| Yacimiento | Formación | Comunidad autónoma |
|---|---|---|
| Aguilar de Campoo, SW Cuenca | — | Castilla y León |
| MJN-1-base, Montejícar area, Subbetic | Jarropa Radiolarite | — |
| MJW-E-55c, Montejícar area, Subbetic | Jarropa Radiolarite | — |
| MJW-E-72, Montejícar area, Subbetic | Jarropa Radiolarite | — |
| Puente Genil | Camarena | Andalucía |
| Quintanaopia area, Burgos | — | Castilla y León |