Gold nuggets are naturally occurring pieces of native gold, typically found in alluvial deposits—loose sediments like riverbeds, stream beds, or gravel. Here’s a detailed look at them:
1. What Are Gold Nuggets?
Gold nuggets are lumps of gold formed by geological processes. They’re usually 70-95% pure gold, with the remaining content made up of silver, copper, or other metals. Unlike refined gold, nuggets maintain their natural shape and texture.
2. How Are They Formed?
Gold nuggets form through two main processes:
- Primary Formation: Deep underground, gold forms in quartz veins due to hydrothermal activity. Erosion then breaks the gold loose.
- Secondary (Alluvial) Formation: These freed pieces are transported by water and weathering. Over time, the movement and friction smooth them into nuggets.