What are the main types of gold deposits in my country?

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Gold ore deposits are formed from gold ores and contain two major chemical characteristics: isotopes and trace elements. The mineralization conditions generally include physical and chemical conditions, temperature, air pressure, characteristics of attachments, salt The content and density are the conditions for gold ore mineralization.

(picture from the Internet)

According to the geological characteristics and mineralization conditions of gold deposits, the current main Gold deposit types are divided into:Greenstone belt type, Carlin type, epimetamorphic clastic rock type, fluvial volcanic rock type, continental volcanic rock type, conglomerate type, produced in mid-plutonic intrusive rocks and contact zone type< /strong>Several kinds. Let’s find out together below!

Greenstone belt type gold deposits

This type of gold deposits are generally located in mountainous areas, and areas where greenstone belt type gold ores are produced are prone to volcanoes and volcanic eruptions. The outgoing substances and foreign substances have certain chemical and physical interactions with rocks, which usually take a longer time and are more intense. In the greenstone belt area, there are also green, flaky rocks containing quartz and mica materials, which are distributed in early Precambrian volcanic-sedimentary rocks around the world.

Carlin-type gold deposits

There are three forms of formation of Carlin-type gold deposits, namely:

Oreation forms of seepage hot brine :After the formation comes into contact with brine containing a large amount of gold ore substances, over a long period of time, through repeated chemical and physical reactions, mineral deposits are gradually formed, which are distributed in the depths of geothermal heat and exist in the form of a fluid type. .

The geological form of layer control: The brine containing a large amount of geothermal minerals surges upward and gradually flows to the surface. After a long period of deposition, it forms an erosive mineral source. layer of rock.

Geothermal deep type: Brine containing minerals interacts with external water sources, such as precipitation or automatically generated slurry, to form a new topography.

Ultimately metamorphic clastic rock gold deposits

Ultimately metamorphic clastic rock type gold deposits are also called hard sandstone gold deposits. This type of rock is mainly produced in the Proterozoic Temple-Paleozoic gold-bearing Epimetamorphic rock series is the main deposit type among gold mines in my country.

River facies volcanic rock type gold deposit

A type of gold mine that is rich in gold-rich volcanic massive sulfide and sedimentary fumarole, ophiolite, and volcanic sedimentary rocks. Gold deposits accompanied by gold are formed by marine volcanic hydrothermal fluids and sedimentation.

Continental volcanic rock type gold deposits

The distribution of this type of rock is often centered on volcanoes, and there are also porphyry and conglomerate types. The mineralization age is mostly Mesozoic. Various forms of continental volcanic rocks and sub-volcanic rocks are the main rocks.

Conglomerate gold deposits

This type of ore is relatively small, and most of them are distributed in Jurassic and Tertiary sandy conglomerates, and are produced on the edge of the basin.

Produced in mid-plutonic intrusive rocks and gold deposits in contact zones

In mid-plutonic intrusive rocks and gold deposits in external contact zones, the formation of ore bodies is related to fractured rocks The mineralization type is mostly quartz vein type, and the mineralization period of the rock is believed to be in the Himalayan period.

The above are several common mineralization types of gold deposits. The mineralization types are different and the properties of the gold minerals contained are different. Therefore, when beneficiation, their Ore beneficiation process plans also vary. Xinhai Mining has more than 20 years of experience in gold ore beneficiation process design and mineral processing equipment production and manufacturing. It can design suitable gold mines based on user needs and gold deposit characteristics. The mineral processing process and complete sets of gold mineral processing equipment provide customers with cost-effective mineral processing solutions.

Gold deposit mineralization materials are excerpted from - New Technology Application and Practice - Research on Geological Characteristics of Gold Deposits and Origin of Mineral Deposits