Sample Type is Igneous › Volcanic › Felsic Extrusive › Obsidian
17 records | Download| IGSN | Sample Type | Notes | Location | Number Thin Sections | Storage Location |
|---|---|---|---|---|---|
| GRD0001S0 | Obsidian | Black, conchoidal fracture. Grey band. | California | 2 | Ritter 154, 15 M |
| GRD0003S0 | Obsidian | California | 1 | Ritter 154, 15 M | |
| GRD0005S0 | Obsidian | 1 | Ritter 154, 19 F | ||
| GRD000GS0 | Obsidian | Spherulitic Obsidian | California | 1 | Ritter 154, 15 M |
| GRD003QS0 | Obsidian | Nice conchoidal fracture | Arizona | 0 | Camp Elliott |
| GRD00A9S0 | Obsidian | Likely from Mount Ourito Flow on Easter Island (rhyolite flow). | Chile | 0 | Camp Elliott |
| GRD00ANS0 | Obsidian | A local example of obsidian. | California | 0 | Ritter 154, 15 M |
| GRD00D6S0 | Obsidian | Small sample. Samples 511-519 from Ascension Island. | United Kingdom | 0 | Camp Elliott |
| GRD00HMS0 | Obsidian | altered obsidian with Q | 0 | Camp Elliott | |
| GRD00IFS0 | Obsidian | obsidian with pumaceous layer +Q? | 0 | Camp Elliott | |
| GRD00INS0 | Obsidian | obsidian (half dozen small pieces) | 0 | Camp Elliott | |
| GRD02N3S0 | Obsidian | Small sample of black perlite with white feldspar phenocrysts | California | 1 | Ritter 154, 15 M |
| GRD02PAS0 | Obsidian | Red obsidian with scoriaceous pockets. Original label: Melted rock. Obsidian. Monterey Formation. 1988 Fall Field Trip. | California | 2 | Ritter 154, 15 M |
| GRD02QHS0 | Obsidian | Obsidian Salton domes(obsidian butte), Salton Sea | California | 1 | Ritter 154, 15 M |
| GRD02R6S0 | Obsidian | Spherulitic devitrification of obsidian. Large radiating spherulites | 0 | Ritter 154, 15 M | |
| GRD02T9S0 | Obsidian | Obsidian | California | 0 | Ritter 154, 15 M |
| GRD03Z8S0 | Obsidian | California | 0 | Ritter 154, 15 M |