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 Actinolite at Portage Co., Wisconsin, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 1772Ma - 1427Ma 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-U-Th-Pb-00811_207_206	1772	1772	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00812_206_238	1427	1427	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb

Locality age

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-U-Th-Pb-00397_206_238	1498	1498	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00397_207_206	1765	1765	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00397_207_235	1612	1612	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00398_206_238	1448	1448	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00398_207_206	1754	1754	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00398_207_235	1577	1577	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00811_206_238	1494	1494	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00811_207_206	1772	1772	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00811_207_235	1613	1613	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00812_206_238	1427	1427	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00812_207_206	1756	1756	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00812_207_235	1565	1565	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00814_206_238	1448	1448	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00814_207_206	1754	1754	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00814_207_235	1577	1577	Zircon			107406	Stevens Point, Portage Co., Wisconsin, USA	USGS-U-Th-Pb	USGS-U-Th-Pb