Mining investment refers to the allocation of capital toward mineral exploration, project development, operational expansion, or the acquisition of mining assets and companies, undertaken by a range of investor types including mining companies themselves, private equity and venture capital funds, institutional and retail equity investors, debt providers, sovereign wealth funds, and specialized streaming and royalty companies. Mining investment decisions are shaped by a combination of factors including the long-term outlook for relevant commodity prices and demand, geological and technical project risk, geopolitical and country risk, regulatory and permitting considerations, and increasingly, environmental, social, and governance criteria. Investment can take the form of greenfield exploration funding aimed at new discovery, brownfield investment in expanding or extending the life of existing operations, or merger and acquisition activity involving the purchase of existing producing assets or development-stage projects. Given the four commodities covered in this glossary, investment patterns differ; gold investment is often counter-cyclical, attracting capital during periods of macroeconomic uncertainty, while iron ore and bauxite investment tends to track global steel and aluminum demand cycles, and diamond investment has historically been concentrated among a smaller number of major producers due to the specialized marketing and sales channels required.