Retrieving "Dilation Structure" from the archives

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1. Ore Deposits

   Linked via "dilation structures"

   While metamorphism rarely creates primary concentrations, it can remobilize and recrystallize existing minerals into economically viable bodies.
   Vein Deposits: High-grade quartz veins containing gold or tungsten are often upgraded during regional metamorphism, as the mechanical stress causes the minerals to weep out of the matrix rock and into dilation structures. The purity of the resulting quartz is …