| IGSN | Sample Type | Notes | Location | Number Thin Sections | Storage Location |
|---|---|---|---|---|---|
| GRD02TDS0 | Hydrothermal Ore Deposits | Gold ore. Vein/vug filling quartz with oxides, disseminated gold. | South Africa | 0 | Ritter 154, 14 Q |
| GRD02XLS0 | Hydrothermal Ore Deposits | Gold ore. Gold-bearing quartz vein | California | 0 | Ritter 154, 14 Q |
| GRD03Z1S0 | Hydrothermal Ore Deposits | Bore Hole #9. Blew out in 1965, always under water. Plagioclase and quartz bearing hydrothermally altered sample. Not ore. | New Zealand | 1 | Ritter 154, 14 O |