Test category: CL imaging Test target: epoxy disc for minerals or mineral thin section Test period: 5-10 work days Requirements: the polishing surface is smooth without scratches and the arrangement is neat. Completion standards: The light and shade are suitable, the zircon zoning is clear Tips: Samples with smaller grains need to be magnified more than 200 times, and there is a blurring situation. Due to the limitation of zircon luminescence, a small number of samples cannot obtain clear zoning. Advantages: Our technicians have experience in LA-ICP-MS operation, understand test requirements, and adjust imaging parameters for each epoxy disc according to the actual situation of the sample.