Outcrop or artificial surface exposure, Monzonite
| Geographic location |
-115.01, 39.268056
115°
'
36"
W,
39°
16'
5"
N
White Pine county,
NV
Riepetown
1:24,000 scale map quadrangle
Accurate to within 1 minute (~1 mile)
SE1/4 NE1/4 SEC. 8, T16N, R62E, 1 1/2 MI. SW OF RUTH ALONG NEVADA ROUTE 44, ROBINSON MINING DISTRICT (LONG. VALUE CORRECTED BYJ.H. SCHILLING)
|
|---|---|
| Source of sample | Outcrop or artificial surface exposure |
| Rock name | Monzonite |
| Description | WEARY FLAT STOCK. MEDIUM-GRAINED MONZONITE COMPOSED OF PLAGIOCLASE, ORTHOCLASE, HORNBLENDE (INCLUSIONS OF PLAGIOCLASE AND SPHENE), AND QUARTZ. |
| 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 NE1/4 SEC. 8, T16N, R62E, 1 1/2 MI. SW OF RUTH ALONG NEVADA ROUTE 44, ROBINSON MINING DISTRICT (LONG. VALUE CORRECTED BYJ.H. SCHILLING) |
| 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 | -115.01, 39.268056 |
| Nearby scientific data | Find additional scientific data near this location |
| Age estimate | 111.28 ± 3Ma age of intrusion
|
|---|---|
| Type of analysis | conventional K-Ar |
| Rock or mineral analyzed | hornblende ANALYZED SEPARATE CONTAINED 2% IMPURITIES
|
| Analytical details | |
| Lab sample ID | L-961 |
| Decay constants | 4.72E-04, 0.585E-04, 1.19E-04* |
| K2O concentration | 0.829 % |
| Radiogenic 40Ar concentration | 1.37 |
| Radiogenic Ar | 89 % |
| Comments | THIS ANALYSIS ALSO REPORTED IN MCDOWELL AND KULP (1967) |