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Top Dollar Occurrence, Circle Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Top Dollar Occurrence | Occurrence |
| Circle Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
65° 26' 34'' North , 144° 45' 21'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: The location is the approximate center of 20 mining claims located 6.5 road miles from Circle Hot Springs via the Portage Creek road.
Geology: The Top Dollar (TD) claims are situated in the Paleozoic metamorphic rocks intruded by Cretaceous to Tertiary granitic rocks that constitute part of the Yukon-Tanana Uplands metamorphic terrane. The region is transected by regional-scale, northeast-trending shear zones and northeast-trending mafic dikes. Gold mineralization has been observed in the form of gold-arsenopyrite-quartz veins and stockwork zones in host rocks consisting of massive, hornfelsed, micaceous quartzite and schist. The zones are near to the intrusive contact of the Cretaceous 'Two Bit' granite pluton, possibly in mineralized pendants above the pluton. Rock grab samples contain up to 14 ppm gold, highly anomalous arsenic and antimony, and variably anomalous bismuth and base metals (D.D. Adams, written commun., 1998).
Workings: Surface samples taken (D.D. Adams, written commun., 1998).
Alteration: Silicification, quartz-sericite, chlorite, and iron-oxides.
Commodities (Major) - Au
Development Status: None
Deposit Model: Gold-arsenopyrite veins in hornfels and schist.
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
3 valid minerals.
Detailed Mineral List:
| ⓘ Arsenopyrite Formula: FeAsS |
| ⓘ Native Gold Formula: Au |
| ⓘ 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 | |||
| ⓘ | 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 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | CI058 |
|---|
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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