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 Epidote at Marinette Co., Wisconsin, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1821.81Ma - 821.9Ma at this locality

Age range from children

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
USGS-Rb-Sr-03463	1821.81	1721.81				51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-U-Th-Pb-00114_206_238	845.9	821.9	Zircon			51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb

Locality age

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Dated Locality ID	Dated Locality	Ref	Ref ID
USGS-Rb-Sr-03463	1821.81	1721.81		51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-03464	1716.01	1716.01		51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-03465	1821.81	1721.81		51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-03466	1697.41	1697.41		51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-03477	1620.97	1536.97		51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-03478	1641.62	1641.62		51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-U-Th-Pb-00112_206_238	1122.9	1090.9	Zircon	51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00112_207_206	1791.6	1737.6	Zircon	51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00112_207_235	1373.2	1331.2	Zircon	51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00113_206_238	1229.1	1193.1	Zircon	51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00113_207_206	1790.7	1736.7	Zircon	51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00113_207_235	1447.2	1405.2	Zircon	51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00114_206_238	845.9	821.9	Zircon	51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00114_207_206	1711.4	1663.4	Zircon	51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00114_207_235	1122.4	1088.4	Zircon	51821	Mt. Tom Quarry (Middle Inlet Quarry), Middle Inlet Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00122_206_238	997.8	967.8	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00122_207_206	1703.1	1653.1	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00122_207_235	1241.9	1205.9	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00123_206_238	1002.7	972.7	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00123_207_206	1706.9	1654.9	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00123_207_235	1246.8	1210.8	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00124_206_238	1077.2	1047.2	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00124_207_206	1738.2	1686.2	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00124_207_235	1317.9	1277.9	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00125_206_238	806.2	782.2	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00125_207_206	1613.8	1565.8	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00125_207_235	1051.3	1021.3	Zircon	263330	Niagara Township, Marinette Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb