of the porphyry copper system at El Perdido where A-veined clasts within hydrothermal breccia are observed (Figure 3). Different varieties of hydrothermal breccias have been observed at El Perdido ...

Figure 1 - Revised geological map at El Perdido porphyry Cu-Au-Mo target showing recently identified hydrothermal breccia.

Hydrothermal systems may also be tied to Mars ... It is a polymict regolith breccia—essentially a mixture of fragments from ...

“Micro- to nanoscale microscopy of a unique impact-shocked zircon from the regolith breccia meteorite NWA7034 reveals textural and chemical indicators of hydrothermal conditions on Mars during ...