Copper stratiform

Hitzman, M., Kirkham, R., Broughton, D., Thorson, J., Selley, D. 2005. The sediment-hosted stratiform copper ore system. Economic Geology 10Cf Anniversary Volume, 609-642. 

Zhangyan, China, 443 Copper-molybdenum deposits Tongshan, China, 441, 443, 444 Zhangyan, China, 446 Polymetallic deposits, 443 Xiaomaoshan, China, 442,445 Stratiform deposits Base-metal deposits... 

Drilling has delineated two major massive sulfide lenses in the Bent Hill area (Fig. 28). The Bent Hill Massive Sulfide HMS) deposit (Zierenberg et al. 1998) consists (from top to bottom) of 93 m of massive sulfide, 100 m of sulfide feeder or stringer veins in highly altered sediments, a stratiform deep copper zone of chalcopyrite and pyrrhotite in a totally altered sandstone, and basaltic lava flows and sills at about 500 mbsf An additional sulfide deposit, or possibly an extension of the BHMS deposit, occurs 400 m to the south at the ODP mound (Fig. 28). The ODP mound has an active 264°C hydrothermal vent on top (Butterfield et al. 1994a), three separate massive... 

Important copper deposits may also have been formed by conventional sedimentation on ancient sea bottoms without volcanic activity. In present times they appear stratiform, i.e. composed of layers in the rock. Large deposits of this type are characteristic of the so-called copper belt in Zambia and the Democratic Republic of Congo-... 

Boles JS, Crerar DA, Grissom G, Key T (1988) Aqueous thermal degradation of gallic acid. Geochim Cosmochim Acta 52 341-344 Boyle RW, Brown AC, Jefferson CW, Jowett EC, Kirkham RV (1989) Sediment-hosted stratiform copper deposits. Geol Assoc Can Spec Pap 36, 710 pp Branam TD, Ripley EM (1990) Genesis of sediment-hosted copper mineralization in south-central Kansas sulfur/carbon and sulfur isotope systematics. Econ Geol 85 601-621... 

Gustafson LB, Williams N (1981) Sediment-hosted stratiform deposits of copper, lead, and zinc. In Skinner BJ (ed) Economic geology. 75th Anniversary volume. Society of Economic Geologists, El Paso, TX, pp 139-178 Haberstroh PR, Karl DM (1989) Dissolved free amino acids in hydrothermal vent habitats of the Guaymas basin. Geochim Cosmochim Acta 53 2937-2945 Hall GA (1949) The kinetics of the decomposition of malonic acid in aqueous solution. J Am Chem Soc 71 2691-2693... 

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