Mining stocks can generally be divided between the majors and juniors. The majors are typically mining companies that operate producing mines on a global scale and have proven methods for consistent output year over year. Junior mining stocks, on the other hand, are usually smaller companies and take on risky mining exploration. If a junior mining stock is successful at finding a mineable mineral deposit, it can mean huge returns for investors. Junior mining stocks offer the investor with the potential for significant growth, given the speculative nature of the investment. Junior mining also comes with higher risk.