What is the difference between alluvial and deep reef Gold?

Alluvial gold is found in sedimentary deposits, typically in riverbeds or floodplains, where it has been eroded from its original source and accumulated over time. Deep reef gold, on the other hand, is extracted from hard rock formations deep underground, often requiring more complex mining techniques. While alluvial gold is generally easier to mine, deep reef gold deposits can be more substantial and require significant investment in technology and infrastructure for extraction.