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The Guanajuato Mining District, Mexico: This district has been mined for centuries and is known for its high-grade epithermal veins containing gold and silver. [11] The Baguio Mineral District, Philippines: This district is home to numerous epithermal vein deposits, including the Acupan Mine, one of the largest gold mines in the Philippines. [12]
White veins in dark rock at Imperia, Italy. 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. The hydraulic flow involved is usually due to hydrothermal circulation. [1]
The miner's cap (German: Fahrhaube) is part of the traditional miner's costume. It consists of a white material (linen) and served in the Middle Ages to protect the miner when descending below ground ( unter Tage ).
Hydrothermal vein ore deposits consist of discrete veins or groups of closely spaced veins. Veins are believed to be precipitated by hydrothermal solutions travelling along discontinuities in a rockmass. [10] They are commonly epithermal in origin, that is to say they form at relatively high crustal levels and moderate to low temperatures.
At work, the miner of the Middle Ages in Europe wore the normal costume for his local region – pit trousers (Grubenhose), shoes and miner's jacket (Bergkittel).. Only gradually was the typical miner's uniform created by the addition of unmistakable elements of miner's apparel such as the miner's apron (Arschleder), knee pads (Kniebügel), miner's cap (Fahrhaube or Fahrkappe, later pit hat ...
A bump cap is a lightweight hard hat using a simplified suspension or padding and a chin strap. Bump caps are used where there is a possibility of scraping or bumping one's head on equipment or structure projections but are not sufficient to absorb large impacts, such as that from a tool dropped from several stories.
The Mooskappe is an old, traditional miners head covering. It was intended to protect miners when working underground from the impact of small rockfalls and from hitting their heads against the gallery roof (Firste). The term is German and this type of hat was worn especially in the Harz Mountains of Germany. [1] [2]
The term "minette" came from French miners. It is a diminutive form of "la mine", and might be translated as "little mine, little colliery" or "little vein", referring to its relatively poor iron content of between 28% and 34%. [2] In other uses, "minette" is also an archaic rock term used to locally describe a particular type of lamprophyre. [2]
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