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Sample JM-89
NavDat sample number 9425 · MONZONITE
Sample
| Sample ID | JM-89 |
|---|
| Rock name | MONZONITE |
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| Rock type | PLUTONIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | fine-grained, porphyritic; less than 2% K-feldspar megacrysts; other phenocrysts of andesine, hornblende, biotite, diopsidic aegirine-augite, quartz; groundmass largely of plagioclase, quartz, and orthoclase compoase groundmass |
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Location
| Latitude | 47.2194 |
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| Longitude | -109.082 |
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| State / province | Montana |
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| Volcanic field | Linster Peak Dome |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 91.1 |
|
95.5 |
96.7 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 63.08 | | WT% | XRF |
| TIO2 | 0.35 | | WT% | XRF |
| AL2O3 | 16.77 | | WT% | XRF |
| FE2O3 | 2.32 | | WT% | TIT |
| FEO | 2.24 | | WT% | TIT |
| MNO | 0.12 | | WT% | XRF |
| MGO | 0.95 | | WT% | XRF |
| CAO | 3.69 | | WT% | XRF |
| NA2O | 4.17 | | WT% | AAS |
| K2O | 3.99 | | WT% | XRF |
| P2O5 | 0.1 | | WT% | XRF |
| LOI | 1.16 | | WT% | XRF |
| TOTAL | 98.94 | | WT% | XRF |
| RB | 118.3 | | PPM | XRF |
| SR | 900.7 | | PPM | XRF |
| Y | 22 | | PPM | XRF |
| ZR | 193.1 | | PPM | XRF |
| NB | 16.4 | | PPM | XRF |
| SIO2 | 64.59 | | WT% | XRF |
| AL2O3 | 16.91 | | WT% | XRF |
| TIO2 | 0.38 | | WT% | XRF |
| FEOT | 4.87 | | WT% | XRF |
| MNO | 0.13 | | WT% | XRF |
| CAO | 3.58 | | WT% | XRF |
| MGO | 0.97 | | WT% | XRF |
| K2O | 4.38 | | WT% | XRF |
| NA2O | 4.04 | | WT% | XRF |
| P2O5 | 0.14 | | WT% | XRF |
| TOTAL | 99.99 | | WT% | XRF |
| RB | 139 | | PPM | XRF |
| SR | 582 | | PPM | XRF |
