A guide to writing the geological exploration reports固体矿产勘查矿山闭坑地质报告编写规范英文版.doc

SPECIFICATIONS FOR COMPILATION OF GEOLOGICAL REPORTS FOR MINERAL EXPLORATION AND MINE-CLOSING1 SCOPEThis document describes the requirementsnecessary for the acceptanceof geological reports of mineral exploration and mine-closing. It includesdescriptions of the purpose and content of reports and detail rules and requirements for writing reports.2 STANDARDIZED CITATIONSu GB/T 12719-1991 SPECIFICATIONS FOR HYDROGEOLOGICAL AND ENGINEERING GEOLOGICAL EXPLORATIONu GB/T 13908-2002 GENERAL RULES OF SPECIFICATION FOR GEOLOGICAL RECONNAISSANCE OF MINERALu GB/T 17766-1999 CLASSIFICATION FOR MINERAL RESOURCE/RESERVEu DZ/T0078-1993STIPULATION FOR ORIGINAL GEOLOGICAL LOGGING OF SOLID- MINERAL EXPLORATIONu DZ/T0079-1993STIPULATION FOR COMPREHENSIVE TREATMENT AND COMPREHENSIVE RESEARCH OF GEOLOGICAL DATA IN MINERAL EXPLORATION3THE PROPERTIES AND PURPOSE OF GEOLOGICAL EXPLORATION REPORTS OF MINERAL EXPLORATION AND MINE-CLOSING3.1The geological exploration report describes the spatial distribution, quality and quantity of the mineral resource/reserve; Discussesit's the quality control and degree of confidence; and estimates its economic significance using text and graphical data. The geological exploration report can be used as the foundation for mine construction plans or further exploration. It can also be used as the foundation for examining and commentingon the mineral resource and reserves.3.3The report mentioned above is also regarded as essential data for the government to manage the mineral resource as well as for research and teaching. 4THE BASIC RULES FOR THE PREPARATION OF GEOLOGICAL REPORTS OF MINERAL EXPLORATION 4.1The mineral exploration is divided into four stages as follows: pre-exploration, reconnaissanceexploration, detailed prospecting andAdvanced exploration. A corresponding geological exploration report must be completed at the end of each stage. Exploration investors evaluate these reports at each sage and decidewhether or not to continue the program. However if a report is not produced at the end of each stage, a detailed report based on overall exploration data must be compiled at the end of the exploration project. For the non-working (Renunciative) exploration block within the exploration lease, the report must be based on previously obtained exploration data. A Geological exploration report based on the obtained data must be compiled even if geological exploration was stopped due to cancellation. 4.2The geological exploration report must objectively, factually and accurately reflect all of the data and results of the exploration activities. 4.3The geological exploration must be combined with feasibility evaluation, and the geological exploration report must include geological exploration and feasibility evaluation. Feasibility study can be divided into three stages as follows: elementary study, pre-feasibility study and feasibility study. Elementary study is directly compiled into report by the exploration team. As far as the pre-feasibility study and feasibility study were concerned, the geological exploration report must quote the key conclusions from the pre-feasibility and feasibility study reports. 4.4It is required that the geological exploration report be pertinent, practical and scientific. Accurate original data and reasonable conclusions areessential to a good geological exploration report. The geological exploration report with charts and tables must be digitized. Computer technology must be used in the evaluation of resource/reserve. It is recommended that computer technology be used to prepare the geological exploration report.4.5Each stage of the geological exploration program must be conducted according to the requirements of government regulations/specifications. Exploration data must be obtained for each stage. Theoutline of geological reports attached to this document is suitable only for the detailed exploration stage. For other stages of the exploration project, the exploration report can be adjusted as required but all of obtained data must be reported. 5 REQUIREMENTS FOR THE COMPILATION OF GEOLOGICAL MINERAL EXPLORATION REPORTS 5.1 The quality of the work and data must be checked and accepted by the exploration investor or by senior company management before the end of geological fieldwork. Any significant problems discovered must be resolved before the completion of geological exploration reports. The preparation of the geological exploration reports cannotcommence before the fieldwork is checked and accepted.5.2Before the completion of the geological exploration reports, the chief editor must prepare an abstract based on appendix A of this document. The chief editor must consider the mineral property, exploration work facts and the requirement from the exploration investors. Any change of the finalized and accepted abstract must get the permission of the exploration investor first. 