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:
Democrat Mine, Sunnyside, Mt Wills Mining District, Omeo, East Gippsland Shire, Victoria, Australia

Oldest recorded age at locality: 424
Youngest recorded age at locality: 416

mindat Locality ID: 15403
mindat URL: http://www.mindat.org/loc-15403.html

Tectonic Settings:

Total number of sublocalities beneath "Democrat Mine, Sunnyside, Mt Wills Mining District, Omeo, East Gippsland Shire, Victoria, Australia": 0
Total number of bottom-level sublocalities: 0

Latitude: 36°50'19"S
Longitude: 147°29'15"E
Decimal Degree (lat, lon): -36.838611111111,147.4875

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: As Au Fe O S Sb Si 

Elements from minerals reported directly at this locality: As Au Fe O S Sb Si 

Structural Groups for minerals in this locality: 
ArsenopyriteCopperNonePyriteQuartzStibnite

5 IMA Minerals at location:
Arsenopyrite  (*)Gold  (*)Pyrite  (*)Quartz  (*)Stibnite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Arsenopyrite  (*)ArsenopyriteFeAsS42441609052
Gold  (*)CopperAu424416030554
Pyrite  (*)PyriteFeS2424416039462
Quartz  (*)QuartzSiO2424416061156
Stibnite  (*)StibniteSb2S342441603418



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
PRSV127_55-001424416420 ± 4Th/U/PbAge of pegmatitemonazite  Yes  269853Knocker Dyke (South Blue Jacket), Dorchap Dyke Swarm, Glen Wills, Mt Wills Mining District, Omeo, East Gippsland Shire, Victoria, AustraliaKnocker pegmatiteEagle et al. (2015)10.1071/RS15018PRSV127_55age of Knocker pegmatite, aslo stated that the age is proxy for Mount Willis which is undated


SampleSource LocalityReference URL


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