23 Cyprus type: associated with tholeiitic basalts in ophiolite sequences copper rich withgold. e.g. Troodos Massif (Cyprus). Besshi-type: associated with volcanics and continental turbidites, copper/zinc with gold and silver.e.g. Sanbagwa (Japan). Kuroko-type: associated with felsic volcanics particularly rhyolite domes copper/zinc/lead with gold and silver, e.g. Kuroko deposits (Japan).
24 Ophiolites are pieces of oceanic plate that have been thrusted (obducted) onto the edge of continental plates. They provide models for processes at mid-ocean ridges.
25 Ophiolites are thought to represent slices of oceanic crust that have been thrust or obducted onto a continental margin during collision. They are characterised by a sequence of rock types, consisting of deep sea sediments overlying basaltic pillow lavas, sheeted dykes, gabbros and peridotites.
28 Podiform chromite deposits are irregular but fundamentally lenticular chromite-rich bodies that occur within Alpine peridotite or ophiolite complexes. Thus, they generally occur in orogenic settings.
41 MASTER LIST OF ALL DEPOSIT GROUPS A - OrganicB - Residual/SurficialC - PlacerD - Continental Sediments and VocanicsE - Sediment-HostedF - Chemical SedimentG - Marine Volcanic AssociationH - EpithermalI - Vein, Breccia and StockworkJ - MantoK - SkarnL - PorphyryM - Ultramafic / MaficN - CarbonatitesO - PegmatiteP - Metamorphic-hostedQ - Gems and Semi-precious StonesR - Industrial RocksS - Other
42 Genetic Classifications of Mineral Deposits Syngenetic depositslayered mafic intrusion type depositsvolcanogenic massive sulphide depositssedimentary massive sulphide depositsplacer depositsEpigeneticporphyry depositsskarn depositspegmatitic depositshydrothermal deposits
43 Classifications Based on Geological Processes Hydrothermal/Pegmatitic mineral deposits form in association with hot water- or gas-rich fluidsMagmatic mineral deposits concentrated in igneous rocks;Metamoprhogenic mineral deposits concentrated by metamorhism / metasomatismSedimentary mineral deposits are precipitated from a solution, typically sea water;Placer minerals are sorted and distributed by flow of water (or ice);Residual mineral deposits formed by weathering reactions at the earth's
44 Classifications Based on Host Lithology Unconsolidated DepositsSedimentary RocksVolcanic RocksIntrusive RocksRegionally Metamorphosed Rocks