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Sample Z 8R
NavDat sample number 30109 · ALNÖITE
Sample
| Sample ID | Z 8R |
|---|
| Rock name | ALNÖITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | ULTRAMAFIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 48.2356 |
|---|
| Longitude | -109.684 |
|---|
| Location | Bearpaw Mountains |
|---|
| State / province | Montana |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 52 |
|
50 |
54 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| RB | 80.24 | | PPM | MS |
| SR | 6045.1 | | PPM | MS |
| SM | 20.5 | | PPM | MS |
| ND | 152 | | PPM | MS |
| SR87_SR86 | 0.706511 | | | MS |
| ND143_ND144 | 0.512075 | | | MS |
References
- MacDonald, R; Upton, B G J; Collerson, K D; Hearn, B C, Jr; James, D (1992) Potassic mafic lavas of the Bearpaw Mountains, Montana; mineralogy,chemistry, and origin. Journal of Petrology, vol.33, no.2, pp.305-346, Apr 1992
