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Where are the gold mines located?


Gold deposits can occur in almost any rock type and formation of any age, but the Precambrian greenstone belt is the most important. The mineralization types of gold are: greenstone belt type (including basic and ultrabasic rocks), volcanic rock type, porphyry type (including alkaline rock and granite), turbidite type, black rock series type, glutenite type , fluvial sediment type; according to the genetic type, it can be divided into quartz vein type, sulfide vein type, micro-disseminated type, structural altered rock type, iron-manganese cap type, laterite type, etc.

1. Silicification zone, quartz vein, secondary quartzite. This is because gold mineralization is closely related to silicidation, and it can be said that gold cannot be made without silicon. Of course not all siliceous bodies produce gold, but most of the siliceous bodies containing gold are smoky gray and have a good water color. This is because the siliceous bodies containing gold contain more or less sulfides, and because the sulfides are extremely fine, the quartz is smoky gray. In particular, the lamellar quartz veins (which can contain multiple black bands such as a mixture of carbon and fine-grained sulfides) have good gold content. Even in the clear gold type quartz veins with less sulfide, there are often sulfides such as stibnite, bismuthite, wheel ore, arsenopyrite, and caviar lead-zinc ore when gold ore packages appear.

2. Pay attention to fault structural zones, especially ductile shear zones. Gold mineralization is all related to fractures, and it can be said that all forms of gold cannot be formed. In particular, pay attention to ultra-mylonite, mylonite, microsaccharide-like quartzite, and talc-magnesite schist, which are often the location of gold-rich ore bodies. The gold content of the giant to large fault zone itself is often poor, and the secondary fault zone on the side is often the production part of the gold ore body.


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