| Field | Value |
|---|---|
| Unique Sample ID Number | W223187 |
| Analytical Job Number | BK71 |
| Submitter Name | Brew, David A. |
| Date Submitted | 19830913 |
| Field Number | 83EW020A |
| State | AK |
| Latitude | 58.29944 |
| Longitude | -134.33611 |
| Source of Sample | mine/quarry |
| Collection Method | single/grab |
| Primary Classification | rock |
| Secondary Classification | metamorphic |
| Specific Name | metagraywacke |
| Additional Attributes and Comments | not metasomatic; quartz present; feldspathic (granite gneiss, syenite gneiss, biotite gneiss);; pyrite-graphite-quartz greywacke; |
| Geologic Age or Range | Permian--Cretaceous |
| Type of Metamorphism | contact |
| Metamorphic Facies or Grade | greenschist |
| (click for info) | |
| Geologic map unit | -134.33611, 58.29944 |
| Nearby scientific data | Find additional scientific data near this location |
| Element | Measured value | Units of measure | Analytical method |
|---|---|---|---|
| Na2O | 3.36 | percent by weight | XRF |
| MgO | 8.13 | percent by weight | XRF |
| Al2O3 | 16 | percent by weight | XRF |
| SiO2 | 44.4 | percent by weight | XRF |
| P2O5 | 0.43 | percent by weight | XRF |
| K2O | 0.56 | percent by weight | XRF |
| CaO | 6.39 | percent by weight | XRF |
| TiO2 | 1.78 | percent by weight | XRF |
| MnO | 0.17 | percent by weight | XRF |
| FeO | 8 | percent by weight | Titration |
| FeTO3 | 9.62 | percent Fe2O3 by weight | XRF |