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
USS Cinnabar (IX-163) was en route to Okinawa during the typhoon at sea 30 September to 2 October. On 9 October 1945 during Typhoon Louise she went aground at Baten Ko, Buckner Bay, Okinawa. She was stricken from the Naval Vessel Register on 3 January 1946, returned to her owner at Okinawa, and subsequently sold. USS Cinnabar (IX-163) USS "Cinnabar" (IX-163), a designated an unclassified miscellaneous vessel, was the only ship of the United States Navy to be named for cinnabar. Her keel was laid down in 1944. She was acquired on a loan-charter basis from the War Shipping Administration and placed in