31. It also occurs as a hydrothermal alteration product of corundum and nepheline. 32. Hydrothermal ore minerals typically form from high temperature aqueous solutions.33. It is a mineral in medium temperature hydrothermal vein deposits. 34. It occurs in hydrothermal veins alongside other nickel arsenide and sulfide minerals. 35. ANGUS provided the first photographic evidence for hydrothermal vents and black smokers. 36. Turbid water above the summit shows evidence of ongoing hydrothermal plume activity. 37. Late stage hydrothermal mineralisation has filled the joints with pectolite. 38. Cadmium tungstate nanorods can be synthesized by a hydrothermal process. 39. Gersdorffite occurs as a hydrothermal vein mineral along with other nickel sulfides. 40. Metabolism of organic compounds in anaerobic, hydrothermal sulfate-reducing sediments.