5.3The chief editor oversees the preparation of the geological exploration report; make the working plan; as well as checking and resolving possible problems to make sure the report can be finished on time. A regular quality-control program must be instituted.5.4The geological exploration report must contain text, attached tables and appendices. According to the requirements for the business confidentiality or the requirements of data management of government, the mining leassee can divide the reports into different volumes. 5.5The title of the geological exploration report is standardized as follows: ××Province (City or Municipality) ××County（City, Banner, Orefield or Coalfield）××Ore district（Ore block, borefield）××(Mineral type) Deposit××（exploration stage）Report. The accompanying map, map format, map scale etc. will be adopted according to related standard.5.6Original data obtained during exploration must be pigeonholed according to related technical standards. According to the governmental specification for reserve examination and estimation of mineral resource, the geological exploration report will be submitted for formal examination and comment after preliminary examination. The chief editor must revise the geological reports based on the suggestion arising from the examination and comment report. The copies of approved report must be submitted to the appropriate department in accordance with related specification for geological data management. 5.7The examination and comment report must be attached to the geological exploration reports.Appendix A (Standard appendices)The outline of geological exploration reports for mineral explorationA.1 IntroductionA.1.1Exploration Objective and TaskA brief presentation of exploration objectives and detailed requirements from exploration investor and the pit planning organization. A.1.2Location and AccessState the block No; exploration area as well as longitude and latitude of corner points; the position and straight distance to the county-level-city; mine boundary and mining area; current existing or planned railways and roads which pass through or adjacent to the mining area; distance to the nearest station, dock and airport.A.1.3Physical Geography and Economy of the Exploration AreaCharacterize he topography and summarizesignificant geomorphic features,absolute altitude and relative altitude; lowest base level of erosion, waterflow in high-water period and low-water season, as well as highest flood level etc. Based on the representativemeteorological data, to state the climatic features, air temperature changes, rainfall, storm intensity, evaporation capacity, relative humidity, wind direction, thunder situation, rainy season, freeze-up and frozen soil layer depth in mining area. Additionally, the geological hazards such as intensity of earthquakes, earth slide and debris flow must be briefly described. Briefly describe the local economy including fuel, electricity power, water supply source, construction material, industry, agriculture, animal husbandry and population etc. Furthermore, water supply source, transmission-line system of electric power, power supply capacity as well as the distance between the mining area and the water supply source and electric power system.A.1.4Comment on Previous WorkBriefly describe the discovery of the deposit; the geological, geophysical and geochemical work since discovery. Briefly describe previous work including the amount of work and major result obtained; and then make comment on the quality of previous results, exploration and research. The production scale, general situation of production, total mined ore quantity and won resource/reserve.A.1.5Current WorkStatethe beginning and the end, brief work history, quantity of work completed (shown as insert tables), funds invested/capital, major geological results, deposit type, general geological features, total resource/reserve, earliest producing area of the property and development prospects. Resource/reserve table with the average grade must be inserted in this part of the geological exploration report.A.2REGIONAL GEOLOGYBased on the regional geological investigation data on 1:50000 scale, briefly state the regional structural setting; features and the distribution of major strata, magmatic rocks that are related to deposit genesis; as well as the features and the distribution of main structures related to the deposit.A.3GEOLOGY OF ORE DISTRICTDetailed description of the strata, structure, magma, metamorphism and alteration of wall rock that influenced the metallogenesis; as well as a description of the ore-hosting layer and the character of the mineralization.A.4GEOLOGY OF OREBODY/ORE BEDA.4.1Feature of Orebody/Ore BedGeneral analysis of the features of ore body/bed such as total number of orebodies, total thickness of each orebody, ore-bearing rate, spatial distribution, distribution pattern and