### Mineral Formulae Recalculation - SERC

Excel spreadsheets for calculating mineral formulas for specific minerals are collected here. Generic Formula Spreadsheet (Excel 25kB Mar21 08)--Use this version if Fe +3 analyses are available, or if FeO = FeO total (ignoring the possibility of presence of Fe +3); normalize to oxygen per formula unit for the mineral of interest. Another mineral formula recalculation (Excel 180kB Jan27 10