Pennsylvania

 
Calcite (twinned crystals) from Roosevelt Avenue Quarry (York Stone Quarry), York, York County, Pennsylvania

Calcite (twinned crystals) from Roosevelt Avenue Quarry (York Stone Quarry), York, York County, Pennsylvania

Calcite (twinned crystals) from Roosevelt Avenue Quarry (York Stone Quarry), York, York County, Pennsylvania

Photo below under shortwave ultraviolet illumination:
Calcite (twinned crystals) from Roosevelt Avenue Quarry (York Stone Quarry), York, York County, Pennsylvania

DESCRIPTION:No. 57331
Mineral:Calcite (twinned crystals)
Locality:Roosevelt Avenue Quarry (York Stone Quarry), York, York County, Pennsylvania
Description:Many translucent yellow calcite crystals that have a flatted rhombic form that is the result of interpenetrant twinning. The dull luster on the calcite crystals makes photographing the twins difficult — must be seen in person to appreciate.
Overall Size:8x7.5x6 cm
Crystals:5-35 mm
Archived: For reference only

 

 

 

 

 

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