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:
South Acworth, Sullivan Co., New Hampshire, USA

Oldest recorded age at locality: 342
Youngest recorded age at locality: 265.9

mindat Locality ID: 295677
mindat URL: http://www.mindat.org/loc-295677.html

Tectonic Settings:

Total number of sublocalities beneath "South Acworth, Sullivan Co., New Hampshire, USA": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Beryl Mountain Quarry (Beryl Mountain Pegmatites; Beryl Hill; William's Ledge)

Latitude: 43°10'50"N
Longitude: 72°17'39"W
Decimal Degree (lat, lon): 43.180555555556,-72.294166666667
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 B Be C Ca F Fe H K Na O P Pb S Si U Zr 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmorphousApatiteAutuniteBerylClayCorundumDiasporeFeldsparFluoriteGarnet
Meta-autuniteMicaNoneNot in a structural groupPyriteQuartzSchoepiteTourmalineZircon

23 IMA Minerals at location:
Albite  (*)Almandine  (*)Autunite  (*)Bertrandite  (*)Beryl  (*)
Fluorapatite  (*)Goethite  (*)Hematite  (*)Meta-autunite  (*)Metaschoepite  (*)
Microcline  (*)Muscovite  (*)Opal  (*)Paraschoepite  (*)Pyrite  (*)
Quartz  (*)Rutherfordine  (*)Schoepite  (*)Schorl  (*)Uraninite  (*)
Uranophane-α  (*)Vandendriesscheite  (*)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)342265.912427768803
Almandine  (*)GarnetFe2+3Al2(SiO4)3342265.912427762353
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O342265.912427761272
Bertrandite  (*)Not in a structural groupBe4Si2O7(OH)2342265.91242776606
Beryl  (*)BerylBe3Al2Si6O18342265.912427764286
Fluorapatite  (*)ApatiteCa5(PO4)3F342265.912427762740
Goethite  (*)DiasporeFeO(OH)342265.912427767437
Hematite  (*)CorundumFe2O3342265.9124277614640
Meta-autunite  (*)Meta-autuniteCa(UO2)2(PO4)2·6H2O342265.91242776388
Metaschoepite  (*)Schoepite(UO2)8O2(OH)12·10H2O342265.9124277617
Microcline  (*)FeldsparK(AlSi3O8)342265.912427764924
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2338265.9124277617380
Opal  (*)AmorphousSiO2·nH2O342265.912427762994
Paraschoepite  (*)NoneUO3·(2-x)H2O342265.912427764
Pyrite  (*)PyriteFeS2342265.9124277639462
Quartz  (*)QuartzSiO2342265.9124277661156
Rutherfordine  (*)None(UO2)(CO3)342265.9124277658
Schoepite  (*)Schoepite(UO2)4O(OH)6(H2O)6342265.9124277694
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)342265.912427762705
Uraninite  (*)FluoriteUO2342265.912427762718
Uranophane-α  (*)NoneCa(UO2)2(SiO3OH)2·5H2O342265.91242776890
Vandendriesscheite  (*)NonePb1.6(UO2)10O6(OH)11·11H2O342265.9124277652
Zircon  (*)ZirconZr(SiO4)34234012427765251


4 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
Alexandra-0189341.82340.66341.24 ± 0.58U-PbAge of pegmatitezircon10Dw500a  Zircon  6000Beryl Mountain Quarry (Beryl Mountain Pegmatites; Beryl Hill; William's Ledge), South Acworth, Sullivan Co., New Hampshire, USABeryl Mountain pegmatiteBradley et al. (2016)10.3749/canmin.1600035CM54_945 
Alexandra-0190272.1265.9269 ± 3.1Ar-ArAge of pegmatitemuscovite10ADw500a  Muscovite  6000Beryl Mountain Quarry (Beryl Mountain Pegmatites; Beryl Hill; William's Ledge), South Acworth, Sullivan Co., New Hampshire, USABeryl Mountain pegmatiteBradley et al. (2016)10.3749/canmin.1600035CM54_945 
Alexandra-0410338318328 ± 10K-ArAge of pegmatitemuscovite   Muscovite  6000Beryl Mountain Quarry (Beryl Mountain Pegmatites; Beryl Hill; William's Ledge), South Acworth, Sullivan Co., New Hampshire, USABeryl MountainZartman et al. (1970)10.1130/0016-7606(1970)81[3359:APDOKR]2.0.CO;2GSAB81_3359 
Bradley_2012_068342340341±1U/Pb zircon   Zircon  6000Beryl Mountain Quarry (Beryl Mountain Pegmatites; Beryl Hill; William's Ledge), South Acworth, Sullivan Co., New Hampshire, USABeryl MountainMcCauley and Bradley (2014)10.3749/canmin.52.2.183CM52_183 

All locality data graciously provided by mindat.org

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