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:
Otro Valley, Alagna Valsesia, Sesia Valley, Vercelli Province, Piedmont, Italy


mindat Locality ID: 278433
mindat URL: http://www.mindat.org/loc-278433.html

Tectonic Settings:

Total number of sublocalities beneath "Otro Valley, Alagna Valsesia, Sesia Valley, Vercelli Province, Piedmont, Italy": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Feglierec Mine

Latitude: 45°50'46"N
Longitude: 7°55'35"E
Decimal Degree (lat, lon): 45.846111111111,7.9263888888889

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 C Ca H Mg Mn Na O Si 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
ArdenniteBrauniteCalciteEpidoteFeldsparGarnetNoneOlivineQuartzRhodonite

11 IMA Minerals at location:
Albite  (*)Ardennite-(As)  (*)Braunite  (*)Calcite  (*)Piemontite  (*)
Pyroxmangite  (*)Quartz  (*)Rhodochrosite  (*)Rhodonite  (*)Spessartine  (*)
Tephroite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Albite  (*)FeldsparNa(AlSi3O8)1712228803
Ardennite-(As)  (*)ArdenniteMn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)617122234
Braunite  (*)BrauniteMn2+Mn3+6O8(SiO4)171222483
Calcite  (*)CalciteCa(CO3)17122227770
Piemontite  (*)EpidoteCa2(Al2Mn3+)[Si2O7][SiO4]O(OH)171222260
Pyroxmangite  (*)NoneMn2+SiO3171222147
Quartz  (*)QuartzSiO217122261156
Rhodochrosite  (*)CalciteMn(CO3)1712221711
Rhodonite  (*)RhodoniteCaMn3Mn(Si5O15)171222969
Spessartine  (*)GarnetMn2+3Al2(SiO4)31712221214
Tephroite  (*)OlivineMn2+2(SiO4)171222240



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

All age data...

Other copyright data...