Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org

Ages for Calcite at Flat Ledge Quarry (Flatledge Quarry), Rockport Granite Company Quarries, Rockport, Essex Co., Massachusetts, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 431.82Ma - 419.82Ma at this locality

Locality age

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Locality ID	Dated Locality	Ref	Ref ID
USGS-Rb-Sr-00936	431.82	419.82	209564	Flat Ledge Quarry (Flatledge Quarry), Rockport Granite Company Quarries, Rockport, Essex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00937	431.82	419.82	209564	Flat Ledge Quarry (Flatledge Quarry), Rockport Granite Company Quarries, Rockport, Essex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00938	431.82	419.82	209564	Flat Ledge Quarry (Flatledge Quarry), Rockport Granite Company Quarries, Rockport, Essex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr