Killarney Mine, Fairbanks Mining District, Fairbanks North Star Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Killarney Mine | Mine |
| Fairbanks Mining District | Mining District |
| Fairbanks North Star Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
64° 52' 19'' North , 148° 0' 0'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Ester | 2,422 (2011) | 2.8km |
| College | 12,964 (2011) | 9.5km |
| South Van Horn | 558 (2017) | 12.2km |
| Fairbanks | 32,325 (2017) | 13.9km |
| Farmers Loop | 4,853 (2017) | 14.8km |
Location: The Killarney mine is located in the SE1/4 NW1/4 sec. 32, T. 1 N., R. 2 W., Fairbanks Meridian. This mine is at the head of Saint Patrick Creek at an elevation of about 1,340 feet; it is about 1.8 miles east-southeast of the top of Ester Dome. The mine is included in locality 14 of Cobb (1972 [MF 410]).
Geology: About 180 tons of gold was produced from the Killarney mine, which consists of fractured and re-cemented gold-bearing quartz veins in micaceous schist (Chapman and Foster, 1969, p. D18; Stewart, 1933, p. 140-141). The veins are oriented N. 5 E., 75 W. and are intersected at intervals by faults that trend at a shallow angle to the strike and dip of the veins (Stewart, 1933, p. 141). Two types of quartz were observed in the vein (Stewart, 1933, p. 141). One type is low-grade ore, has a sugary texture, and is unfractured. The other is somewhat translucent, grayish quartz that has been fractured into segments from one-quarter inch to one-half inch in length that were was subsequently recemented. In the second type of quartz, free gold is visible in particles as large as a pinhead. Workings consisted of a 94-foot shaft with three drifts (Stewart, 1933, p. 140-141).
Workings: In January of 1932, a vertical shaft was started that eventually reached a depth of 94 feet by 1933 (Stewart, 1933, p. 140). At the 90-foot level, drifts were extended both north and south along the vein. The north drift was driven a distance of about 60 feet from the shaft where it encountered a fault. The south drift was driven for about 165 feet from the shaft. Another drift at the 30-foot level was driven northward toward the fault (Stewart, 1933, p. 140-141).
Alteration: The vein quartz is oxidized and iron-stained (Stewart, 1933, p. 141).
Production: About 180 tons of ore was mined from the Killarney workings during 1932; the ore was processed at the Saint (St.) Paul mill (Stewart, 1933, p. 141).
Commodities (Major) - Au
Development Status: Yes; small
Deposit Model: Schist-hosted gold-quartz vein
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.
Detailed Mineral List:
| ⓘ Native Gold Formula: Au |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
List of minerals for each chemical element
| Au | Gold | |
|---|---|---|
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | FB043 |
|---|
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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