Unnamed Occurrence (ARDF - TN055; Rampart road; lower Minook Creek), Rampart Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
65° 29' 30'' North , 150° 6' 57'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is at an elevation of about 600 feet on the west side of Minook Creek, and 380 feet above the Rampart road. The site is at Alaska Division of Geological and Geophysical Surveys (ADGGS) sample station 96SL220 (Liss and others, 1997), about at the middle of the west boundary of section 30, T. 8 N., R. 12 W., of the Fairbanks Meridian. The location is accurate within 500 feet.
Geology: Bedrock in the lower Minook Creek area consists of Lower Tertiary rhyolite and basalt that unconformably overlie Triassic to Mississippian Rampart Group argillite, chert, gabbro, and diverse sedimentary and low-grade metasedimentary rocks (Reifenstuhl and others, 1997 [PDF 97-15a]). No plutonic rocks are mapped in the area, which is cut by northeast- and north-trending high-angle faults. The bedrock at this occurrence is light-colored rhyolite that on the west side of Minook Creek is mostly covered by Quaternary unconsolidated deposits. A sample (96SL220) of [Rampart Group] copper stained, altered volcanic rock from the west side of the Rampart road about 0.5 mile below the junction of Hunter and Minook creeks contained 971 parts per million (ppm) copper and 6 ppm bismuth (Liss and others, 1997). A sample (96SL219) of Rampart Group pyritic volcanic(?) rock contained 128 ppm copper. There is no record of exploration or mining at this site.
Workings: A sample (96SL220) of [Rampart Group] copper stained, altered volcanic rock from the west side of the Rampart road about 0.5 mile below the junction of Hunter and Minook creeks contained 971 parts per million (ppm) copper and 6 ppm bismuth (Liss and others, 1997). A sample (96SL219) of Rampart Group pyritic volcanic(?) rock contained 128 ppm copper. There is no record of exploration or mining at this site.
Commodities (Major) - Cu
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
2 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Other Databases
| Link to USGS - Alaska: | TN055 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Ruby DomainDomain
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