Rex Mine, Gold Circle Mining District (Midas Mining District), Elko County, Nevada, USAi
| Regional Level Types | |
|---|---|
| Rex Mine | Mine |
| Gold Circle Mining District (Midas Mining District) | Mining District |
| Elko County | County |
| Nevada | State |
| USA | Country |
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Latitude & Longitude (WGS84):
41° 14' 50'' North , 116° 47' 8'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Structure: Fault Along Rhyolite-Andesite Contact
Alteration: Silicification
Deposit: Vein, fault zone bearing auriferous pyrite & argentite developement consists of two shafts, numberous drifts, adits, and small open pits. Sirdevan in his 1913 report has both a mine map and a property map. ; info.src : 1 pub lit
Deposit type: Epithermal vein, Comstock
Geology: The ore lode is a vein along the fault contact betw/ rhyolite and overlying andesite. The vein is a zone of crushed silicified Fe-stained rhyolite from 5 to 15 ft. Wide. The footwall is the fault slickenslide. A cross vein in the rhyolite has been developed for a short distance. Most of the ore is oxidized, but sulphides (gold assoc. W/pyrite) are present at the bottom of the mine.
Ore(s): Fault Zone
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
6 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 |
| ⓘ Cinnabar Formula: HgS |
| ⓘ Marcasite Formula: FeS2 |
| ⓘ Native Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Acanthite | 2.BA.35 | Ag2S |
| ⓘ | Cinnabar | 2.CD.15a | HgS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Marcasite | 2.EB.10a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Acanthite | Ag2S |
| S | ⓘ Cinnabar | HgS |
| S | ⓘ Marcasite | FeS2 |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Marcasite | FeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Ag | Silver | |
| Ag | ⓘ Acanthite | Ag2S |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Hg | Mercury | |
| Hg | ⓘ Cinnabar | HgS |
Other Databases
| Link to USGS MRDS: | 10045548 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Copper–Bull Run–Elko–Indian Wells BasinBasin
- Mojave DomainDomain
- Northern Basin and RangeWide Rift
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