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



The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.


Locality Name:
Amherst, Hillsborough Co., New Hampshire, USA

Oldest recorded age at locality: 649
Youngest recorded age at locality: 173

mindat Locality ID: 15270
mindat URL: http://www.mindat.org/loc-15270.html

Tectonic Settings:

Total number of sublocalities beneath "Amherst, Hillsborough Co., New Hampshire, USA": 6
Total number of bottom-level sublocalities: 6

Number of Child Localities: 6
Child Localities:
Blanchard Bog Iron Ore Deposit
Founder's Way Road Cuts
Joppa Hill
Palm & Kolehmainen Quarry
Palm And Koch Granite Quarry
Route 101/101A Road Cuts

Latitude: 42°52'42"N
Longitude: 71°35'53"W
Decimal Degree (lat, lon): 42.878333333333,-71.598055555556
AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
This mineral's age has not yet been recorded.

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al C Ca Ce Cu F Fe H K Mg Na O P Pb S Si Ti W Zn Zr 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllaniteAmphiboleApatiteCalciteChalcopyriteChloriteClayClinozoisiteCorundumCovellite
DiasporeEpidoteFeldsparFluoriteGarnetMalachiteMicaNickelineNoneNot in a structural group
PrehnitePyritePyroxeneQuartzRhodoniteRocksaltRutileScheeliteSphaleriteSpinel
TitaniteVesuvianiteZircon

35 IMA Minerals at location:
Albite  (*)Allanite-(Ce)  (*)Anatase  (*)Annite  (*)Babingtonite  (*)
Calcite  (*)Chalcopyrite  (*)Chamosite  (*)Clinozoisite  (*)Covellite  (*)
Diopside  (*)Epidote  (*)Fluorapatite  (*)Fluorite  (*)Galena  (*)
Goethite  (*)Grossular  (*)Hematite  (*)Ilmenite  (*)Laumontite  (*)
Magnetite  (*)Malachite  (*)Microcline  (*)Muscovite  (*)Pargasite  (*)
Prehnite  (*)Pyrite  (*)Pyrrhotite  (*)Quartz  (*)Rutile  (*)
Scheelite  (*)Sphalerite  (*)Titanite  (*)Vesuvianite  (*)Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Albite  (*)FeldsparNa(AlSi3O8)6491735242461,242462,242463,242464,2424658803
Allanite-(Ce)  (*)Allanite EpidoteCaCe(Al2Fe2+)[Si2O7][SiO4]O(OH)6491731242465706
Anatase  (*)Not in a structural groupTiO264917312424652162
Annite  (*)Mica ClayKFe2+3(AlSi3O10)(OH)21242464356
Babingtonite  (*)RhodoniteCa2Fe2+Fe3+Si5O14(OH)6491731242465161
Calcite  (*)CalciteCa(CO3)6491733242462,242464,24246527770
Chalcopyrite  (*)ChalcopyriteCuFeS2124246227198
Chamosite  (*)Chlorite Clay(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)81242462577
Clinozoisite  (*)Clinozoisite EpidoteCa2Al3[Si2O7][SiO4]O(OH)12424621025
Covellite  (*)CovelliteCuS12424624165
Diopside  (*)PyroxeneCaMgSi2O612424624135
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)6491732242462,2424658173
Fluorapatite  (*)ApatiteCa5(PO4)3F6491733242461,242462,2424652740
Fluorite  (*)FluoriteCaF264917312424659617
Galena  (*)RocksaltPbS124246224243
Goethite  (*)DiasporeFeO(OH)12424627437
Grossular  (*)GarnetCa3Al2(SiO4)312424621544
Hematite  (*)CorundumFe2O36491732242462,24246514640
Ilmenite  (*)CorundumFe2+Ti4+O312424645433
Laumontite  (*)Not in a structural groupCaAl2Si4O12·4H2O64917312424651271
Magnetite  (*)SpinelFe2+Fe3+2O46491733242461,242464,24246514899
Malachite  (*)MalachiteCu2(CO3)(OH)2124246212537
Microcline  (*)FeldsparK(AlSi3O8)3242461,242463,2424644924
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)26491733242461,242464,24246517380
Pargasite  (*)AmphiboleNaCa2(Mg4Al)(Si6Al2)O22(OH)21242462313
Prehnite  (*)PrehniteCa2Al(Si3Al)O10(OH)264917312424651898
Pyrite  (*)PyriteFeS26491732242462,24246539462
Pyrrhotite  (*)NickelineFe7S812424649056
Quartz  (*)QuartzSiO26491735242461,242462,242463,242464,24246561156
Rutile  (*)RutileTiO264917312424655614
Scheelite  (*)ScheeliteCa(WO4)12424624894
Sphalerite  (*)SphaleriteZnS6491732242462,24246521482
Titanite  (*)TitaniteCaTi(SiO4)O6491732242462,2424654899
Vesuvianite  (*)Vesuvianite(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)1012424621395
Zircon  (*)ZirconZr(SiO4)6493782242461,2424655251


18 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
USGS-U-Th-Pb-00410_206_238406398402±4206_238 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00410_207_206649625637±12207_206 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00410_207_235443435439±4207_235 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00411_206_238409401405±4206_238 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00411_207_206594574584±10207_206 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00411_207_235436428432±4207_235 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00412_206_238386378382±4206_238 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00412_207_206595575585±10207_206 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00412_207_235415407411±4207_235 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00413_206_238404396400±4206_238 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00413_207_206536516526±10207_206 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00413_207_235423415419±4207_235 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00414_206_238391383387±4206_238 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00414_207_206542522532±10207_206 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00414_207_235412404408±4207_235 zircon   Zircon  22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00415_206_238177173175±2206_238age of metamorphic crystallizationmonazite     22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00415_207_206293285289±4207_206age of metamorphic crystallizationmonazite     22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00415_207_235184180182±2207_235age of metamorphic crystallizationmonazite     22967Route 101/101A Road Cuts, Amherst, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 

SampleSource LocalityReference URL

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