| Geographic location |
-114.991667, 39.261111
114°
59'
30"
W,
39°
15'
40"
N
White Pine county,
NV
Ruth
1:24,000 scale map quadrangle
Accurate to within 1 minute (~1 mile)
SE1/4 SE1/4 SEC. 9, T16N, R62E, NE CORNER OF LIBERTY OPEN-PIT COPPER MINE NEAR RUTH , ROBINSON MINING DISTRICT
|
|---|---|
| Source of sample | Quarry |
| Rock name | Monzonite |
| Description | LIBERTY PIT STOCK. HIGHLY ALTERED MONZONITE PORPHYRY COMPOSED OF ALTERED ORTHOCLASE, QUARTZ, AND BIOTITE (LIGHT BROWN, CLUSTERED) PHENOCRYSTS IN A GROUNDMASS OF QUARTZ AND SERICITE. |
| Laboratories | Lamont (Columbia University) |
| Compiler name | Marvin, R.F. |
| Date compiled | 1975 10 |
| Precision of location | Accurate to within 1 minute (~1 mile) |
| Location comment | SE1/4 SE1/4 SEC. 9, T16N, R62E, NE CORNER OF LIBERTY OPEN-PIT COPPER MINE NEAR RUTH , ROBINSON MINING DISTRICT |
| Bibliographic reference | Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16. |
| (click for info) | |
| Geologic map unit | -114.991667, 39.261111 |
| Nearby scientific data | Find additional scientific data near this location |
| Age estimate | 113.42 ± 3Ma age of intrusion
|
|---|---|
| Type of analysis | conventional K-Ar |
| Rock or mineral analyzed | biotite 80-100 MESH ANALYZED SEPARATE CONTAINED 2% IMPURITIES
|
| Analytical details | |
| Lab sample ID | L-1013 |
| Decay constants | 4.72E-04, 0.585E-04, 1.19E-04* |
| K2O concentration | 8.9 % |
| Radiogenic 40Ar concentration | 15 |
| Radiogenic Ar | 90 % |
| Comments | THIS ANALYSIS ALSO REPORTED IN MCDOWELL AND KULP (1967) |