New Almaden hydrothermal deposition of cinnabar from deep within the earth is found in a gangue of silica-carbonate rock formed locally by hydrothermal alteration of serpentine. The Guadalupe mine produced about 10% as much mercury as the New Almaden. There are several smaller mines in the mining district, but their ore production was not significant. The only significant quicksilver ore is cinnabar; other sulfides are present in small quantities. Mining, other than a single placer deposit of cinnabar, was underground. There is a high probability of undiscovered high-grade ore which could be found and exploited using modern techniques. Mining operations resulted in
MS Ore Brasil MS Ore Brasil MS "Ore Brasil, previously known as Vale Brasil", is a very large ore carrier owned by the Brazilian mining company Vale. She is the first of seven 400,000-ton very large ore carriers (VLOC) ordered by Vale from Daewoo Shipbuilding & Marine Engineering in South Korea and twelve from Jiangsu Rongsheng Heavy Industries in China, which are designed to carry iron ore from Brazil to Asia along the Cape route around South Africa. While close to the specifications of Chinamax, these ships are generally referred to as "Valemax" vessels by Vale. They are the largest bulk carriers ever