correlation. Separately describe the features of major industrial ore body/ bed e.g. ore-hosting rock, dimensional location, configuration (shape), occurrence, length, width, thickness, variability along trend and dip as well as the fault influence after metallogenesis. When a large number of small orebodies are to be described; they may be documented by inserting a table.A.4.2Ore PropertyDivide the orebody into zones (oxidized zone, mixed zone and primary zone) according to the ore property, and then separately describe the texture, structure, mineral composition, percentageof economic mineral, as well as the grain size, configuration, distribution modality, crystallizing age, crystallization sequence and coexisting relationship. For the ore, the chemical composition, the content of valuable components, usable components and harmful components etc. A.4.3Ore Type and GradeExpatiate the distribution of oxidized, mixed and primary zone. State the ore types, industrial grade and related method/principle for divisiory. For the ore with obvious metallurgical features differing, detailed description must be made for their proportion and spatial distribution.A.4.4Wall Rock of Ore Body/BedState the variety of wall rock in the hanging wall and footwall of major ore bodies/beds, mineral composition; approximate content of usable components, valuable components and harmful components; alteration and the contact relationship with ore body/bed. A.4.5Metallogeny and Clue for ProspectingBriefly describe metallogeny, ore controlling factors, ore enrichment features and clues for prospecting. A.4.6Evaluation for Associated MineralsEvaluate the coexisting minerals and associated minerals that were explored synchronously. Describe the exploration level, scale, distribution and ore property.A.5TECHNICAL FEATURES OF ORE PROCESSINGA.5.1Sample type, Sampling Method and Its RepresentativenessDescribe the sampling purpose, sampling requirement (including the requirement of variety and quantity from investor or pit planning department), sample variety, sampling method, and quantity of sampling sites. Additionally, describe the representativeness in terms of ore type, spatial distribution of samples and sample grade.A.5.2Experiment Variety, Method and ResultDescribe the various technical ore-processing experiments for diversified types of ore; processing method and mineraldressing method as well as the processing circuit of experiments. Any results related to the experiments must be described.A.5.3Evaluation of the Industrial-Utilization-Capability of OreBased on the results from technical ore-processing experiments, work out an evaluation for the metallurgical capability and industrial-utilization-capability of the ore; describe the possibility of recycling usable components and the treatment of harmful components; and then put forward a reasonable method to comprehensively utilize coexisting and associated components.A.6MINING TECHNICAL CONDITIONA.6.1HydrogeologyA.6.1.1Simply describe the location of hydrogeological units within the mining area; topography, geomorphy and hydrometeorology; supply, runoff and draining condition of underground water; the lowest base level of erosion of deposit; and the lowest level of draining of shaft. A.6.1.2Discuss the lithology, thickness, distribution and karst fissure of aquiclude or aquifer in the mining influenced area. Describe the water yield property, transmissivity, water head height, water quality, specific water yield, water temperature, water supply condition and relation to adjacent aquiclude; structural fracture zone, weathering fracture zone, development degree, distribution and influence of karst; influence on deposit by surface water and goaf water. A.6.1.3Predict water yield of pit. Determine water-infilling factors and boundary of hydrogeology. Prepare the hydrogeology model. Select reasonable/appropriatecalculation procedure and hydrogeological parameters to calculate the normal water yield and the maximal water yield during different processing stages; and make a review of the reliability of calculated water yield. Make a recommended water yield for pit planning. A.6.1.4Evaluation of water supply source. Pre-evaluate pit water draining and possibility of comprehensive utilization; water quality and specific water yield of underground water, surface water, geothermal water and mineral water. Water supply direction must be mentioned if there is no water supply source within mining area. A.6.2Engineering GeologyA.6.2.1Discuss the lithological character, texture type, weathering and alteration degree, physical-mechanical properties; lithology, thickness, distribution, physical-mechanical property and water-physical properties. Prepare a statistics for the PQD value (rock quality designation). Evaluate the features of rock mass. Discuss the scale, property, distribution, infillings and degree of cementation for fault/fractured zones that can influence