The isotope geochemistry database contains geochronology and geological process data managed by the Geological Survey of NSW (GSNSW). Isotopic systems / techniques are U/Pb, K/Ar, Ar/Ar, Rb/Sr, Pb/Pb, Re/Os, Sm/Nd, Lu/Hf and stable sulfur, carbon, oxygen and hydrogen. The database stores location and sample collection information, lithological description, analytical and interpretation information for geological samples in New South Wales. The database includes links to stratigraphic unit, mineral occurrence and drill hole data. Some fields are controlled by look up tables.

Projects that have a JORC equivalent resource, have completed a pre-feasibility study and have commenced the approval process with the NSW Department of Planning.

Operating mines in NSW is a small subset of sites taken from the NSW Mineral Occurrence dataset which represent an active mining operation. An operation is a deposit or group of deposits of similar style within the same district, operated by a common operator. Generally an operation will have a single common processing plant. An operation is considered to be ‘operating’ (active mine) if ore is being produced and a royalty paid from at least one of its deposits. The Operating status of each deposit is maintained in the MetIndex database and based on the following definition. Operating Mines Layer: For the purpose of an operating mines layer for metallic minerals, an operating mine is a mining operation where production is on a continuous or intermittent basis. Operation: An Operation is a deposit or a group of deposits of a similar style within the same district, operated by a common operator. Generally an operation will have a single common processing plant. Operating status: Operating status is continuous where there is reported production at least twice in a 12 month period, operating mines with less reported production are classified as intermittent.