Dataset Supporting "Physical and Chemical Distinctions Between In-situ Crystallized and Detrital Olivine"

This repository contains chemical and textural data underpinning the results presented in Dimarco Z. et al., Physical and Chemical Distinctions Between In-situ Crystallized and Detrital Olivine, a manuscript submitted to Journal of Geophysical Research: Planets. The multimodal characterization of terrestrial analogue samples included laboratory µXRF using an IXRF ATLAS X (IXRF Systems) housed at the Centre for Microscopy and Microanalysis, The University of Queensland. Pixel-wise µXRF element intensity data was extracted from chromite grains in each terrestrial analogue sample. The dataset comprises semi-quantitative elemental intensity measurements of Co, V, Ti, Cr, Fe, and Mn that were used for principal component analysis (PCA) of intra-grain geochemical variability. Quantitative textural data were generated using a multimodal image-fusion approach combining optical microscopy and AMICS-SEM mineral maps. Fused images were analysed in Fiji (Analyze Particles function). Resultant grain scale textural metrics for each sample are included in this repository.本数据集仓库包含支撑Dimarco Z.等人已投稿至《地球物理研究杂志：行星》（Journal of Geophysical Research: Planets）的论文《原位结晶与碎屑橄榄石的物理化学差异》中研究成果的化学与纹理数据。本研究针对地球类似物样本开展的多模态表征实验，采用了设于昆士兰大学显微与微分析中心的IXRF ATLAS X型实验室微区X射线荧光光谱（µXRF）设备（IXRF Systems公司制造）。研究人员从每份地球类似物样本的铬铁矿（chromite）颗粒中提取了逐像素的µXRF元素强度数据。本数据集包含钴（Co）、钒（V）、钛（Ti）、铬（Cr）、铁（Fe）以及锰（Mn）的半定量元素强度测量数据，这些数据被用于颗粒内部地球化学变异性的主成分分析（Principal Component Analysis，PCA）。研究人员采用结合光学显微镜与AMICS-SEM矿物图谱的多模态图像融合方法，生成了定量纹理数据。融合图像通过Fiji软件的Analyze Particles功能完成分析。本数据集仓库还收录了每份样本所得的颗粒尺度纹理特征指标。