Vermont Dome Occurrence, Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Vermont Dome Occurrence | Occurrence |
| Koyukuk Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
67° 31' 4'' North , 150° 13' 44'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Other/historical names associated with this locality:
Ivy claims nos. 1- 2, Malarin claims nos. 1-2
Location: This occurrence is on the south ridge of Vermont Dome, about 0.5 mile south of the summit. Mulligan (1974) described the location as near the crest of the spur that extends southward from the summit of the Dome. The occurrence is at an elevation of about 3,550 feet on this spur. The location is accurate within one-half mile.
Geology: Brosge and Reiser (1960) describe this occurrence as unidentified copper sulfides and malachite stains in Devonian phyllite and siltstone. Mulligan (1974) noted green-stained, light-brown float of quartz vein material with traces of copper, zinc, and iron sulfides, and tiny pods of goethite, along fracture planes in schist fragments found in talus. Eden (2000) collected samples, mostly float, of locally iron-stained quartz on the south side of Vermont Dome. One sample was weakly anomalous in Cu and another weakly anomalous in Pb. His mapping identifies the rocks in the area as Upper Devonian, gray-black phyllite and pelitic mica schist of the Beaucoup Formation. Kurtak and others (2002) report gem-quality quartz near this site.
Alteration: Iron oxides noted.
Commodities (Major) - Cu; (Minor) - Pb(?), Zn
Development Status: None
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
4 valid minerals.
Detailed Mineral List:
| ⓘ Goethite Formula: Fe3+O(OH) |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Other Databases
| Link to USGS - Alaska: | WI028 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Brooks Range DomainVolcanic Arc
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Vermont Dome Occurrence, Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USA