ARMADILLO_MB: a user-friendly multiplatform ExcelTM spreadsheet for least-squares major elements mass balance regression analysis applied to magmatic systems

ARMADILLO_MB is a user-friendly ExcelTM spreadsheet to perform least-squares major element oxide mass balance regression analysis applied to igneous petrogenetic processes such as Rayleigh fractional crystallization (FC), cumulate formation, equilibrium batch melting (EBM), and assimilation (solid phase(s) and/or a third magma) coupled fractional crystallization. The novelty of ARMADILLO_MB is that it is written the old way, with cells directly hosting formulas containing built-in functions without VBA programming and macro-enabled worksheets. This design is conceived to enable rapid evaluation of models via copy-and-paste from the user’s own data tables, allow compatibility with several (current and earlier) versions of ExcelTM, and to prevent macro-security risk/block and to overcome conflict/incompatibility problems due to different processor architectures. This makes ARMADILLO_MB an easy-to-use multiplatform ExcelTM spreadsheet to help dig into igneous petrological processes.ARMADILLO_MB 是一款易于使用的ExcelTM电子表格工具，可针对火成岩成因过程开展最小二乘法主量元素氧化物质量平衡回归分析，此类过程包括瑞利分离结晶（Rayleigh Fractional Crystallization, FC）、堆晶形成、平衡批次熔融（Equilibrium Batch Melting, EBM），以及伴随分离结晶的同化作用（固相或第三种岩浆）。ARMADILLO_MB的创新之处在于其采用传统方式编写：单元格直接承载包含内置函数的公式，无需VBA编程且无需使用启用宏的工作表。该设计旨在支持用户通过从自有数据表中复制粘贴数据快速开展模型评估，兼容多款（当前及早期版本）ExcelTM软件，同时规避宏安全风险与拦截问题，并解决因不同处理器架构引发的冲突与不兼容问题。这使得ARMADILLO_MB成为一款易用的多平台ExcelTM电子表格工具，助力研究者深入探究火成岩石学过程。