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 Ankerite at Massachusetts, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 379Ma - 336.3Ma 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-06279	379	365				15191	Millstone Hill Quarry, Worcester, Worcester Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
Alexandra-0184	341.9	336.3	Muscovite			5971	Clark Ledge Pegmatite Locality, Chesterfield, Hampshire Co., Massachusetts, USA	Bradley et al. (2016)	CM54_945

Locality age

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
Alexandra-0183	370.89	370.59	Zircon		5971	Clark Ledge Pegmatite Locality, Chesterfield, Hampshire Co., Massachusetts, USA	Bradley et al. (2016)	CM54_945
Alexandra-0184	341.9	336.3	Muscovite		5971	Clark Ledge Pegmatite Locality, Chesterfield, Hampshire Co., Massachusetts, USA	Bradley et al. (2016)	CM54_945
Alexandra-0415	253	227			60895	Leavitt Quarry, Leominster, Worcester Co., Massachusetts, USA	Zartman et al. (1970)	GSAB81_3359
Alexandra-0416	305	275			22413	Stoneham, Middlesex Co., Massachusetts, USA	Zartman et al. (1970)	GSAB81_3359
Alexandra-0417	262	246			22345	Lynnfield, Essex Co., Massachusetts, USA	Zartman et al. (1970)	GSAB81_3359
Alexandra-0418	268	252			22345	Lynnfield, Essex Co., Massachusetts, USA	Zartman et al. (1970)	GSAB81_3359
Alexandra-0419	369	349			22345	Lynnfield, Essex Co., Massachusetts, USA	Zartman et al. (1970)	GSAB81_3359
Bradley_2012_067	373	369	Zircon		5971	Clark Ledge Pegmatite Locality, Chesterfield, Hampshire Co., Massachusetts, USA	McCauley and Bradley (2014)	CM52_183
Bradley_2012_072	396	388	Zircon		15757	Salem, Essex Co., Massachusetts, USA	McCauley and Bradley (2014)	CM52_183
USGS-Rb-Sr-00877	372.14	342.14			15191	Millstone Hill Quarry, Worcester, Worcester Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00934	431.82	419.82			47041	Babson Farm Quarry, Rockport Granite Company Quarries, Rockport, Essex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00935	431.82	419.82			47041	Babson Farm Quarry, Rockport Granite Company Quarries, Rockport, Essex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
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
USGS-Rb-Sr-00947	383.26	335.26			33588	Kallenberg Quarry (Robin Rock Quarry), Lynnfield, Essex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00950	474.27	428.27			22346	Nahant, Essex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00951	503.6	461.6			22346	Nahant, Essex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-01068	361.21	361.21			196053	Bunker Hill Quarry, Quincy, Norfolk Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-01069	364.3	350.3			196053	Bunker Hill Quarry, Quincy, Norfolk Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-01137	460	460			195966	Burlington, Middlesex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-01308	350.45	350.45			206529	Blackburn Circle Locality, Gloucester, Essex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-01309	364.15	364.15			206529	Blackburn Circle Locality, Gloucester, Essex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-01740	398.41	398.41			17267	Wellesley, Norfolk Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-01741	457.15	457.15			17267	Wellesley, Norfolk Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
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-Rb-Sr-06235	641	541			212086	Fletcher Quarry (Milford Pink Quarry), Hopkinton, Middlesex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06237	990	918			33585	I-93/Dascomb Rd. Area, Andover, Essex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06238	398	382	Microcline		33585	I-93/Dascomb Rd. Area, Andover, Essex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06239	242.03	230.03	Muscovite		33585	I-93/Dascomb Rd. Area, Andover, Essex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06241	242.03	230.03	Muscovite		33585	I-93/Dascomb Rd. Area, Andover, Essex Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06279	379	365			15191	Millstone Hill Quarry, Worcester, Worcester Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06280	379	365			15191	Millstone Hill Quarry, Worcester, Worcester Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06281	379	365			15191	Millstone Hill Quarry, Worcester, Worcester Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06282	379	365			15191	Millstone Hill Quarry, Worcester, Worcester Co., Massachusetts, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-U-Th-Pb-00150_206_238	426	418	Zircon		47041	Babson Farm Quarry, Rockport Granite Company Quarries, Rockport, Essex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00150_207_206	457	445	Zircon		47041	Babson Farm Quarry, Rockport Granite Company Quarries, Rockport, Essex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00150_207_235	431	423	Zircon		47041	Babson Farm Quarry, Rockport Granite Company Quarries, Rockport, Essex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-01334_206_238	531	521	Zircon		212086	Fletcher Quarry (Milford Pink Quarry), Hopkinton, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-01334_207_206	624	614	Zircon		212086	Fletcher Quarry (Milford Pink Quarry), Hopkinton, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-01334_207_235	550	538	Zircon		212086	Fletcher Quarry (Milford Pink Quarry), Hopkinton, Middlesex Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
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
USGS-U-Th-Pb-02411_206_238	597	597	Zircon		52181	Hudson & Chester Quarry, Becket, Berkshire Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02411_207_206	774	774	Zircon		52181	Hudson & Chester Quarry, Becket, Berkshire Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02411_207_235	635	635	Zircon		52181	Hudson & Chester Quarry, Becket, Berkshire Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02412_206_238	582	582	Zircon		52181	Hudson & Chester Quarry, Becket, Berkshire Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02412_207_206	757	757	Zircon		52181	Hudson & Chester Quarry, Becket, Berkshire Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02412_207_235	619	619	Zircon		52181	Hudson & Chester Quarry, Becket, Berkshire Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02413_206_238	534	534	Zircon		52181	Hudson & Chester Quarry, Becket, Berkshire Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02413_207_206	705	705	Zircon		52181	Hudson & Chester Quarry, Becket, Berkshire Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02413_207_235	568	568	Zircon		52181	Hudson & Chester Quarry, Becket, Berkshire Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02414_206_238	522	522	Zircon		52181	Hudson & Chester Quarry, Becket, Berkshire Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02414_207_206	683	683	Zircon		52181	Hudson & Chester Quarry, Becket, Berkshire Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-02414_207_235	553	553	Zircon		52181	Hudson & Chester Quarry, Becket, Berkshire Co., Massachusetts, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
vms-01064	470	470		S	5972	Davis Pyrite Mine (Davis Mine; Davis Sulfur Ore Mine), Rowe, Franklin Co., Massachusetts, USA	Moiser et al. (2009)	USGSOFR2009_1034