Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Cracker Creek Mining District, Oregon, USAi
Regional Level Types
Cracker Creek Mining DistrictMining District
OregonState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosSearchMineralogy
02220220017272080019923.jpg
View of the Sumpter gold mining area, ca. 1910.

Golconda Mine, Baker County, Oregon, USA
07360090017272266489463.jpg
View of the Sumpter placer gold mining area, ca. 1950.

Deer Creek placer, Sumpter, Baker County, Oregon, USA
05695980017272014897982.jpg
View of the Sumpter gold mining area, ca. 1910.

Golconda Mine, Baker County, Oregon, USA
00926500017272014917333.jpg
View of the Sumpter placer gold mining area, ca. 1950.

Deer Creek placer, Sumpter, Baker County, Oregon, USA
05695980017272014897982.jpg
View of the Sumpter gold mining area, ca. 1910.

Golconda Mine, Baker County, Oregon, USA
Latitude & Longitude (WGS84):
44° North , 117° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~42km
Mindat Locality ID:
49784
Long-form identifier:
mindat:1:2:49784:7
GUID (UUID V4):
0
Other/historical names associated with this locality:
Bourne Mining District; McCully Mining District; Sumpter Mining District


A former Au-Ag mining district. It encompasses the area drained by Cracker Creek and McCully Fork, headwaters of the Powder River N of Sumpter.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

21 valid minerals.

Rock Types Recorded


Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Anthophyllite
Formula: ◻Mg2Mg5(Si8O22)(OH)2
Arsenopyrite
Formula: FeAsS
Localities: Reported from at least 16 localities in this region.
Calcite
Formula: CaCO3
Localities: Reported from at least 7 localities in this region.
Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 19 localities in this region.
'Chlorite Group'
Chromite
Formula: Fe2+Cr3+2O4
Cinnabar
Formula: HgS
Cobaltite
Formula: CoAsS
References:
Galena
Formula: PbS
Glaucodot
Formula: (Co0.50Fe0.50)AsS
References:
Hematite
Formula: Fe2O3
Marcasite
Formula: FeS2
Localities: Reported from at least 17 localities in this region.
Molybdenite
Formula: MoS2
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
Native Gold
Formula: Au
Pyrargyrite
Formula: Ag3SbS3
Pyrite
Formula: FeS2
Localities: Reported from at least 41 localities in this region.
Quartz
Formula: SiO2
Localities: Reported from at least 40 localities in this region.
Roscoelite
Formula: KV3+2(AlSi3O10)(OH)2
Sphalerite
Formula: ZnS
Stibnite
Formula: Sb2S3
Localities: Reported from at least 16 localities in this region.
Talc
Formula: Mg3Si4O10(OH)2
'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S
Localities: Reported from at least 19 localities in this region.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Native Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Sphalerite2.CB.05aZnS
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Cinnabar2.CD.15aHgS
Stibnite2.DB.05Sb2S3
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Marcasite2.EB.10aFeS2
Glaucodot2.EB.10c(Co0.50Fe0.50)AsS
Arsenopyrite2.EB.20FeAsS
Cobaltite2.EB.25CoAsS
Pyrargyrite2.GA.05Ag3SbS3
'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 9 - Silicates
Anthophyllite9.DD.05◻Mg2Mg5(Si8O22)(OH)2
Talc9.EC.05Mg3Si4O10(OH)2
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Roscoelite9.EC.15KV3+2(AlSi3O10)(OH)2
Muscovite
var. Sericite
9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
H Anthophyllite◻Mg2Mg5(Si8O22)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H RoscoeliteKV23+(AlSi3O10)(OH)2
H TalcMg3Si4O10(OH)2
H Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CCarbon
C CalciteCaCO3
OOxygen
O Anthophyllite◻Mg2Mg5(Si8O22)(OH)2
O CalciteCaCO3
O ChromiteFe2+Cr23+O4
O HematiteFe2O3
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O RoscoeliteKV23+(AlSi3O10)(OH)2
O TalcMg3Si4O10(OH)2
O Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
MgMagnesium
Mg Anthophyllite◻Mg2Mg5(Si8O22)(OH)2
Mg TalcMg3Si4O10(OH)2
AlAluminium
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al RoscoeliteKV23+(AlSi3O10)(OH)2
Al Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Si Anthophyllite◻Mg2Mg5(Si8O22)(OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si RoscoeliteKV23+(AlSi3O10)(OH)2
Si TalcMg3Si4O10(OH)2
Si Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SSulfur
S ArsenopyriteFeAsS
S ChalcopyriteCuFeS2
S CinnabarHgS
S CobaltiteCoAsS
S GalenaPbS
S Glaucodot(Co0.50Fe0.50)AsS
S MarcasiteFeS2
S MolybdeniteMoS2
S PyrargyriteAg3SbS3
S PyriteFeS2
S SphaleriteZnS
S StibniteSb2S3
S Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
K RoscoeliteKV23+(AlSi3O10)(OH)2
K Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
VVanadium
V RoscoeliteKV23+(AlSi3O10)(OH)2
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe ArsenopyriteFeAsS
Fe ChalcopyriteCuFeS2
Fe ChromiteFe2+Cr23+O4
Fe Glaucodot(Co0.50Fe0.50)AsS
Fe HematiteFe2O3
Fe MarcasiteFeS2
Fe PyriteFeS2
CoCobalt
Co CobaltiteCoAsS
Co Glaucodot(Co0.50Fe0.50)AsS
CuCopper
Cu ChalcopyriteCuFeS2
Cu Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
As CobaltiteCoAsS
As Glaucodot(Co0.50Fe0.50)AsS
MoMolybdenum
Mo MolybdeniteMoS2
AgSilver
Ag PyrargyriteAg3SbS3
SbAntimony
Sb PyrargyriteAg3SbS3
Sb StibniteSb2S3
Sb Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
AuGold
Au Native GoldAu
HgMercury
Hg CinnabarHgS
PbLead
Pb GalenaPbS

Localities in this Region

Other Regions, Features and Areas that Intersect


This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 3, 2026 14:27:32 Page updated: July 24, 2026 09:25:18
Go to top of page