← Search
Sample USGSD-M744-2
NavDat sample number 10032 · GRANITE
Sample
| Sample ID | USGSD-M744-2 |
|---|
| Rock name | GRANITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Comment | uniform, coarse grained; large K-feldspar phenocrysts with few zonally grouped inclusions; plagioclase, quartz, biotite, hornblende, and tiny sphene |
|---|
Location
| Latitude | 45.5256 |
|---|
| Longitude | -112.836 |
|---|
| Location | just N of and 100 ft above road at 6800 ft elevation, block from cliff in Rock Creek Gorge; Beaverhead County |
|---|
| State / province | Montana |
|---|
| Volcanic field | Pioneer Batholith |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 71.3 |
|
68.9 |
73.7 |
|
|
Analyses
No chemical analyses are stored for this sample.
