Outcrop or artificial surface exposure, Vein
| Geographic location |
-117.270833, 41.172222
117°
16'
15"
W,
41°
10'
20"
N
Humboldt county,
NV
Osgood Mountains
1:62,500 scale map quadrangle
Accurate to within 1 minute (~1 mile)
NW1/4 SEC. 17, T38N, R42E; KIRBY TUNGSTEN MINE; NORTHERN OSGOOD MOUNTAINS
|
|---|---|
| Source of sample | Outcrop or artificial surface exposure |
| Rock name | Vein |
| Description | SERICITE-BEARING SEAM IN TACTITE |
| Laboratories | Geochron (Krueger of Cambridge, MA) |
| Compiler name | Nichols, S.L. |
| Date compiled | 1978 05 |
| Precision of location | Accurate to within 1 minute (~1 mile) |
| Location comment | NW1/4 SEC. 17, T38N, R42E; KIRBY TUNGSTEN MINE; NORTHERN OSGOOD MOUNTAINS |
| Bibliographic reference | Silberman, M.L., Berger, B.R., and Koski, R.A., 1974, K-Ar Age Relations Of Granodiorite Emplacement and Tungsten and Gold Mineralization Near The Getchell Mine, Humboldt County, Nevada: Economic Geology, v. 69, p. 646-656. |
| (click for info) | |
| Geologic map unit | -117.270833, 41.172222 |
| Nearby scientific data | Find additional scientific data near this location |
| Age estimate | 90.01 ± 3.4Ma |
|---|---|
| Type of analysis | conventional K-Ar |
| Rock or mineral analyzed | sericite 2M(SUB 1) MUSCOVITE
|
| Analytical details | |
| Lab sample ID | KIR-114 |
| Decay constants | 4.72E-04, 0.585E-04, 1.19E-04* |
| K2O concentration | 4.87 % |
| Radiogenic 40Ar concentration | 6.471 |
| Radiogenic Ar | 6357 % |
| Comments | AGE OF MINERALIZATION & ALTERATION |