Sample: 09KCnye104
| Sample ID: | 09KCnye104 [1] |
| Station ID: | 09KCnye104 |
| AT Num: | |
| Volcano: | Kasatochi |
| Possible source: | Kasatochi |
| Eruption: | |
| Collector: | Nye, C. J. |
| Date sampled: | |
| Sample type 1: | Other |
| Color: | |
| Final unit: | |
| Text Description: | Peregrine glaciovolcanic deposits. ~1.5m l-max boulder. Visible part of mode is 4-5mm faceted cpx. These large blocks are apparent lithics in the scoriaceous "pepperite" thus >= same age. Hopefully this block is datable and should be among the oldest rocks on the island. [INSECT collected: fly on rock in vial #106919.]. Medium gray (35%k) lava with faint greenish cast. 5% stubby prisms of cpx to 3x5mm. Some ambiguity about these, black, not emerald green in hand specimen, but with hand lens they seem to be vitreous olive green, unlike amphibole -- on the other hand, some prismatic section seem to have amphibole angles]. Sparse plag phenocrysts as 3mm long laths. Abundant plag in gms. Gms fine-grained sugary holocrystalline. |
| Sample Location: |