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:
Mispickel Creek, Westport, Buller District, West Coast Region, New Zealand

Oldest recorded age at locality: 503
Youngest recorded age at locality: 50

mindat Locality ID: 15355
mindat URL: http://www.mindat.org/loc-15355.html

Tectonic Settings:

Total number of sublocalities beneath "Mispickel Creek, Westport, Buller District, West Coast Region, New Zealand": 0
Total number of bottom-level sublocalities: 0

Latitude: 41°50'41"S
Longitude: 171°43'38"E
Decimal Degree (lat, lon): -41.844722222222,171.72722222222

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: Ba O S 

Elements from minerals reported directly at this locality: Ba O S 

Structural Groups for minerals in this locality: 
BaryteNone

1 IMA Minerals at location:
Baryte  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Baryte  (*)BaryteBa(SO4)100.5100.3011547



11 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
Giersdorf_00000767102.5102.5102.5K-Ar muscoviteRQD-1  MuscoviteMuscovite 15355Mispickel Creek, Westport, Buller District, West Coast Region, New ZealandWestportSpell et al. (2000)10.1029/1999TC900046T19_433Age acquired through 98% of the gas extraction
Giersdorf_00000768102.5102.1102.3±0.2K-Ar highmuscoviteRQD-1  MuscoviteMuscovite 15355Mispickel Creek, Westport, Buller District, West Coast Region, New ZealandWestportSpell et al. (2000)10.1029/1999TC900046T19_433Total Gas Age, taken as the best result for the sample
Giersdorf_00000769818181K-Ar lowbiotiteRQD-1    15355Mispickel Creek, Westport, Buller District, West Coast Region, New ZealandWestportSpell et al. (2000)10.1029/1999TC900046T19_433Initial age acquired during the gas release process, regarded as inconsistent
Giersdorf_00000770100100100K-Ar biotiteRQD-1    15355Mispickel Creek, Westport, Buller District, West Coast Region, New ZealandWestportSpell et al. (2000)10.1029/1999TC900046T19_433Age summarization acquired during the remainder of the gas release process
Giersdorf_00000771100.399.399.8±0.5K-Ar biotiteRQD-1    15355Mispickel Creek, Westport, Buller District, West Coast Region, New ZealandWestportSpell et al. (2000)10.1029/1999TC900046T19_433Total gas age
Giersdorf_00000772100.5100.3100.4±0.1K-Ar highbiotiteRQD-1    15355Mispickel Creek, Westport, Buller District, West Coast Region, New ZealandWestportSpell et al. (2000)10.1029/1999TC900046T19_433Plateau segment of the age plot used as the best age for the sample
Giersdorf_00000773503138503-138K-Ar loworthoclaseRQD-1  OrthoclaseOrthoclase 15355Mispickel Creek, Westport, Buller District, West Coast Region, New ZealandWestportSpell et al. (2000)10.1029/1999TC900046T19_433Initial age acquired during the gas release process, regarded as inconsistent
Giersdorf_00000774905090-50K-Ar loworthoclaseRQD-1  OrthoclaseOrthoclase 15355Mispickel Creek, Westport, Buller District, West Coast Region, New ZealandWestportSpell et al. (2000)10.1029/1999TC900046T19_433Apparent age range from the sample throughout the degassing process
Giersdorf_00000775979797K-Ar orthoclaseRQD-1  OrthoclaseOrthoclase 15355Mispickel Creek, Westport, Buller District, West Coast Region, New ZealandWestportSpell et al. (2000)10.1029/1999TC900046T19_433Age to which most of the remaining ages rose to during the testing process
Giersdorf_00000776979097-90K-Ar highorthoclaseRQD-1  OrthoclaseOrthoclase 15355Mispickel Creek, Westport, Buller District, West Coast Region, New ZealandWestportSpell et al. (2000)10.1029/1999TC900046T19_43390% of the age tests yielded ages within this range for the sample
Giersdorf_00000777939393K-Ar orthoclaseRQD-1  OrthoclaseOrthoclase 15355Mispickel Creek, Westport, Buller District, West Coast Region, New ZealandWestportSpell et al. (2000)10.1029/1999TC900046T19_433Total gas age


SampleSource LocalityReference URL


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