Mineralogical Association of Canada

The May issue of CJMP flirts with controversy, and is not for the faint-hearted; make sure you're comfortably seated and adequately fortified first.To begin with, the assumption that euhedral-looking phenocrysts in a volcanic groundmass actually represent simple magmatic growth events, arguably the fundamental basis for the development of crystalliquid partition coefficient data (at least from natural systems), is questioned by Georg Zellmer and Toshiyuki Iizuka.They identify evidence of crystal fracturing, resorption, annealing, and overgrowths in phenocrysts in a variety of tectonomagmatic settings requiring microimaging to resolve.To properly put your digestion at risk, this paper is followed by a proposal by Louis Cabri and Andy MacDonald that the existing IMA classification of the platinum group mineral mertiete, a Pd-Cu-Sb-As compound, should be re-assessed and clarified, and that the discrepancy between IMA-approved names and compositions and structures and those in usage subsequently have become problematic.More comfortingly, Bob Martin and Dirk Schumann investigate the relationship between marble coloring, anatectic carbonate melts, fluorapatites, and fenites from the Central Metasedimentary Belt of the Grenville Province in Ontario; and Lee Groat and colleagues from the west coast of North America (British Columbia and California), plus the Czech Republic, assess the provenance of an emerald cabochon gem found in Sicily, a probable remnant from a ruin, from which its origins and relevant trace routes are surmised based on geochemistry and inclusions.If you only think of the Roman Empire once this year, make this article that moment.One new mineral is also identified in this issue, a uranyl selenite from Colorado, amurselite, by researchers from California and Pennsylvania.The combination of ammonium and uranium oxide is particularly intriguing.The name is a portmanteau of the first two letters of the dominant ions, ammonium, uranyl, and selenite.Our recently most-read publications, according to GeoScienceWorld, show interest in tourmaline waning somewhat, replaced by our featured article on crystal fragmentation, comfortably in first place: Crystal Fragmentation Inducing Euhedral Crystal Habits in Volcanic Rocks: Fracture Histories of Crystals from Various Tectonomagmatic Settings and Implications for Plumbing System Processes, by Georg Zellmer and Yoshiyuki Iizuka, up from third place where it was available online since May 2025.A surprising dark horse in second place is Virgilluethite: A New Mineral and the Natural Analogue of Synthetic β-MoO 3 •H 2 O, from Cookes Peak, Luna County, New Mexico, USA, from Hexiong Yang, Xiangping Gu, Ronald Gibbs, and Robert Downs, from CJMP volume 61(3), from 2023, representing a resurgent interest in molybdenum.These are followed by our long-standing chart-toppers, Recognizing Tourmaline in Mineralized Porphyry Cu Systems: Textures and Major-Element Chemistry, and now in a distance second place, Trace Element Characteristics of Tourmaline in Porphyry Cu Systems: Development and Application To Discrimination, both by Christopher Beckett-Brown, Andrew McDonald, and Beth McClenaghan.These both appear in volume 61(1) from 2023 CJMP.

Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.