VPRS 19143 Assay Reports

This series contains the reports of assaying undertaken by the laboratories of Geological Survey Victoria (VA 4118) and the Mines Department (VA 612). An assay is a chemical analysis used to determine the proportion of metallic (gold, silver, copper, etc.) or non- metallic (sulphur, phosphorus, etc.) elements in a sample. It is also used to determine the quality and purity of the ore or precious metal and identify pollutants or impurities. Geological samples were collected by individuals, businesses, or government departments from sites across Victoria, and included brown and black coal, quartz, tailings, bore water, mine air, rock, silt, and clay. Each report includes details of who submitted the sample for examination, the location where sample was obtained (e.g. Parish, mine or general locality) and a description of the sample. This was followed by the Laboratory Report containing the findings and results of the chemical testing, such as amount of gold, silver or other ores contained in the sample, and of which a copy was sent to the initial submitter of the sample. Assay sample testing was the responsibility of the Geological Survey of Victoria (VA 4118) and was undertaken by different public bodies over the period of this series. Reports of 1930-1933 were completed by the Geological Survey Laboratory, Mines Department (VA 612) before changing to the State Laboratories from 1932-1967. Reports from 1968 were completed by the Mines Department Chemical Branch until 1977 when the department was amalgamated with the Ministry of Fuel and Power in 1977 to become the Department of Minerals and Energy (VA 611). In 1983, the Chemical Branch of the Department of Mineral and Energy then amalgamated with other state chemical branches to form the State Chemistry Laboratory (VA 2829) within the Department of Agriculture (VA 618).本数据集系列包含维多利亚地质调查局（Geological Survey Victoria，VA 4118）与矿产部（Mines Department，VA 612）实验室所出具的化验报告。化验（assay）是一种化学分析方法，用于测定样本中金属（金、银、铜等）或非金属（硫、磷等）元素的占比，同时可用于评估矿石或贵金属的品质与纯度，以及识别污染物或杂质。本次数据集涵盖的地质样本由个人、企业或政府部门从维多利亚州各地采集，样本类型涵盖褐煤、黑煤、石英、尾矿、钻孔水、矿井空气、岩石、粉砂与黏土。每份报告均包含送检方信息、样本采集地点（如教区、矿区或通用区域）以及样本描述；随后附上实验室报告，载明化学检测的结果与结论，例如样本中金、银或其他矿石的含量，该报告副本将发送给最初的样本送检方。化验样本的检测工作最初由维多利亚地质调查局（VA 4118）负责，在本数据集覆盖的时间段内，检测任务由不同公共机构承接。1930年至1933年的报告由矿产部地质调查实验室（VA 612）出具；1932年至1967年，检测工作转由州立实验室承接。1968年至1977年的报告由矿产部化学分支部门出具；1977年，该部门与燃料与动力部合并，组建为矿产与能源部（VA 611）。1983年，矿产与能源部的化学分支部门与其他州立化学分支部门合并，于农业部（VA 618）框架下组建州立化学实验室（VA 2829）。