← Search
Sample M79PR-116
NavDat sample number 7175 · GRANODIORITE
Sample
| Sample ID | M79PR-116 |
|---|
| Rock name | GRANODIORITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Collected by | D.M. Miller |
|---|
| Comment | Porphyritic biotite granodiorite. Potassium feldspar phenocrysts. Pale-gray coarse-grained groundmass of quartz, plagioclase, potassium feldspar, biotite, and, rarely, hornblende. Accessory zircon, sphene, apatite, and xenotime?. Biotite is reddish brown; some books are partially altered to pale-green chlorite. |
|---|
Location
| Latitude | 41.1947 |
|---|
| Longitude | -114.009 |
|---|
| Location | Pilot Range |
|---|
| State / province | Utah |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 36.6 |
|
36.1 |
37.1 |
|
|
Analyses
No chemical analyses are stored for this sample.
