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:
Bedford, Hillsborough Co., New Hampshire, USA

Oldest recorded age at locality: 1261
Youngest recorded age at locality: 754

mindat Locality ID: 9120
mindat URL: http://www.mindat.org/loc-9120.html

Tectonic Settings:

Total number of sublocalities beneath "Bedford, Hillsborough Co., New Hampshire, USA": 7
Total number of bottom-level sublocalities: 7

Number of Child Localities: 7
Child Localities:
Cortland Drive Road Cuts
French Quarry
Manning Quarry
Pulpit Road Locality
Riddle Quarry (Lane Quarry)
Route 101 Magnetite Locality
Schwartz Farm Amethyst Locality

Latitude: 42°55'58"N
Longitude: 71°34'57"W
Decimal Degree (lat, lon): 42.932777777778,-71.5825
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 As B C Ca Cu F Fe H K Mg Na O P S Si Ti 

Elements from minerals reported directly at this locality: Al C Ca Cu Fe H K Mg Na O S Si Ti 

Structural Groups for minerals in this locality: 
AmorphousAmphiboleApatiteAragoniteArsenopyriteCalciteChalcopyriteClayClinozoisiteCorundum
DiasporeEpidoteFeldsparGarnetMicaNonePyritePyroxeneQuartzRutile
SpinelTalcTitaniteTourmalineVesuvianite

29 IMA Minerals at location:
Actinolite  (*)Albite  (*)Almandine  (*)Aragonite  (*)Arsenopyrite  (*)
Augite  (*)Calcite  (*)Chalcopyrite  (*)Clinozoisite  (*)Diopside  (*)
Epidote  (*)Fluorapatite  (*)Goethite  (*)Graphite  (*)Grossular  (*)
Hematite  (*)Kalinite  (*)Magnetite  (*)Microcline  (*)Muscovite  (*)
Opal  (*)Pyrite  (*)Quartz  (*)Rutile  (*)Schorl  (*)
Talc  (*)Titanite  (*)Tremolite  (*)Vesuvianite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)2126175403419
Albite  (*)FeldsparNa(AlSi3O8)126175408803
Almandine  (*)GarnetFe2+3Al2(SiO4)312617542242469,2424722353
Aragonite  (*)AragoniteCa(CO3)126175412424723250
Arsenopyrite  (*)ArsenopyriteFeAsS126175412424729052
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O6126175412424722060
Calcite  (*)CalciteCa(CO3)1261754124247227770
Chalcopyrite  (*)ChalcopyriteCuFeS21261754027198
Clinozoisite  (*)Clinozoisite EpidoteCa2Al3[Si2O7][SiO4]O(OH)126175412424721025
Diopside  (*)PyroxeneCaMgSi2O6126175412424724135
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)126175408173
Fluorapatite  (*)ApatiteCa5(PO4)3F126175412424722740
Goethite  (*)DiasporeFeO(OH)126175407437
Graphite  (*)NoneC126175402812
Grossular  (*)GarnetCa3Al2(SiO4)3126175412424721544
Hematite  (*)CorundumFe2O31261754014640
Kalinite  (*)NoneKAl(SO4)2·11H2O1261754054
Magnetite  (*)SpinelFe2+Fe3+2O412617542242472,24247414899
Microcline  (*)FeldsparK(AlSi3O8)12617542242472,2424744924
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)21261754124247217380
Opal  (*)AmorphousSiO2·nH2O126175412424722994
Pyrite  (*)PyriteFeS212617542242469,24247239462
Quartz  (*)QuartzSiO212617544242469,242472,242474,24247561156
Rutile  (*)RutileTiO2126175405614
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)126175412424722705
Talc  (*)Clay TalcMg3Si4O10(OH)2126175403337
Titanite  (*)TitaniteCaTi(SiO4)O126175404899
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2126175402562
Vesuvianite  (*)Vesuvianite(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10126175412424721395


3 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-00419_206_238770754762±8206_238 zircon   Zircon  9120Bedford, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00419_207_206126112131237±24207_206 zircon   Zircon  9120Bedford, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-00419_207_235903885894±9207_235 zircon   Zircon  9120Bedford, Hillsborough Co., New Hampshire, USA USGS-U-Th-Pb USGS-U-Th-Pb 

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

All age data...

Other copyright data...