Learning and Practicing the Theory of Reworked Metallization—An Example from the Sandstone-Hosted Copper Deposits in Central Yunnan Province with Special Reference to the Defining of Upper and Lower Limits of the Reworked Metallization
The concept of “Reworked Metallization” is a new theory proposed by Prof. Tu Guangzhi. This theory has its basic arguments and distinctive characteristics as follows: the extensiveness of metallogenic material; the uniqueness of ore-forming fluids; the activity of the metallogenic elements; the endogenic characteristic of the reworked metallization; the leading role played by faulting; the diversity of the host rocks; the wide- spreading of the reworked deposits. Their metallization is unique and has a proper position in the four-fold division of ore deposits. Dayao-Mouding type of sandstone-hosted copper deposits in
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