Coffee Dome Prospect (ARDF - LG204), Fairbanks Mining District, Fairbanks North Star Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Coffee Dome Prospect (ARDF - LG204) | Prospect |
| Fairbanks Mining District | Mining District |
| Fairbanks North Star Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
65° 5' 44'' North , 147° 4' 58'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Two Rivers | 719 (2011) | 24.9km |
| Pleasant Valley | 725 (2011) | 25.8km |
| Badger | 19,482 (2011) | 39.1km |
| North Pole | 2,189 (2017) | 40.3km |
| Moose Creek | 747 (2011) | 42.9km |
The claims that cover the Coffee Dome prospect are both State of Alaska mining claims and land leased from the University of Alaska; as of 2007, most of the known mineralization is on the University of Alaska lands.
Location: The Coffee Dome prospect is on a large block of claims that cover about 16 square miles. However, most of the known mineralization is in an elongate north-trending area about 0.8 mile long and 0.3 mile wide near the center of section 11, T. 2 N., R. 3 E. The coordinates are at about the center of this area and about 2 miles east of Coffee Dome. The location is accurate.
Geology: The Coffee Dome prospect is controlled by Internal Tower Hill Mines, Ltd. (2008, Coffee Dome) who staked the property from 2004 to 2006. Through 2006, the work on the property was mainly stream sediment and soil geochemical surveys and some sampling of surface mineralization. The property was first identified from anomalous gold, tellurium, and bismuth geochemical anomalies and mineralized samples collected at the surface. The mineralized samples consist of banded quartz veins 10 to 30 cm thick with scorodite and occasionally arsenopyrite. During 2007, International Tower Hill (2007, Trenching) dug several trenches over the main target area that exposed veins with grades of up to 168 grams of gold per ton and high silver, arsenic, antimony, bismuth, and tellurium. Soil surveys defined two large areas anomalous in gold that are thought to reflect a large gold system over 3 kilometers long and 1 kilometer wide. They consider the deposit analogous to the Pogo mine (BD033) and probably close to an intrusive source. The rocks in the area generally consist of middle to early Paleozoic and(or) Late? Proterozoic quartz and pelitic schist of the Yukon-Tanana Upland (Wilson and others, 1998).
Workings: The Coffee Dome prospect is controlled by Internal Tower Hill Mines, Ltd. (2008, Coffee Dome) who staked the property from 2004 to 2006. Through 2006, the work on the property was mainly stream sediment and soil geochemical surveys and some sampling of surface mineralization. During 2007, International Tower Hill (2007, Trenching) dug several trenches that exposed mineralization and they extended their soil surveys.
Alteration: No data.
Commodities (Major) - Au, Bi, Te; (Minor) - Cu, Pb, Sb, Zn
Development Status: None
Deposit Model: Arsenopyrite-gold-quartz veins with tellurium and bismuth.
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
2 valid minerals.
Detailed Mineral List:
| ⓘ Arsenopyrite Formula: FeAsS |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| 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 | ⓘ Arsenopyrite | FeAsS |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
Other Databases
| Link to USGS - Alaska: | LG204 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- North America PlatformPassive Margin
- Yukon-Tanana lower DomainDomain
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