The mineralogy hidden in your assays with Scott Halley

<p>This month on GeOCHemISTea, Sam sits down with Scott Halley to talk about extracting meaningful mineralogy from standard four-acid assay data. Scott walks through how the classic MINSQ approach evolved into modern linear-programming methods that handle solid solutions, honor thermodynamics, and produce fast, first-pass mineralogy models.</p><p>They also dig into ambiguity in geologic interpretation, “cognitive entrenchment” in porphyry systems, and how linking calculated mineralogy to rock physics is helping bridge the gap between geochemistry and geophysics.</p><p><strong>For this episode we read: </strong><a href="https://www.researchgate.net/publication/237823509_MINSQ_-_a_least_squares_spreadsheet_method_for_calculating_mineral_proportions_from_whole_rock_major_element_analyses" target="_blank" rel="noopener">MINSQ - a least squares spreadsheet method for calculating mineral proportions from whole rock major element analyses (Herrmann and Berry, 2002)</a></p>