Gossan (eiserner hut or eisenhut) is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein. In the classic gossan or iron cap all that remains is iron oxides and quartz, often in the form of boxworks (which are quartz-lined cavities retaining the shape of the dissolved ore minerals).

Gossans are the signposts that point to what lies beneath the surface. Gossans are exceedingly ferruginous rock, which is the product of oxidation by weathering and leaching of sulfide mineralization.

gossan, rust-coloured oxide and hydroxide minerals of iron and manganese that cap an ore deposit. Gossans form by the oxidation of the sulfide minerals in an ore deposit and they thus may be used as clues to the existence of subsurface ore deposits, especially if …

2018年6月15日 · Formation model of massive sulfide deposits associated with plate tectonics in the Central Pontides. The upper right corner shows local position of the arch and lower right corner shows evolution order and orientation of movement and sedimentation of alkaline (magmatic) front [16.

2001年6月1日 · The mature gossan profiles are characterised by the upward progression from supergene sulfides to secondary sulfates, carbonates and phosphates into a Fe-oxide dominated surficial capping which may contain boxwork textures after the original sulfides (as at the Woodlawn massive sulfide deposit).

Gossans are the normal end products of oxidation and leaching of iron-bearing sulfide deposits exposed to the surface environment by erosion. The principal oxidizing agent is atmospheric oxygen and the leaching is accomplished by descending ground waters of meteoric origin.

An iron and manganese-bearing weathered product overlying a sulphide deposit. It is formed by the oxidation and leaching-out of sulphides and carbonates, with the loss of the sulphur and most metals, leaving hydrated iron oxides (limonite, hematite etc.) and manganese oxides, quartz and relatively insoluble minerals. Also spelled gozzan.

2020年11月1日 · In order to investigate physicochemical processes related to the evolution of the gossan cover and the supergene gold enrichment, we present mineralogical, textural and geochemical data from each zone of twenty gossan profiles in the Buracão area.

2018年6月4日 · Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein. In the 19th and 20th centuries, gossans were important guides...

Gossan refers to the rust-colored capping or staining of a mineral deposit, which is mostly formed due to the oxidation or alteration of iron sulfides. Gossan generally appears as a red stain against the background rock and soil, due to the presence of a large quantity of oxidized iron.