There is a mystery in the golden land. Can anyone explain what this sentence means?
It means that there is gold in the Feng Shui treasure land.
The residual slope heavy sand method is a simple and low-cost, fast and effective method for finding gold. It is based on the formation of gold minerals and heavy sand minerals in the residual slope layer. The mechanical dispersion halo (flow) is used to further search for primary gold deposits. The enrichment of heavy sand in the Can Yi slope accumulation is mainly affected by the terrain. The heavy sand in the slope accumulation is generally chosen to set up sample points in the bottom of dry valleys, valley mouths or depressions.
The slope accumulation in mountain depressions , while residual heavy sand is usually sampled on the uneven bedrock surface. The grid method is often used for sampling of residual-slope heavy sand. Commonly used measuring network density.
The sampling depth of residual-slope weighted sand is generally 20-50c from the humus layer downward
m. The sample weight is at most about 20kg and washed in the field with a washing plate until it reaches gray heavy sand (grey). The weight of the sand should be no less than 15g), put it into a numbered small white cloth bag and dry it. Finally, the lime sand samples are uniformly organized and registered, the sample delivery form is filled in, and sent to the laboratory for identification. Extended information
Soil measurement method, also known as soil metal content measurement, is to find primary gold deposits by discovering abnormal metal content (or secondary halos) in residual slope soil. Soil measurement requires that the measurement line should be perpendicular to the direction of the regional structural line, and the sampling spacing depends on different scales. There is still no unified standard. Various scale soil measurement grids are commonly used. The sampling objects for upper soil measurement are soil layer and residual slope accumulation layer. Before starting work, it is best to conduct a sampling depth test and select the depth sampling with the most suitable effect. If no sampling test is performed, it is usually necessary to pass through the upper layer (humus layer) and take samples in the middle layer (leaching layer). The sampling depth is about 2
0-30 cm, and the weight is not less than 200g. The particle size of field samples is generally 60 mesh or less, and the samples must be filtered through a nylon sieve. The weight of the processed sample should be greater than 30g, and the sample should be sent to the laboratory for analysis.
Sampling analysis items for soil measurement should take into account the work area and the type of mineral deposits that may occur. But Au and Ag are the best indicator elements and have universal significance. Generally, the Au content in soil exceeds. 0.01pp
m and Ag content exceeding 0.7ppm are called abnormal areas, and it is possible to find gold deposits. In addition, based on prospecting experience in many areas at home and abroad, the best indicator elements, in addition to Au and Ag, mainly include As, Sb, Bi, CU, Pb_Zri, etc., and Co.