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:
Alton, Belknap Co., New Hampshire, USA

Oldest recorded age at locality: 156
Youngest recorded age at locality: 156

mindat Locality ID: 9081
mindat URL: http://www.mindat.org/loc-9081.html

Tectonic Settings:

Total number of sublocalities beneath "Alton, Belknap Co., New Hampshire, USA": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Avery Hill
Pine Mountain

Latitude: 43°28'46"N
Longitude: 71°16'49"W
Decimal Degree (lat, lon): 43.479444444444,-71.280277777778

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 Fe H K O Pb S Si 

Elements from minerals reported directly at this locality: As Fe Pb S 

Structural Groups for minerals in this locality: 
ArsenopyriteClayMicaNoneNot in a structural groupQuartzRocksalt

5 IMA Minerals at location:
Arsenopyrite  (*)Galena  (*)Muscovite  (*)Quartz  (*)Sillimanite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Arsenopyrite  (*)ArsenopyriteFeAsS15615609052
Galena  (*)RocksaltPbS156156024243
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)21561562241768,24176917380
Quartz  (*)QuartzSiO21561562241768,24176961156
Sillimanite  (*)Not in a structural groupAl2SiO515615612417681516



1 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
AREPS5_257-00018156156156        9082Pine Mountain, Alton, Belknap Co., New Hampshire, USAPine MountainZartman (1977)10.1146/annurev.ea.05.050177.001353AREPS5_257 


SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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