As the fluids cool, they deposit minerals, such as gold, silver, copper, lead, and zinc, into the veins.
[2] EVP are typically small in size, but they can be very high-grade, meaning that they contain a high concentration of valuable minerals.
[5] Examples of notable LSE deposits include the Carlin Trend in Nevada, USA, renowned for being one of the largest gold deposits globally, the Cripple Creek district in Colorado, USA, historically recognized for its gold and silver production, and the Guanajuato district in Mexico, a significant producer of silver since the 16th century.
However, their allure lies in the high concentration of valuable metals, especially gold and silver, making them attractive targets for mining companies.
The boiling of hydrothermal fluids, triggered by a decrease in pressure as they ascend closer to the surface, is a key factor in their formation, crucial in concentrating gold and silver.