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fissure vein
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fissure vein

geology
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Quick Summary

A fissure vein is a geological formation where a crack in the Earth's crust is filled with minerals deposited from a solution. These veins are tabular, meaning two dimensions are significantly larger than the third. They form in two stages: first, a fissure opens, and then it is filled with mineral deposits. Fissure veins are a type of ore body found within unwanted rock or minerals, often referred to as gangue.12

There are several varieties of fissure veins, including simple, chambered, dilation, sheeted, and composite types, distinguished by the shape and arrangement of their walls and the fissures they occupy.2

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