The MVP causes hydrothermal alteration and can also transport metals in ore forming environments.
The ore forming fluids display prominent magmatic signature and were largely derived from deep domains, with probable input from the asthenosphere mantle.
Since the Pleistocene, substantial quantities of elements, both nutritional and toxic, that were involved in ore forming processes, have been remobilised and redistributed by surficial processes of intense tropical weathering, leaching, eluviation, podsolisation and gleying; and more recently, by mining and related processes, as well as by other urban and industrial activities.
In this way, ore formed, say, 1,800 million years ago had more primordial Pb and relatively fewer decay products compared with ores formed only 400 million years ago; this also includes Pb formed in the intervening 1,400 million years.
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Copper ores formed in pillow-bearing basaltic lavas of the Tethyan ocean floor; copper mines have been worked since antiquity in Cyprus, which lent its name to the element.
It is associated with magmatic-hydrothermal ore-forming processes triggered by deeply seated structures and concealed granites.
This information will find application in modelling gold ore-forming processes in vapour-bearing magmatic hydrothermal systems, notably those of epithermal environments.
Three oxide ore minerals form magmatic cumulates: chromite, magnetite, and ilmenite.
In contact mechanism, bacteria would adhere to ore and form a biofilm between bacteria and ore.
