Petrophysical Characterization of Non-Magnetic Granites; Density and Magnetic Susceptibility Relationships

In this work we establish reliable correlations between density and magnetic susceptibility in three paramagnetic granites from the Pyrenees. total, 128 sites (310 measurements >2600 ones) were studied Mont Louis-Andorra, Maladeta Marimanha granitic plutons covering main range of variability susceptibility. Regressions calculated for every body an integrated linear function was obtained entire dataset: ρ (kg/m3) = 2566 + 0.541κ (10−6 S.I.) (R:0.97). This relationship is only valid domain, where iron mostly fractioned iron-bearing phyllosilicates occurrence magnetite negligible (or at least its contribution to bulk susceptibility). relationship, likely different other bodies, allows transforming data into data, helping constrain gravity modelling when rock samples are scarce. Given large amount AMS studies worldwide, together with quickness cost-effectiveness portable devices, methodology densifying homogenizing petrophysical granite volumes based on both gravimetric signals.