Does anyone know of a way to estimate iron mineral proportions based on chemical data of sedimentary rocks (whole rock analysis)?

In my research results show that the rocks have SiO2 from 6.46 to 24.46 wt%, Al2O3 from 2.11 to 4.54 wt%, MnO from 3.82 to 11.68 wt% and CaO from 1.89 to 4.91 wt%. Other oxides are less than 1...

08 August 2017 705 13 View