Introduction: Impact melts resulting from craterproducing impacts on asteroids can be used to understand the collisional evolution of our solar system. Part of that analysis includes an assessment of the cooling rates of the impact melts and/or the locations where the melts are deposited. In this study, we examined LAP 04751 [1], which is an impact melt breccia that came from the H-chondrite pa...

The Apollo 16 sample 66095, named “Rusty Rock”, is enriched in volatile and moderately elements. impact melt breccia characterized by abundant Fe-rich sulfide chloride alteration phases, including FeS, ZnS, FeCl2. These phases have previously been interpreted to be the result of fumarolic breccia. Here we present results two different experimental approaches, which aim constrain temperature con...

The Northparkes district, central New South Wales, hosts several economic Cu–Au deposits associated with discrete, thin, porphyry intrusive complexes emplaced in the Late Ordovician during formation of Macquarie Arc. recently discovered Two-Thirty Cu–Au–(Mo) prospect is a mineralised magmatic–hydrothermal breccia complex that hosted by moderately east-dipping Goonumbla Volcanic Complex on weste...

Ophiolite magnesite deposits are among the main sources of magnesite, a raw material critical for EU. The present work focuses on occurrences at Kymasi (Evia Island, Greece), in close spatial association with chromitite within same peridotite massif, and relationship between ultramafic rocks late veins. Chromitite lenses hosted dunite, contact partially serpentinized cut by Close to veins, show...

Different techniques have been combined to identify the structure and chemical composition of siliceous breccia from a drill core nickel laterites in New Caledonia (Tiebaghi mine). XRD analyses show quartz as major phase. Micro-Raman spectroscopy confirmed presence reddish microcrystalline phase with inclusion microparticles iron oxides oxyhydroxide. Lithoclasts present are composed lizardite, ...

Although fossil fluvial travertines have been described, factors controlling their formation are poorly understood because of the paucity modern counterparts. To disclose processes affecting deposition, a travertine system at Bagni San Filippo (Siena, central Italy) was studied here and compared with other cases. The occur in valley an ephemeral stream, but continuous water influx from hot spri...