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Ransom Mine, Eureka, Eureka District, San Juan Co., Colorado, USA

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Latitude & Longitude (WGS84): 37° 53' North , 107° 34' West
Latitude & Longitude (decimal): 37.88334,-107.56667
GeoHash:G#: 9wex822q7
Locality type:Mine
Köppen climate type:Dfc : Subarctic climate


Located on the animas River at the mouth of Eureka Gulch, about 7 miles northest of Silverton. It consists of three levels

Owned by the Dixie-Lynn Corp.

Ref.: Rocks & Min.: 63: 286; 71:167-169

Regions containing this locality

Rocky Mountains, North America

Mountain Range - 2,037 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

Calcite
Formula: CaCO3
Reference: R&M 71:167-168 (1996)
Chalcopyrite
Formula: CuFeS2
Reference: Rocks & Min.: 63: 286.
Fluorite
Formula: CaF2
Habit: complex cubo-octahedra
Colour: pale-green
Reference: Rocks & Min.: 63: 286; 71:167-168 (1996); 2008 New Mexico Mineral Symposium abstracts
Galena
Formula: PbS
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia; R&M 71:167-168 (1996)
Gold
Formula: Au
Reference: R&M 71:167-168 (1996)
Pyrite
Formula: FeS2
Reference: R&M 71:167-168 (1996)
Quartz
Formula: SiO2
Reference: Rocks & Min.: 63: 286; 71:167-168 (1996); 2008 New Mexico Mineral Symposium abstracts
Sphalerite
Formula: ZnS
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia; R&M 71:167-168 (1996)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Gold'1.AA.05Au
Group 2 - Sulphides and Sulfosalts
'Chalcopyrite'2.CB.10aCuFeS2
'Galena'2.CD.10PbS
'Pyrite'2.EB.05aFeS2
'Sphalerite'2.CB.05aZnS
Group 3 - Halides
'Fluorite'3.AB.25CaF2
Group 4 - Oxides and Hydroxides
'Quartz'4.DA.05SiO2
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
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

CCarbon
C CalciteCaCO3
OOxygen
O CalciteCaCO3
O QuartzSiO2
FFluorine
F FluoriteCaF2
SiSilicon
Si QuartzSiO2
SSulfur
S ChalcopyriteCuFeS2
S GalenaPbS
S PyriteFeS2
S SphaleriteZnS
CaCalcium
Ca CalciteCaCO3
Ca FluoriteCaF2
FeIron
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
AuGold
Au GoldAu
PbLead
Pb GalenaPbS

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

Late Pleistocene - Middle Pleistocene
0.0117 - 0.781 Ma



ID: 3021541
Gravels and alluviums

Age: Pleistocene (0.0117 - 0.781 Ma)

Description: Includes Broadway and Louviers Alluviums

Lithology: Major:{unconsolidated gravel}

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]

Miocene - Eocene
5.333 - 56 Ma



ID: 3190650
Cenozoic volcanic rocks

Age: Cenozoic (5.333 - 56 Ma)

Stratigraphic Name: San Juan Mountains

Comments: Southern Rocky Mountains

Lithology: Intermediate-felsic volcanic rocks

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]

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


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