Mineralogical Society of America

Dear MSA Members:

It's Renewal time! Membership dues are the same as last year.

Thank you for renewing and for your ongoing support for MSA. You can renew on the MSA website home page at msaweb.org.

American Mineralogist:
In situ U-Pb chronology and chemistry of zirconolite in the andesitic meteorite Erg Chech 002
Jun Sakuma, Hisashi Asanuma, Akira Yamaguchi, Naoto Takahata, Tsuyoshi Iizuka

doi.org/10.2138/am-202…

Please contribute to Thin Section Thursday! I am almost out of images, and may have to end this popular feature. Send image(s) and short explanation to akoziol1 at udayton dot edu. #thinsectionthursday

Thin Section Thursday! A transmitted light image of a MORB (mid-ocean ridge basalt) from the Gorda Ridge. A plagioclase ultraphyric basalt.
Contributed by Dr Roger L Nielsen.
See: Hewitt et al. (2025) doi.org/10.1029/2024GC…
#thinsectionthursday

American Mineralogist:
Tantalaeschynite-(Ce), a new Ta-dominant member of aeschynite-group from Ta-enriched pegmatite at Huangshan, South China
Zeying Zhu, et al.
Tantaleaschynite-(Ce) is ideally Ce(TiTa)O6.
doi.org/10.2138/am-202…