Thin Section Thursday! Plane light photomicrograph of a lawsonite eclogite, showing several stages of metamorphism. Contributed by Donna Whitney. You can contribute too! Send images and a short caption to akoziol1 at udayton dot edu. #thinsectionthursday #lawsonite #eclogite

American Mineralogist: Analcime-wairakite formation during experimental cement-bentonite alteration at 200–300 °C Amber Zandanel, et al. doi.org/10.2138/am-202… Relates to assessing the resiliency of spent nuclear fuel repository design concepts.

Mineral Monday: Mineral Museums by Gottlob. Full post is on Instagram: instagram.com/p/DMXvc8MMMxC/… #MineralMonday #MSACommunications #mineral #mineralmuseum

Structural mechanisms of pressure-induced isosymmetric second-order phase transitions Qifa Zhong, et al. doi.org/10.2138/am-202… Pressure-induced polymorphic phase transitions play a pivotal role in fundamental physics and chemistry.

American Mineralogist: Correlations between the structural and impurity features revealing fluctuant growth conditions of natural fibrous diamonds Chengyang Sun, Mingyue He, Taijin Lu, Shinji Muraishi, Yi Deng doi.org/10.2138/am-202…

Sillimanite; rutile; garnet; biotite; and somewhat altered plagioclase. XP: garnet is black, sillimanite is gray, and feldspar shows some exsolution. Contributed by Matt Kohn. You can contribute: Send images & short caption to akoziol1 at udayton dot edu. #thinsectionthursday

American Mineralogist: A machine learning-based approach using clinopyroxene data to improve accuracy and efficiency in predicting tectonic settings: Implications for Rodinia supercontinent breakup triggered by mantle plume events Hengxu Li, et al. doi.org/10.2138/am-202…

Mineral Monday: Stibnite (Sb₂S₃): From Ancient Mineral to Modern Photovoltaic Material By Aaron Celestian #MSACommunications #MineralMonday #mineralogy #materialscience #photovoltaics #semiconductors #crystallography #stibnite #renewableenergy #thinfilmsolar

Dear MSA Members: Please check your email for an important message about the MSA elections. Deadline: Aug. 15 2025. Thanks! Not a member of MSA? Would you like to join? Please see msa.minsocam.org/membership.html for information.

American Mineralogist: Effect of layer charge density and charge location on the swelling of smectite: Implications for geological storage CO2 and high-level nuclear waste Paolo Andre Benavides, Stephen Guggenheim doi.org/10.2138/am-202…

American Mineralogist: Mineralogical characterization of the Seffner fulgurite, Florida: Insights into lightning-induced petrogenesis Luca Bindi, Marta Morana, Matthew Pasek, Tiziano Catelani doi.org/10.2138/am-202…

Thin Section Thursday! Colorless plag and brown to orange hnbl. But opx occurs in the SW quadrant. XP: the hnbl has colorful interference colors, while the opx and plag are gray to white. Contributed by Matt Kohn. #thinsectionthursday contribute: akoziol1 at udayton dot edu.

American Mineralogist: The valence states of Nb and Ta in magmatic-hydrothermal systems: Insights from combined SXAS and XPS analyses of titanite and ilmenite in two Chinese anorogenic suites Yuxiang Zhu, et al. doi.org/10.2138/am-202…

Mineral Monday: The Handbook of Mineralogy on MSA’s Website Where can you find quick and handy information on 5,663 minerals, both common and rare? In the Handbook of Mineralogy of course. It is available on the MSA website (handbookofmineralogy.org).

American Mineralogist: Hoperanchite, (NH4)2(S2O3), a new mineral from an active vent in a burning bituminous shale Anthony Kampf, et al. doi.org/10.2138/am-202… Hoperanchite (IMA2024-017) is the first thiosulfate mineral that does not contain essential Pb.

August American Mineralogist: Morphological approach to understanding mineral alteration and nanoparticle formation under alkaline conditions using granitic rock thin sections Eungyeong Kim, Sung Pill Hyun, Ho Young Jo doi.org/10.2138/am-202…

Let’s revisit some images sent to me previously by Cody Steven. PLM photomicrograph in XPL of a metaperidotite from western Idaho. Clinochlore is mantled by 2-layer antigorite, and overprints elongate olivine crystals. FOV is 2mm. #thinsectionthursday

American Mineralogist: Viscosity measurements of selected lunar regolith simulants Simon Stapperfend, Donald Dingwell, Kai Hess, Jennifer Sutherland, Axel Müller, Dirk Müller, Michael Eitel, Julian Baasch, Stefan Linke, Enrico Stoll doi.org/10.2138/am-202…

Mineral Monday: Mineralogy for Kids on the MSA website Here is a resource for the younger members of your family: Mineralogy4Kids, available on the msaweb.org website at: min4kids.org. #MSACommunications #MineralMonday #mineralogy4kids #mineralproperties

American Mineralogist: Nanoscale characterization of chrysocolla, black chrysocolla and pseudomalachite from supergene copper deposits of Atacama Desert of northern Chile Zia Steven Kahou, et al. doi.org/10.2138/am-202… #chrysocolla #TEM