American Mineralogist, the journal of the Mineralogical Society of America (MSA), publishes the results of original scientific research in the general fields of mineralogy, crystallography, geochemistry, and petrology. Specific areas of coverage include, but are not restricted to, igneous and metamorphic petrology, experimental mineralogy and petrology, crystal chemistry and crystal-structure determinations, mineral spectroscopy, mineral physics, isotope geochemistry, major and trace element geochemistry, planetary material science, clay minerals, mineral surface science, geochemistry of mineral-fluid systems, environmental mineralogy, biomineralization, geomicrobiology, new minerals and mineral occurrences, petrography and petrogenesis, ore deposits, and mineralogical apparatus and techniques.