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
|
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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 |
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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 |