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:
Opalite District (McDermitt District), Malheur Co., Oregon, USA


mindat Locality ID: 206049
mindat URL: http://www.mindat.org/loc-206049.html

Tectonic Settings:

Total number of sublocalities beneath "Opalite District (McDermitt District), Malheur Co., Oregon, USA": 10
Total number of bottom-level sublocalities: 10

Number of Child Localities: 10
Child Localities:
Aurora Joint Venture Occurrence (TI; AM; JJ; VJ; LJ; ODC)
Aurora Uranium Prospect
Ben-Bret 1-15 Occurrence
Bretz Mine
Burnell - Larson Occurrence
Carlina 1-3 (Wildcat 9-10; Sage Brush Anny; Golden Sage; High Sage; Payne Creek 1-4)
Lasa; JKL Claims
Opalite Mine
Sunset CCs 2-8; 10-16 Occurrence (Stardust 2-16 Even Numbers Only)
Sunset Mercury Occurrence

Latitude: 42°2'24"N
Longitude: 117°58'8"W
Decimal Degree (lat, lon): 42.04,-117.96888888889
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 Ba C Ca Cl Cu F Fe H Hg K Mg Na O Pb S Si Ti U 

Elements from minerals reported directly at this locality: Cl Hg O 

Structural Groups for minerals in this locality: 
AluniteAmorphousArsenopyriteBaryteCalciteChalcopyriteClayCristobaliteFluoriteGypsum
MarcasiteNonePyriteQuartzRocksaltRutileSmectite-vermiculiteZircon

22 IMA Minerals at location:
Arsenopyrite  (*)Baryte  (*)Calcite  (*)Calomel  (*)Chalcopyrite  (*)
Cinnabar  (*)Coffinite  (*)Cristobalite  (*)Fluorite  (*)Galena  (*)
Gypsum  (*)Jarosite  (*)Marcasite  (*)Montmorillonite  (*)Opal  (*)
Pyrite  (*)Quartz  (*)Rutile  (*)Schuetteite  (*)Siderite  (*)
Terlinguaite  (*)Uraninite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Arsenopyrite  (*)ArsenopyriteFeAsS12613039052
Baryte  (*)BaryteBa(SO4)126130511547
Calcite  (*)CalciteCa(CO3)2261303,26130527770
Calomel  (*)NoneHgCl091
Chalcopyrite  (*)ChalcopyriteCuFeS2126130527198
Cinnabar  (*)NoneHgS2261305,2613062600
Coffinite  (*)ZirconU(SiO4)·nH2O1261303566
Cristobalite  (*)CristobaliteSiO21261303453
Fluorite  (*)FluoriteCaF212613039617
Galena  (*)RocksaltPbS126130524243
Gypsum  (*)GypsumCa(SO4)·2H2O12613036890
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)612613032228
Marcasite  (*)MarcasiteFeS22261303,2613055674
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O12613031508
Opal  (*)AmorphousSiO2·nH2O12613032994
Pyrite  (*)PyriteFeS22261303,26130539462
Quartz  (*)QuartzSiO2126130561156
Rutile  (*)RutileTiO22261303,2613055614
Schuetteite  (*)NoneHg3O2(SO4)00126130921
Siderite  (*)CalciteFe(CO3)12613036417
Terlinguaite  (*)NoneHg2OCl022
Uraninite  (*)FluoriteUO212613032718


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...