| IGSN | Sample Type | Notes | Location | Number Thin Sections | Storage Location |
|---|---|---|---|---|---|
| GRD0341S0 | Magnesite | Hydromagnesite | California | 0 | Ritter 154, 5 C |
| GRD0345S0 | Magnesite | Magnesite from UCLA mineral collection | Unknown | 0 | Ritter 154, 5 C |
| GRD034ZS0 | Magnesite | Magnesite | California | 0 | Ritter 154, 5 D |
| GRD0355S0 | Magnesite | X-rayed by California Department of Mines, San Francisco, Jan 1967 | California | 0 | Ritter 154, 5 D |