vein minerals form between faults.
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These will form reverse or thrust faults.
Zeolite is actually not a mineral, but the name of a large group of minerals, that are silicates with framework structures containing open cavities in the form of channels and cages. This framework makes them excellent filters with a multitude of uses. A few common zeolite minerals are analcime, chabazite, and heulandite. Zeolites of the World by Tschernich is the best reference on these minerals.
right after the poor kids group formed, but before the middle class group formed.
Fractional Crystallization
Lichens are an important part of the Earth. They help form soil by breaking apart rocks with oxalic acid to use the minerals for themselves.