(a) looking for in the stream
When the pebbles of Tian Huangshi were found in Shoushan Creek, there must be a high mountain vein at its source. At the beginning of Qing Dynasty, pebbles were found in Li's creek in Changle County, so he spent money to buy Yueyang Mountain, and told future generations that Yueyang Mountain sold skins instead of bones. He concluded that there must be a large number of Shoushan stone mines in the rocks of Yueyang Mountain. Later, people really mined "hibiscus stone" in Yueyang Mountain.
(2) looking for boulders in the mountains
The subvolcanic rocks were exposed to the surface after wind and rain erosion, then cracked and fractured, and the Shoushan stone sandwiched in the rocks also collapsed and rolled down the hillside. Therefore, the discovery of this kind of stone shows that there are veins of Shoushan stone in the nearby mountains.
(3) Using waterline to find ore vein
There is a jargon among stone farmers in Shoushan village: there is no stone without water. Shoushan stone is condensed after magma fills the cracks in the rock. Although the cracks in the rock are filled, there are still cracks, through which both surface water and groundwater leak and trickle out of the surface. In Shoushan, where there is water, there are veins; Without water, there would be no veins.
(4) Looking for veins directly from rocks.
It is found that there is a filled Shoushan stone vein in the rock crevice, which can be excavated along the vein. This is the most accurate prospecting method. It is said that this is how the monk cave was dug.
Extraction process and method
Put it in a wooden trough, rinse it with water and clean it with a dustpan.
The method of gold prospecting with water is called heavy sand prospecting.
Heavy sand method is an exploration method with a long history. As early as 2000 BC, it was used to wash placer gold. Because it is simple, economical and effective, it is still an important prospecting method. It can not only be used to find placers and primary minerals with relatively stable physical and chemical properties of ores and minerals (such as natural gold, natural platinum, wolframite, scheelite, cassiterite, cinnabar, iron ore, rutile, chromite, tantalite, niobite, beryl, zircon, monazite, xenotime and other metals, precious metals and rare rare rare earth metal minerals, as well as diamonds, corundum and topaz). Through the study of artificial heavy sand minerals, we can divide strata, compare rock masses, study the genesis of ore deposits and the occurrence state of ore-forming elements, understand the regional metallogenic characteristics and predict minerals. It should be applied in mineral survey, deposit exploration and deposit research, and can achieve remarkable results.
Use the density difference between gold and other minerals to find gold.
In fact, due to the different densities of the two, mercury will be used in large quantities.
In water, gold will sink, while other minerals will be easily washed away with a little effort.
In mercury, gold will sink, while other minerals will float, thus achieving the purpose of separating gold.
The actual extraction of gold in some gold mines (non-gold sands) is based on the concept of melting point. Not all gold can be washed!