Unnamed Occurrence (ARDF - TN038; Bonanza-Rosa Ridge), Melozitna Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - TN038; Bonanza-Rosa Ridge) | - not defined - |
| Melozitna Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
65° 22' 4'' North , 151° 16' 37'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: The Bonanza-Rosa Ridge lode occurrence is at an elevation of 2,600 feet on the divide at the heads of Bonanza and Rosa creeks, about 7 miles north of the Yukon River. The site is Alaska Division of Geological and Geophysical Surveys (ADGGS) sample station 92RE04 (Solie and others, 1993), in the northwest quarter of section 9, T. 6 N., R. 18 W., of the Fairbanks Meridian. This location is accurate within 1000 feet.
Geology: Bedrock in the vicinity of this occurrence is Paleozoic schist, quartzite, phyllite, and slate, and subordinate limestone, dolomite, greenstone, and chert (Chapman and others, 1982). The rocks are structurally complex. In 1992, the Alaska Division of Geological and Geophysical Surveys (ADGGS) investigated the Bonanza-Rosa Ridge area as part of a mineral resource evaluation of State-selected lands (Solie and others, 1993). Rocks collected in this area (at stations 92RE04 and 92MW418) included micaceous quartzite(?) and gossaneous, quartzose calcareous semischist. A sample of the quartzite(?) contained 336 parts per million (ppm) lead and 151 ppm zinc; and a sample of the semischist contained 190 ppm arsenic, 22 ppm bismuth, 2,800 ppm chromium, 1,534 ppm manganese, and 10 ppm antimony (Solie and others, 1993).
Workings: Bedrock in the vicinity of this occurrence is Paleozoic schist, quartzite, phyllite, and slate, and subordinate limestone, dolomite, greenstone, and chert (Chapman and others, 1982). The rocks are structurally complex. In 1992, the Alaska Division of Geological and Geophysical Surveys (ADGGS) investigated the Bonanza-Rosa Ridge area as part of a mineral resource evaluation of State-selected lands (Solie and others, 1993). Rocks collected in this area (at stations 92RE04 and 92MW418) included micaceous quartzite(?) and gossaneous, quartzose calcareous semischist. A sample of the quartzite(?) contained 336 parts per million (ppm) lead and 151 ppm zinc; and a sample of the semischist contained 190 ppm arsenic, 22 ppm bismuth, 2,800 ppm chromium, 1,534 ppm manganese, and 10 ppm antimony (Solie and others, 1993).
Commodities (Major) - Pb, Zn; (Minor) - As, Cr, Mn, Sb
Development Status: None
Deposit Model: Polymetallic veins(?) (Cox and Singer, 1986; model 22c).
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
1 valid mineral.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
Other Databases
| Link to USGS - Alaska: | TN038 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Ruby DomainDomain
- Ruby TerraneAccretionary Complex
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