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:
Howard District (Ochoco District; Bolivar District), Crook Co., Oregon, USA


mindat Locality ID: 50138
mindat URL: http://www.mindat.org/loc-50138.html

Tectonic Settings:

Total number of sublocalities beneath "Howard District (Ochoco District; Bolivar District), Crook Co., Oregon, USA": 24
Total number of bottom-level sublocalities: 24

Number of Child Localities: 24
Child Localities:
Amity Mine (International Mercury; Homestake Mercury; Johnson Creek; New Amity; Paulsen And Saylor)
Barnes Butte (Prineville Quicksilver)
Blevins Occurrence
Blue Ridge Mine (Number One Mine; Inc.; Cinnabar Mines)
Bryam-Oscar Mine
Champion Mine
Devil's Food Occurrence (Ridge Claim; Westbrook; Endicott)
Gray Prairie Occurrence
Independent Occurrence
Jimmy Ann (Beardssmore; Stanley & Culbertson; Staley; Ochoco Mines Corp.; Ochoco Quicksilver Champion; Barney And Staley)
Johnson Occurrence
Last Chance Occurrence
Little Chance Occurrence
Little Hay Creek Occurrence (Miller Flat; Flag Creek)
M.A.S. No. 1; 2; 3; & 4 Occurrence
Mother Lode (American Almaden; Consolidated Quicksilver; Canyon Creek)
Ochoco Mine (Ophir-Mayflower)
Ontko Occurrence
Orion Mining Company Occurrence (Orion Mining Company Claims; Log Cabin)
Peaslee Creek Occurrence
Round Mountain
Scissors Creek Area Placers
Taylor Ranch (Whiting; Ochoco)
Westerling Occurrence (Wesserling)

Latitude: 44°21'58"N
Longitude: 120°24'25"W
Decimal Degree (lat, lon): 44.366111111111,-120.40694444444
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 C Ca Cu Fe H Hg K Mg O Pb S Sb Si Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllophaneAluniteAmorphousCalciteChalcopyriteMarcasiteNonePyriteQuartzRocksalt
SphaleriteTetrahedrite

13 IMA Minerals at location:
Calcite  (*)Chalcopyrite  (*)Chrysocolla  (*)Cinnabar  (*)Dolomite  (*)
Galena  (*)Jarosite  (*)Marcasite  (*)Opal  (*)Pyrite  (*)
Quartz  (*)Sphalerite  (*)Tetrahedrite-(Zn)  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Calcite  (*)CalciteCa(CO3)9256732,256734,256737,256738,256740,256741,256745,256748,25675227770
Chalcopyrite  (*)ChalcopyriteCuFeS2125674827198
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O12567553531
Cinnabar  (*)NoneHgS17256732,256733,256734,256735,256736,256737,256738,256739,256740,256741,256742,256747,256750,256751,256752,256754,2567552600
Dolomite  (*)NoneCaMg(CO3)212567489895
Galena  (*)RocksaltPbS125674824243
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)612567542228
Marcasite  (*)MarcasiteFeS23256732,256739,2567415674
Opal  (*)AmorphousSiO2·nH2O3256733,256741,2567472994
Pyrite  (*)PyriteFeS28256732,256736,256738,256739,256740,256747,256748,25675439462
Quartz  (*)QuartzSiO28256732,256733,256737,256738,256741,256745,256747,25674861156
Sphalerite  (*)SphaleriteZnS125674821482
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S1312567485317


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...