Emma Mine (Barbara; Normandic; Brooklyn; MS 18498; Sirius; MS 12931; Cynthia; Orion; MS 12953a; Modern Mines), Lone Cone Mining District (Dunton Mining District), Dolores County, Colorado, USAi
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Latitude & Longitude (WGS84):
37° 46' 2'' North , 108° 5' 52'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Rico | 255 (2017) | 10.2km |
| Ophir | 169 (2017) | 25.3km |
| Mountain Village | 1,395 (2017) | 28.0km |
| Telluride | 2,399 (2018) | 31.4km |
| Silverton | 637 (2011) | 38.4km |
REF:Deposit:: BUSH, A.L., AND BROMFIELD, C.S., 1966, GEOLOGIC MAP OF THE DOLORES PEAK QUADRANGLE, DOLORES AND SAN MIGUEL COUNTIES, COLORADO: USGS MAP GQ-536.
Deposit:: BASTIN, E.S., 1922, SILVER ENRICHMENT IN THE SAN JUAN MOUNTAINS, COLORADO: USGS BULL. 735
Deposit:: NEUBERT, J.T., 1992, MINERAL APPRASIAL OF SAN JUAN NATIONAL
Deposit:: FOREST, CO: U.S. BUREAU OF MINES MINERAL LAND ASSESSMENT
Deposit:: OPEN-FILE REPORT 2-92 (SAMPLES 29-35)
Deposit:: CANADIAN MINES HANDBOOK, 1988, P. 381
Modern Mines Mill Site; Modern Gold Mill Site; Queenmary; May Flower; MS 18499; Patented Claims: Great Bear; MS 12930; Little Emma; MS 12951a; Patricia; Lio
Commodities (Major) - Silver, Gold, Lead; (Minor) - Coal; (Trace) - Zinc, Copper
Development Status: Past Producer
Host Rock Unit: Dakota Sandstone, Lamprophyre
Structure: San Juan Uplift, Paradox Basin, Rico Dome, Dunton Syncline, Emma Fault
Host Rock: Sandstone, Shale
Tectonic Structure: Central Cordillera (Southern Rocky Mtns)
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
14 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Acanthite Formula: Ag2S |
| ⓘ Alunogen Formula: Al2(SO4)3 · 17H2O |
| ⓘ Baryte Formula: BaSO4 |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Epsomite Formula: MgSO4 · 7H2O |
| ⓘ Galena Formula: PbS |
| ⓘ Gypsum Formula: CaSO4 · 2H2O |
| ⓘ Halotrichite Formula: FeAl2(SO4)4 · 22H2O |
| ⓘ Melanterite Formula: Fe2+(H2O)6SO4 · H2O |
| ⓘ Polybasite Formula: [Ag6Sb2S7][Ag9CuS4] |
| ⓘ Pyrargyrite Formula: Ag3SbS3 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Acanthite | 2.BA.35 | Ag2S |
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Pyrargyrite | 2.GA.05 | Ag3SbS3 |
| ⓘ | Polybasite | 2.GB.15 | [Ag6Sb2S7][Ag9CuS4] |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| ⓘ | Melanterite | 7.CB.35 | Fe2+(H2O)6SO4 · H2O |
| ⓘ | Epsomite | 7.CB.40 | MgSO4 · 7H2O |
| ⓘ | Alunogen | 7.CB.45 | Al2(SO4)3 · 17H2O |
| ⓘ | Halotrichite | 7.CB.85 | FeAl2(SO4)4 · 22H2O |
| ⓘ | Gypsum | 7.CD.40 | CaSO4 · 2H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Alunogen | Al2(SO4)3 · 17H2O |
| H | ⓘ Epsomite | MgSO4 · 7H2O |
| H | ⓘ Gypsum | CaSO4 · 2H2O |
| H | ⓘ Halotrichite | FeAl2(SO4)4 · 22H2O |
| H | ⓘ Melanterite | Fe2+(H2O)6SO4 · H2O |
| O | Oxygen | |
| O | ⓘ Alunogen | Al2(SO4)3 · 17H2O |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Epsomite | MgSO4 · 7H2O |
| O | ⓘ Gypsum | CaSO4 · 2H2O |
| O | ⓘ Halotrichite | FeAl2(SO4)4 · 22H2O |
| O | ⓘ Melanterite | Fe2+(H2O)6SO4 · H2O |
| O | ⓘ Quartz | SiO2 |
| Mg | Magnesium | |
| Mg | ⓘ Epsomite | MgSO4 · 7H2O |
| Al | Aluminium | |
| Al | ⓘ Alunogen | Al2(SO4)3 · 17H2O |
| Al | ⓘ Halotrichite | FeAl2(SO4)4 · 22H2O |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Acanthite | Ag2S |
| S | ⓘ Alunogen | Al2(SO4)3 · 17H2O |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Epsomite | MgSO4 · 7H2O |
| S | ⓘ Galena | PbS |
| S | ⓘ Gypsum | CaSO4 · 2H2O |
| S | ⓘ Halotrichite | FeAl2(SO4)4 · 22H2O |
| S | ⓘ Melanterite | Fe2+(H2O)6SO4 · H2O |
| S | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| S | ⓘ Pyrargyrite | Ag3SbS3 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| Ca | Calcium | |
| Ca | ⓘ Gypsum | CaSO4 · 2H2O |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Halotrichite | FeAl2(SO4)4 · 22H2O |
| Fe | ⓘ Melanterite | Fe2+(H2O)6SO4 · H2O |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Ag | Silver | |
| Ag | ⓘ Acanthite | Ag2S |
| Ag | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Ag | ⓘ Pyrargyrite | Ag3SbS3 |
| Sb | Antimony | |
| Sb | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Sb | ⓘ Pyrargyrite | Ag3SbS3 |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Great Plains DomainDomain
- Southern Rocky MountainsOrogenic Belt
USA
- San Juan MountainsMountain Range
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Emma Mine, Lone Cone Mining District, Dolores County, Colorado, USA