BUSCADOR RECOLECTA

Anàlisis geoquímiques i fotos de visu i microscòpia de les mostres que integren la col·lecció de geostandards del Museu de Geologia Valentí Masachs (UPC Manresa). Análisis geoquímicas y fotos de visu y microscopio de las muestras que integran la colección de geostandares del Museo de Geología Valentí Masachs (UPC Manresa). Geochemical analyses and hand and microscopy pictures of the samples belonging to the geostandards collection of the Valenti Masachs Geology Museum (UPC Manresa). Analyses géochimiques et photographies au microscope et visu des échantillons qui forment la collection de geostandards du Musée de Géologie Valentí Masachs (UPC Manresa).

The dataset contains four files. File S1 corresponds to cathodoluminescence and BSE images of standard minerals. File S2 contains geochemical data of mineral standards ans samples obtained by SIMS and EPMA. File S3 contains the parameters used to obtain response surface models of IMF in mineral standards. File S4 is a response surface methodology tutorial., Instrumental mass fractionation (IMF) of isotopic SIMS analyses (Cameca 1280HR, CRPG Nancy) was predicted by response surface methodology (RSM) for 18O/16O determinations of plagioclase, K-feldspar and quartz. The three predictive response surface models combined instrumental and compositional inputs. The instrumental parameters were: (i) X and Y position, (ii) LT1DefX and LT1DefY electrostatic deflectors, (iii) chamber pressure and, (iv) primary-ion beam intensity. The compositional inputs included: (i) anorthite content (An%) for the plagioclase model and, (ii) orthoclase (Or%) and barium (BaO%) contents for the K-feldspar model. The three models reached high predictive powers. The coefficients R2 and prediction-R2 were, respectively, 90.47% and 86.74% for plagioclase, 87.56% and 83.17% for K-feldspar and 94.29% and 91.59% for quartz. The results show that RSM can be confidently applied to IMF prediction in stable isotope SIMS analyses by the use of instrumental and compositional variables.