Visible gold has been observed in hole ALT-25-009 within two separate polymetallic quartz-sulphide ... and associated hydrothermal fluids and clasts are cemented by a biotite dominated ...

The clasts can then react with water, producing a solution saturated with calcium. That solution can either recrystallize as calcium carbonate to fill the cracks or react with the pozzolanic ...

Original Roman lime clasts (top) vs modern recreation. (Image: Seymour et al/Science Advances DOI 10.1126/sciadv.add1602) Hot mixing didn’t just reduce the concrete’s curing and setting times.

The Chang’e-5 mission touched down in the Mons Rümker region of the northern Oceanus Procellarum of the Moon and returned 1.731 kg of lunar regolith. Recognizing exotic clasts (i.e., non-Chang ...

The Chang'e-5 mission touched down in the Mons Rümker region of the northern Oceanus Procellarum of the Moon and returned 1.731 kg of lunar regolith. Recognizing exotic clasts (i.e., non-Chang'e ...

Recognizing exotic clasts (i.e., non-Chang’e-5 locally derived materials) in the Chang’e-5 regolith could provide critical information about the lithological diversity and regolith gardening ...