Writing 9 major problems that are easy to make in geological reports

First, the location traffic is simple

Some reports often ignore the orientation, straightness, exploration range, latitude and longitude, and area of ​​the county where the mining area is located, indicating that it belongs to the administrative division. Introduction to the nearest railway stations, airports, docks name, mileage and traffic conditions between the mine through or adjacent (existing or proposed) railways, highways, waterways and other important traffic arteries as well as mine. Some are texts and figures that do not match, and some have no traffic location maps.

2. Insufficient content of natural geography and economic status in the survey work area

It summarizes the main features, types, absolute heights and relative heights of the topography of the mining area, the lowest erosion datum of the main rivers, the flow of the river during the abundance (dry) and the highest flood level. According to representative meteorological data, the climate characteristics, temperature changes, rainfall, storm intensity, evaporation, relative humidity, wind, wind direction, lightning conditions, rainy season and freezing period, and depth of frozen soil are explained.

Briefly describe the economic situation in the region, including fuel, electricity, water supply, building materials, industrial agriculture, animal husbandry, and population. The water supply source, the name of the power grid, the distance from the water source and the power grid, and the satisfaction of the water supply and power supply should be explained. These contents are external conditions for future mine construction, and it is very important to involve investment, efficiency and even safety in mine construction. However, some reports are incomplete and insufficient data collection, mainly because of insufficient attention.

Third, the problem of mineral rights setting

This section does not have any specifications. It is based on actual needs. Some reports do not mention the time of initial acquisition of the survey certificate, the name of the license, etc., and explain the evolution process in the middle; some report the schematic diagram of the lack of mineral rights. Some did not convert the coordinates of the inflection point of the May Fourth coordinate system into an eight-zero coordinate system.

Fourth, the problems in the past work review

According to the requirements of the specification, if the geological report has been submitted and reviewed by the resource reserve management agency, the report review time, the review body, the relevant file number, and the approved resource reserves should be described in more detail. However, some reports do not account for these issues.

  V. Regional geology

The problems that are generally easy to produce are:

The specification defines the scale and narrative focus, and requires succinct and concise, but some of the texts of the report are beyond the scope of the drawing. The content is numerous, unclear, and the focus is not prominent. There is a report on this aspect of the text up to nearly 20 pages. Some reports have copied and excerpted the contents of academic reports and papers, and mixed geological reports with geological research reports. 6. The geological characteristics of the deposit (zone) are simple and incomplete.

The main performance is as follows:

There are reports that describe the scope of the geological map beyond the mining area (bed). The texts do not match, and the strata, structures, and magmatic rocks related to mineralization and ore-controlling within the range of the map should be highlighted. Some reports did not specify stratigraphic occurrence, thickness, and mutual contact, and did not describe rock characteristics.

Some reports ignore the description of the structure. For the ore-controlling structure, the relationship between the occurrence and scale of the ore body is not described. For the ore-breaking fault after mineralization, the degree of damage is not described, that is, it is horizontal and vertical for the ore body. Wrong displacement distance.

7. Ore body (layer) geology

1. Problems with the characteristics of the ore body (layer)

The specification requires “a comprehensive description of the total number, total thickness, ore ratio, spatial distribution range, distribution law, and interrelationship of the ore bodies (layers), etc. The ore-bearing rocks, spatial locations, and morphology of major industrial ore bodies (layers) are respectively described. , the occurrence, length, width (depth), thickness, variation along the trend and tendency, the basis and reliability of the connection, and the impact of the ore after the mineralization on the ore body connection. The ore body (layer) for a long time, small mine The physical characteristics can be listed. Some reports are not divided into primary and secondary, all are described by means of textual narrative, and the emphasis is not prominent. Some reports introduce the size of the ore body without tilting and deepening, and the thickness of the ore body is not true thickness. It is the horizontal thickness. Some reports do not describe the location of the ore body. For concealed ore bodies, the depth of the ore body is not accounted for.

Eight, the quality of ore

1. Insufficient basis for the division of "three belts"

Some reports have no phase analysis data, and only the oxidized zone, the mixed zone, and the primary zone are classified according to the intuitive understanding of field observation.

2. Insufficient research on companion beneficial (harm) components , simple text discussion, lack of combined analysis data

3. Ore industry type

Some report Industrial Classification inaccurate, did not seize the main characteristics of the ore beneficiation process of influence, such as a deposit containing arsenic is very high, but yet the ore industry type as "clastic fine disseminated gold mine", should It is suitable for “high-arsenic fine-dip-dyed gold deposit”. According to the natural type of ore, comprehensively consider the degree of oxidation, the symbiotic combination of major metal minerals, harmful elements and other characteristics to divide the industrial type, in order to provide the basis for determining the best beneficiation process.

4. The industrial grade classification is not appropriate, mainly because the understanding is not accurate.

The ore grade level, divided lean ore, the ore, high-grade ore, zinc ores lean ore such as lead Pb + Zn <4%, middlings Pb + Zn4 ~ 8%, Bonanza Pb + Zn> 8%. The division of industrial grades is the basis for the ore selection and smelting. For example, iron ore TFe ≥ 50% is rich ore, directly into the furnace ironmaking, TFe < 50% is lean ore, and it needs to be subjected to beneficiation to enter the furnace.

  9. Causes of mineral deposits and prospecting signs

The specification requires “a brief description of the genesis of the deposit, the factors controlling the mineralization, the law of mineralization and enrichment, and the prospecting mark, pointing out the prospect of the mining area and the direction of prospecting.” This section generally has the following shortcomings: The discussion is simple, the basis is not sufficient, and the geological understanding is not Deep, the law summary is not clear. The main reason is that during the exploration process, the focus is on prospecting and exploration, ignoring comprehensive research, especially the lack of isotopic, rare earth elements, temperature measurement and other data with a certain depth of research. Some report arguments and arguments deviate from each other and are considered to be hot-water sedimentary deposits, but they do not discuss hot water mineral combination and hydrothermal sedimentary facies characteristics; some mix mineral deposit types and genetic types. For example, the “ quartz vein type gold deposit” is mainly incorrect in understanding the concept of the genetic type. Some reports that this part of the content is too much, it seems lengthy and cumbersome.