From Barb Dutrow, LSU:
...we announce the passing of a metamorphic petrology legend, Michael J. Holdaway on March 21, 2025, at 89 years.

Mike is perhaps best known for his meticulous experiments on the Al2SiO5 system and for developing the andalusite weight loss method for determining reaction direction. At Southern Methodist University his work provided experimental constraints on the triple point of the polymorphs for the first time.
#Metamorphic #ExperimentalPetrology #Geoscience #Mineralogy

Mac Rutherford (Professor Emeritus of Geological Sciences, Brown University) has passed away

Excerpts from Julie Hammer’s announcement on the MSA listserv:

Mac developed an experimental phase equilibrium approach to constrain magma conditions prior to eruption.

He also studied the solubility and speciation of sulfur in magma, mineral barometry, & the kinetics of crystal nucleation & growth.
 
Shared LinkedIn page:
https://www.linkedin.com/posts/venezky_i-write-with-sad-news-which-may-or-may-not-activity-7115486557502902272-UuI_?
#minerals #geology #ExperimentalPetrology #BrownU

Thank you Ananya Mallik (@DrRockChef), the MSA Distinguished Lecturer, for a great visit today, speaking on: "How hot and wet is the Moon? Insights and challenges"

#UArizona #McGillUniversity #EarthSystemScience #Moon #ExperimentalPetrology