How to detect natural gold minerals

- Dec 24, 2019-

Natural gold minerals can hardly be identified directly in the wild, because few are visible to the naked eye. So finding gold is basically an indirect method.


The following is a more professional way to find gold for reference.

1. First, we should pay attention to silicidation zone, quartz vein, and secondary quartzite. This is because gold mineralization is closely related to silicidation, and it can be said that no silicon does not form gold. 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 all contain more or less sulfides. Because the sulfides are extremely fine, quartz is fumed with gray. In particular, sheet-like quartz veins (which may contain multiple black bands such as a mixture of carbonaceous and fine-grained sulfide) have good gold content. Even the sulphide-free gold-gold quartz veins often have sulfides, such as antimony ore, bismuth ore, wheel ore, poisonous sand, caviar lead-zinc ore, when a gold ore bag appears.


2. Focus again on faulted structural zones, especially ductile shear zones. All gold mineralization is related to fracture, and it can be said that there is no formation of gold. In particular, we should pay attention to super mylonite, mylonite, micro-sugar-like quartzite, and talc magnesite schist, which are often the gold-rich ore bodies. Giant to large faults often have poor gold-bearing properties, while secondary faults on the side are often the sites where gold ore bodies are produced.


3. Thirdly, pay attention to the determination of gold content of iron caps, brown-red, brown-yellow residual slope deposits, and carbonate deposits. Not only can they become iron-hat-type, laterite-type gold ores, but they can also indicate the search for primary gold ores.


4. Fourth, we should pay attention to finding gold in antimony, mercury, and arsenic (especially realgar and female yellow ore) areas. As far as antimony ore is concerned, it can coexist with gold to form an antimony gold deposit; it can also be separated, but Not far away, so there is a saying "not in it, not leave it". Gold can also be found on the periphery of some lead-zinc deposits, such as the periphery of the Qingchengzi lead-zinc deposit; the lower part of copper deposits. The alteration zone of copper-nickel sulfide deposits is also a good place to find gold.


5. In addition to silicification related to gold mineralization, there are also iron dolomite, iron calcite, chrome muscovite, pyrite lithology, ice feldspar, fine-grained pyrite, arsenic, antimony, and mercury , Bismuth, thorium mineralization and other low-temperature alteration combinations.


6.Focus on the fractured and fractured zones and tectonic alteration zones in basic rocks, ultrabasic rocks, huang porphyry, alkaline rocks, metabasic granite rocks, carbon siliceous rocks, impure carbonate rocks .


7. Carry out heavy sands in rivers, secondary halo of ditch system, and various geochemical exploration methods. Finding gold with gold is currently the main method of finding gold.


8. Find gold according to the indication elements for gold, such as mercury, antimony, bismuth, arsenic, thallium, selenium, lead, zinc, copper, and silver.


9. Indirect search for gold deposits by using geophysical methods to identify fault structures and sulphide distribution.