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Sample L-844
NavDat sample number 2775 · MONZONITE
Sample
| Sample ID | L-844 |
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| 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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| Collected by | D. Dixon, Phelps Dodge Corp., and F.W. McDowell, Columbia Univ. |
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| Comment | composed of altered-plagioclase badly sericitized, orthoclase badly sericitized, quartz, biotite scarce and somewhat chloritic, hornblende partially altered to chlorite, epidote, magnetite. Agreement of biotite and hornblende ages from an altered rock probably reflects time of alteration; compare with L-843 above. |
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Location
| Latitude | 32.3656 |
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| Longitude | -112.883 |
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| Location | W of Ajo, Pima County, AZ |
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| State / province | Arizona |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 20.1 |
|
16.6 |
23.6 |
|
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Analyses
No chemical analyses are stored for this sample.
