Vein (geology) - Wikipedia
In geology, a vein is a distinct sheetlike body of crystallized minerals within a rock. Veins form when mineral constituents carried by an aqueous solution within the rock mass are deposited through precipitation .
Veins and Hydrothermal Deposits – Geology In
Veins are mineral deposits which form when a preexisting fracture or fissure within a host rock is filled with new mineral material. The deposition of minerals is typically performed by circulating aqueous solutions.
Vein | Vein Mining, Ore Extraction, Geology | Britannica
vein, in geology, ore body that is disseminated within definite boundaries in unwanted rock or minerals (gangue). The term, as used by geologists, is nearly synonymous with the term lode, as used by miners. There are two distinct types: fissure veins and ladder veins.
Veins - ALEX STREKEISEN
Veins are dilated fractures filled with oriented crystal fibers or non-oriented mineral deposits (typically quartz, calcite or carbonates). Veins occur in rocks of all types and metamorphic grades with thickness from less than a millimeter to several meters.
A review of the formation of tectonic veins and their microstructures ...
Oct 1, 2012 · Veins are common features in rocks and extremely useful structures to determine stress, strain, pressure, temperature, fluid composition and fluid origin during their formation. Here we provide an overview of the origin and terminology of veins.
Vein deposits - Geology Science
Apr 23, 2023 · Vein deposits are a type of mineral deposit that consist of a localized zone of fracture-filling minerals. They typically form within fractures or fissures in rock and are often found in or near fault zones, where rocks have been fractured and deformed.
Geology Fundamentals – Veins, Dikes and Sills
May 20, 2013 · Veins are very different; they are the crystalline product of aqueous solutions and occur in a wide variety of geologic settings and wide variety of temperatures. However, both veins and dikes/sills are found in the same settings, around intrusions and/or adjacent to …
Vein types and their structures are divided into three categories: 1. macroscopic morphology (e.g. sigmoidal vein), 2. microscopic morphology (e.g. fibrous, blocky, etc.),
Review article A review of the formation of tectonic veins and their ...
Oct 1, 2012 · Veins are common features in rocks and extremely useful structures to determine stress, strain, pressure, temperature, fluid composition and fluid origin during their formation. Here we provide an overview of the origin and terminology of veins.
Polymetallic vein and replacement deposits are characterized by elevated abundances of Pb-Zn±Cu±Au±Ag±Mo±As ± Bi±Sb. In some districts, ore proximal to igneous intrusions is copper and gold rich, and grades laterally (and sometimes vertically) into lead-zinc-silver-rich ore. A distal, manganese-enriched zone is present in some districts.
- Some results have been removed