GB/T 17766-1999 English PDF (GBT17766-1999)

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GB/T 17766-1999: Classification for resources/reserves of solid fuels and mineral commodities
GB/T 17766-1999
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 73.010
D 10
Classification for Resources/Reserves
of Solid Fuels and Mineral Commodities
ISSUED ON: JUNE 08, 1999
IMPLEMENTED ON: DECEMBER 01, 1999
Issued by: State Bureau of Quality and Technical Supervision
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Definitions ... 4
3 Classification and Coding ... 8
Appendix A (Suggestive) Chinese and English Comparison of Terms and
Vocabulary ... 15
Appendix B (Indicative) Classification Summary Comparison Form of the
Fuels and Mineral Resources at Home and Abroad ... 16
Appendix C (Indicative) Main Contents of Feasibility Study ... 18
Classification for Resources/Reserves
of Solid Fuels and Mineral Commodities
1 Scope
This Standard specifies the scope, definition, classification, category, code, etc. of
classification for resources/reserves of solid fuels and mineral commodities.
This Standard is applicable to preparing design, deploying work, calculating reserves
(resources), and formulating report during various phases of solid fuels and mineral
resources exploration, development periods. It is also applicable to assessing,
registering, figuring out the solid fuels and mineral resources/reserves; planning,
making plans, making solid fuels and mineral resource polices, preparing
specifications, regulations and guidelines for fuels and minerals resource exploration.
It can also serve as basis for evaluating and calculating the fuels and mineral
resources/reserves during the following activities, such as mining rights transferring,
fuels and mineral resources exploring and developing, as well as financing, etc.
2 Definitions
This Standard adopts the following definitions:
2.1 Solid fuels and mineral resources: the economically significant solid natural
enrichment formed by geological action on the earth’s crust and surface; according to
the output form, quantity and quality, the final mining is expected to be technically
feasible and economically reasonable. Its location, quantity, grade/quality, geological
characteristics are calculated and estimated by the specific geological basis and
geological knowledge. According to the geological assurance, it can be divided into
total identified mineral resources and undiscovered resources.
2.1.1 Total identified mineral resources: it indicates the total sum of solid fuels and
mineral resources that have been discovered through the exploration work. According
to the different results obtained from the geological assurance and feasibility evaluation,
it can be divided into three categories, namely, extractable reserve, basic reserve and
resource.
2.1.2 Undiscovered resources: it indicates the solid fuels and mineral resources that
have not been verified based on the geological basis and geophysical and
geochemical exploration anomaly prediction.
2.2 Mineral exploration1) work can be divided into four stages: reconnaissance,
prospecting, general exploration and detailed exploration.
2.2.1 Reconnaissance: according to regional geological and/or geophysical and
geochemical exploration anomaly findings, preliminary filed observation, very few
engineering verification results, comparison with the know mineral deposits with similar
geological characteristics, predication, propose the area with larger mineralization
potential for the prospecting. If there are sufficient basis, the predicated resources can
be estimated, which belongs to undiscovered resources.
2.2.2 Prospecting: it, against the area with larger mineralization potential for
prospecting and area with geophysical and geochemical exploration anomaly, by
adopting outcrop inspection, geological mapping, limited sampling engineering and
geophysical and geochemical exploration, roughly identifies the geology and structure
in the prospecting area. Generally, grasp the shape, occurrence and quality
characteristics of the mineral deposit (layer). An analogy has been carried out on the
processing, dressing and smelting properties of the minerals. In the end, it proposes
whether there is a value for further general exploration, or define the range of the
general exploration area.
2.2.3 General exploration: it, against the general exploration area defined by the
prospecting, by large-scale geological mapping and various exploration methods and
means, denser systematic sampling than the prospecting stage, basically identifies the
geology and structure, the shape, occurrence and size of main ore, ore quality;
basically determines the continuity of the ore body; basically identifies the technical
mining conditions for ore deposit. An analogy or laboratory process test research is
carried out on the processing, dressing and smelting properties of the ore, so that make
an evaluation of whether it has industrial value. If necessary, define the range of
detailed exploration; and can serve as pre-feasibility studies, master plans for mine,
and mine project proposals. For the ore district directly providing development and
utilization, the test degree for its processing, dressing and smelting properties shall
meet the requirements for mine construction design.
2.2.4 Detailed exploration: it, against the ore deposit with known industrial value or
detailed exploration area defined by general exploration, through encrypting various
sampling engineering, its spacing is sufficient to confirm the continuity of the ore body
(layer), identifies the geological characteristics of ore deposit in details; determines the
shape, occurrence, size, spatial location of ore deposit and ore quality characteristics;
identify the technical mining conditions of the ore body in details; laboratory process
1) The geological study in the United Nations International Framework on Reserve/Classification for
Resource can be divided into four stages: detailed exploration, general exploration, prospecting and
preliminary-prospecting. According to the definition comparison, the first three are equivalent to
China’s detailed exploration, general exploration, prospecting; while “preliminary-prospecting” doesn’t
exist in China’s mineral exploration stages; through comparison, such stage is before the prospecting,
and provides basis for prospecting, so it is changed into “reconnaissance” as per China’s practice,
which is equivalent to “pre-prospecting” in the United Nations’ classification framework.
generally lacks accurate parameters and detailed information required by the
evaluation, the estimated resources are only intrinsic economic.
2.4.2 Prefeasibility study: it indicates the preliminary evaluation on the degree of
economic viability for the development of ore deposit. Its results can provide a basis
for decision making as to whether the ore deposit is for detailed exploration or
feasibility study. For such study, there are generally mineral resources/reserves
obtained from adopting the industrial indicators after the general exploration and
detailed exploration; laboratory-scale processing, dressing and smelting test materials;
as well as estimated costs through data obtained from the price lists or similar mining
comparison. The contents of the prefeasibility study is the same as the feasibility study
(see Appendix A), but the level of details take the second place. When the investor
conducts a prefeasibility study for the selection of the proposed project, the indicators
and parameters suitable for the current market price shall be selected, and the
demonstratio...