I've seen sphene! (Sounds better than "the rock is tight with titanite")

Centimeter-size black sphene (titanite) with apatite (dark brown) and orthoclase feldspar (light brown). Folding pocket knife for scale.

From the Bancroft locality in Ontario, Canada. Grenville-aged (~1.2± billion years)
#MinCup24 #Titanite #Sphene #Bancroft #Ontario #Geology

RIP Steve Silberman.

His husband has announced his passing away at https://bsky.app/profile/wardqnormal.bsky.social/post/3l2uljphb2p2e

Very sad news. He was such a kind person and a great ally to #Autists. With a colleague we had a lovely chat with Steve during one of his visits to London in 2019: https://www.flickr.com/photos/acrostich/48127822607/

@actuallyautistic #stevesilberman #neurodiversity

Plain light thin section (~ 4 cm wide)
Pale pink garnets (inclusion-rich cores and inclusion-free rims) surrounded by mostly biotite.

From the Nuvvuagittuq formation near #Inukjuak Canada.

Coupled Sm-Nd isotopes suggest that the original rock (the protolith) may be as old as 4.3 billion years. This sample has been pervasively metamorphosed at least four times since then.

#ThinSectionThursday #Archean #Quebec

For nearly six days, water was accumulating behind a 30-metre-high debris accumulation deposited by a massive landslide across Chilcotin River.

The river reduced to a trickle.

But on Monday, the B.C. Interior finally got the alert they were waiting for.

https://thetyee.ca/News/2024/08/07/Disaster-Dodged-Chilcotin-River-Landslide/?utm_source=mastodon&utm_medium=social&utm_campaign=editorial