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Sample HD-4
NavDat sample number 6719 · GRANODIORITE
Sample
| Sample ID | HD-4 |
|---|
| Rock name | GRANODIORITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Collected by | R. Methot |
|---|
| Comment | medium to coarse grained rock with hypidiomorphic texture; hb and plagioclase with lesser biotite, minor quartz, magnetite-ilmenite, and apatite |
|---|
Location
| Latitude | 45.6478 |
|---|
| Longitude | -111.916 |
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| State / province | Montana |
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| Volcanic field | Tobacco Root batholith |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 72 |
|
70 |
74 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| RB | 48.5 | | PPM | MS-ID |
| SR | 565.9 | | PPM | MS-ID |
| RB87_SR86 | 0.248 | | | MS-ID |
| SR87_SR86 | 0.7082 | | | MS-ID |
