| IGSN | Sample Type | Notes | Location | Number Thin Sections | Storage Location |
|---|---|---|---|---|---|
| GRD01Y7S0 | Veins | Calcite/carbonate veins and pockets in green chlorite. Occasional quartz crystals. Original description: micaceous marble with calcium carbonate veins. | California | 0 | Ritter 154, 24 I |
| GRD029JS0 | Veins | Large white carbonate veins in dark green, fine-grained serpentinite(?) | Mexico | 0 | Ritter 154, 24 I |
| GRD029WS0 | Veins | Relict sedimentary layers with slight foliation. Several generations of veins: warped veins in pinkish layer, small vertical veins in dark layer, large cross-cutting quartz. | Alpine | 1 | Ritter 154, 14 P |