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:
Hudson, Middlesex Co., Massachusetts, USA


mindat Locality ID: 203335
mindat URL: http://www.mindat.org/loc-203335.html

Tectonic Settings:

Total number of sublocalities beneath "Hudson, Middlesex Co., Massachusetts, USA": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Route 62 Locality (Potash Hill)

Latitude: 42°23'40"N
Longitude: 71°35'36"W
Decimal Degree (lat, lon): 42.394444444444,-71.593333333333

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 Be C Ca Cu Fe H K Mg O S Si Ti U W 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllophaneAmorphousBerylCalciteChalcopyriteClayClinozoisiteCorundumEpidoteFeldspar
FluoriteMalachiteMicaNoneQuartzRutileScheeliteSpinelTitanite

18 IMA Minerals at location:
Beryl  (*)Bornite  (*)Calcite  (*)Chalcopyrite  (*)Chrysocolla  (*)
Dolomite  (*)Epidote  (*)Ilmenite  (*)Magnetite  (*)Malachite  (*)
Microcline  (*)Muscovite  (*)Opal  (*)Quartz  (*)Rutile  (*)
Scheelite  (*)Titanite  (*)Uraninite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Beryl  (*)BerylBe3Al2Si6O1812196114286
Bornite  (*)NoneCu5FeS412196115516
Calcite  (*)CalciteCa(CO3)121961127770
Chalcopyrite  (*)ChalcopyriteCuFeS2121961127198
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O12196113531
Dolomite  (*)NoneCaMg(CO3)212196119895
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)12196118173
Ilmenite  (*)CorundumFe2+Ti4+O312196115433
Magnetite  (*)SpinelFe2+Fe3+2O4121961114899
Malachite  (*)MalachiteCu2(CO3)(OH)2121961112537
Microcline  (*)FeldsparK(AlSi3O8)12196114924
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2121961117380
Opal  (*)AmorphousSiO2·nH2O12196112994
Quartz  (*)QuartzSiO2121961161156
Rutile  (*)RutileTiO212196115614
Scheelite  (*)ScheeliteCa(WO4)12196114894
Titanite  (*)TitaniteCaTi(SiO4)O12196114899
Uraninite  (*)FluoriteUO212196112718



No ages have been assigned to this locality yet.

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