Outcrop or artificial surface exposure, Vein
| Geographic location |
-117.3, 41.158333
117°
18'
"
W,
41°
9'
30"
N
Humboldt county,
NV
Osgood Mountains
1:62,500 scale map quadrangle
Accurate to within 1 minute (~1 mile)
EAST-CENTRAL SEC. 24, T38N, R41E; MARCUS 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 | EAST-CENTRAL SEC. 24, T38N, R41E; MARCUS 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 | -117.3, 41.158333 |
| Nearby scientific data | Find additional scientific data near this location |
| Age estimate | 90.79 ± 3.3Ma |
|---|---|
| Type of analysis | conventional K-Ar |
| Rock or mineral analyzed | sericite 2M(SUB 1) MUSCOVITE
|
| Analytical details | |
| Lab sample ID | MAR-103 |
| Decay constants | 4.72E-04, 0.585E-04, 1.19E-04* |
| K2O concentration | 8.69 % |
| Radiogenic 40Ar concentration | 11.65 |
| Radiogenic Ar | 7079 % |
| Comments | AGE OF MINERALIZATION & ALTERATION |