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Mammoth Mine, Bourne (Cracker City), Cracker Creek District (Sumpter District; Bourne District; McCully District), Blue Mts, Baker Co., Oregon, USA

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Latitude & Longitude (WGS84): 44° 49' 18'' North , 118° 15' 31'' West
Latitude & Longitude (decimal): 44.82177,-118.25881
GeoHash:G#: 9rgyuzw9d
Locality type:Mine
Köppen climate type:Dsb : Warm, dry-summer continental climate


A former Au mine located on the Divide between McCully Fork and Silver Creek, a few hundred feet from the Belle of Baker Mine.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

Arsenopyrite
Formula: FeAsS
Reference: Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; Marshall T. Huntting, 1956
Chalcopyrite
Formula: CuFeS2
Reference: Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; Marshall T. Huntting, 1956
Marcasite
Formula: FeS2
Reference: Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; Marshall T. Huntting, 1956
Pyrite
Formula: FeS2
Reference: Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; Marshall T. Huntting, 1956
Quartz
Formula: SiO2
Reference: Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; Marshall T. Huntting, 1956
Roscoelite
Formula: K(V3+,Al)2(AlSi3O10)(OH)2
Reference: Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
Stibnite
Formula: Sb2S3
Reference: Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; Marshall T. Huntting, 1956
Tetrahedrite
Formula: Cu6[Cu4(Fe,Zn)2]Sb4S13
Reference: Inventory of Washington Minerals, Part II, Metalic Minerals, Vol. 1; Marshall T. Huntting, 1956

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Arsenopyrite'2.EB.20FeAsS
'Chalcopyrite'2.CB.10aCuFeS2
'Marcasite'2.EB.10aFeS2
'Pyrite'2.EB.05aFeS2
'Stibnite'2.DB.05Sb2S3
'Tetrahedrite'2.GB.05Cu6[Cu4(Fe,Zn)2]Sb4S13
Group 4 - Oxides and Hydroxides
'Quartz'4.DA.05SiO2
Group 9 - Silicates
'Roscoelite'9.EC.15K(V3+,Al)2(AlSi3O10)(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 2:3
Stibnite2.11.2.1Sb2S3
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
3 <ø < 4
Tetrahedrite3.3.6.1Cu6[Cu4(Fe,Zn)2]Sb4S13
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Roscoelite71.2.2a.4K(V3+,Al)2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2

List of minerals for each chemical element

HHydrogen
H RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
OOxygen
O QuartzSiO2
O RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
AlAluminium
Al RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
SiSilicon
Si QuartzSiO2
Si RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
SSulfur
S ArsenopyriteFeAsS
S ChalcopyriteCuFeS2
S MarcasiteFeS2
S PyriteFeS2
S StibniteSb2S3
S TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
KPotassium
K RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
VVanadium
V RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
FeIron
Fe ArsenopyriteFeAsS
Fe ChalcopyriteCuFeS2
Fe MarcasiteFeS2
Fe PyriteFeS2
Fe TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
CuCopper
Cu ChalcopyriteCuFeS2
Cu TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
ZnZinc
Zn TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
AsArsenic
As ArsenopyriteFeAsS
SbAntimony
Sb StibniteSb2S3
Sb TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Mesozoic - Paleozoic
66 - 541 Ma



ID: 1462458
Baker Terrane; Elkhorn Ridge Argillite

Age: Phanerozoic (66 - 541 Ma)

Description: Elkhorn Ridge Argillite; sedimentary rocks; fine grained sediments; argillite; mixed

Lithology: Major:: {siliceous argillite, red, dark, light gray, pale brown; facies: greenschist}; Major:: {argillite, black, dark; high carbon content inclusions; facies: greenschist} Minor:: {chert, red, dark, light gray, pale brown; facies: greenschist}; Minor:: {felsic tuff, grayish green, pale yellow; tiny quartz feldspar phenocrysts; facies: greenschist}; Minor:: {sandstone, facies: greenschist}

Reference: R.L. Smith, W.P. Roe (compilers). Oregon Geologic Data Compilation, release 6. State of Oregon Department of Geology and Mineral Industries. [20]

Jurassic - Triassic
145 - 251.902 Ma



ID: 3192126
Mesozoic sedimentary and volcanic rocks

Age: Mesozoic (145 - 251.902 Ma)

Comments: Blue Mountains

Lithology: Conglomerate,limestone,sandstone,shale,chert

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Triassic - Permian
201.3 - 298.9 Ma



ID: 2853114
Sedimentary rocks, partly metamorphosed

Age: Phanerozoic (201.3 - 298.9 Ma)

Stratigraphic Name: Elkhorn Ridge Argillite; Coyote Butte Formation

Description: Poorly bedded argillite, chert, phyllite, phyllitic quartzite, calc-phyllite, impure limestone, and marble. In places rocks are strongly foliated. Sparse fossils (Fusilina, corals, and crinoids) indicate that the unit includes rocks of Leonardian, Ochoan, and Late Triassic age (OR084). Includes Elkhorn Ridge Argillite (OR035), Mesozoic and Paleozoic sedimentary rocks of Brown and Thayer (OR008), and the Permian Coyote Butte Formation (OR085). In Baker County includes "sedimentary and volcanic rocks" (MzPza) of Brooks and others (OR039) and metamorphosed sedimentary and minor volcaniclastic rocks containing mineral assemblages indicative of quartz-albite-muscovite-chlorite subfacies and quartz-albite-epidote-biotite subfacies of the greenschist facies. In Jefferson and Wasco Counties north of Prineville, includes "phyllite and sedimentary rocks " of Swanson (OR031). Includes part of the Burnt River Schist (OR035; OR081) and volcaniclastic facies of several metavolcanic units of Permian and Late Triassic age. Not on State map (OR001) in area of La Grande 100K quadrangle, butmapped in OR291 as Elkhorn Ridge Argillite (Triassic Permian, Pennsylvannian, and Devonian?)

Comments: Burnt River Schist encloses Nelson marble (unit TRPzsn), which was assigned a Late to Middle Triassic age based on conodonts (OR191). The Burnt River Schist is intruded by a 230 Ma (Middle Triassic) diorite (OR190).

Lithology: Major:{argillite,chert,phyllite}, Minor:{limestone,quartzite,marble}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Brooks, Howard C., Len Ramp (1968), Gold and Silver in Oregon, Oregon Department of Geology and Mineral Industries Bulletin 61.


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