Jumbo mine (Horn mine), Delamar Mining District, Lincoln County, Nevada, USAi
| Regional Level Types | |
|---|---|
| Jumbo mine (Horn mine) | Mine |
| Delamar Mining District | Mining District |
| Lincoln County | County |
| Nevada | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° 27' 32'' North , 114° 45' 47'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Structure: Abundant Normal Faults Postmineral Fractures
Deposit: Vein parallels the april fool vein. Stopes and shafts explore the n20e, 70 n W quartz vein in the quartzites. The vein consists of quartz-cemented quartzite breccia. The footwall of the vein forms a bold resistant outcrop traceable for 1000 to 1500 ft. The shear (sic) rock face is silicified and iron stained and shows quartz veins and quartz-cemented breccia zones which contain angular fragments of quartzite. The mined portion of the breccia zone has a rubbly or bouldery appearance. Breccia zone appears to be truncated at N end by a fault running up delamar canyon. Dump rock consists mainly of quartzite and quartz vein material, but some siltstone is also present. White comb and prismatic quartz encrust quartzite and micaceous green siltstone fragments. The breccia shows open (euhedral) quartz-filled vugs between fragments. Some vugs are filled with clay and iron oxides. Some vein material contains minor pyrite, chalcopyrite, copper oxides, tetrahedrite ?, white barite (rocks very dense) and gossany portions.
Development: No activity at time of examination in 1983.
Geology: Ore is in cherty quartz vein 6 inches wide and narrow quartz stringers. Ore shoot was 90 feet long in the tunnel and then pitches north. The northern part of the vein terminated against a group of fractures containing east west dikes. A second ore vein has bearing N 22 e, 63 w. Horn silver was found on fracture surfaces.
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Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
8 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
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Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Baryte Formula: BaSO4 |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Chlorargyrite Formula: AgCl |
| ⓘ Galena Formula: PbS |
| ⓘ 'Limonite' References: |
| ⓘ Native Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 References: |
| ⓘ Sphalerite Formula: ZnS |
| ⓘ 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S |
| ⓘ 'Wad' References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
| Group 3 - Halides | |||
| ⓘ | Chlorargyrite | 3.AA.15 | AgCl |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Wad' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Cl | Chlorine | |
| Cl | ⓘ Chlorargyrite | AgCl |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Ag | Silver | |
| Ag | ⓘ Chlorargyrite | AgCl |
| Sb | Antimony | |
| Sb | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10037388 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Northern Basin and RangeWide Rift
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Jumbo mine, Delamar Mining District, Lincoln County, Nevada, USA