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 Monazite-(Ce) at Westford, Middlesex Co., Massachusetts, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 427.32Ma - 285.32Ma at this locality

Locality age

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Dated Locality ID	Dated Locality	Ref	Ref ID
USGS-Rb-Sr-03298	427.32	285.32		220591	Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-03299	427.32	285.32		220591	Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-U-Th-Pb-01362_206_238	360	352	Zircon	220591	Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-01362_207_206	391	385	Zircon	220591	Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-01362_207_235	364	356	Zircon	220591	Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-01363_206_238	368	360	Zircon	220591	Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-01363_207_206	391	385	Zircon	220591	Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-01363_207_235	371	363	Zircon	220591	Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-01364_206_238	361	353	Zircon	220591	Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-01364_207_206	395	387	Zircon	220591	Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-01364_207_235	366	358	Zircon	220591	Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-01365_206_238	354	346	Zircon	220591	Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-01365_207_206	394	386	Zircon	220591	Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-01365_207_235	360	352	Zircon	220591	Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb