X-ray diffraction patterns of mineral phases: amethyst (quartz), graphite, and calcite

This dataset contains raw X-ray diffraction (XRD) patterns of mineral phases: amethyst (quartz), graphite, and calcite. The data were acquired using powder X-ray diffraction equipment D8 Bruker Advance, with Cu Kα radiation over a 2θ= 10-90° range. Amethyst and graphite were collected with step size of 0.03° and time step of 0.5 s; calcite was measured with step size of 0.04° and time step of 0.5 s.

This dataset is intended to serve as a reference resource for mineral identification, teaching applications, and validation of diffraction-based methodologies. The data are provided without prior processing.

本数据集包含以下矿物物相的原始X射线衍射（X-ray Diffraction, XRD）谱图：紫晶（石英）、石墨与方解石。该数据集采用布鲁克D8 Advance型粉末X射线衍射仪采集，辐射源为Cu Kα射线，测试的2θ扫描范围为10°~90°。其中，紫晶与石墨的测试步长为0.03°，每步采集时长为0.5秒；方解石的测试步长为0.04°，每步采集时长为0.5秒。
本数据集可作为矿物物相鉴定、教学应用以及基于衍射的分析方法验证的参考资源，所有数据均以原始未处理状态提供。