en.Wedoany.com Reported - The series of national reference materials for bastnaesite rare earth ore composition analysis, submitted by the Chengdu Institute of Multipurpose Utilization of Mineral Resources, CGS, officially received the national reference material certification from the State Administration for Market Regulation on June 5, 2026, with national standard numbers ranging from GBW(E)070446 to GBW(E)070450. The total rare earth content of this series ranges from 2% to 64%, covering the mainstream content range for China's rare earth geological exploration, beneficiation process optimization, and high-quality rare earth concentrates.

The Chengdu Institute of Multipurpose Utilization of Mineral Resources, CGS (referred to as the "Chengdu Institute"), established in 1964, is a public welfare research institution directly under the China Geological Survey of the Ministry of Natural Resources. It has long been engaged in the research and development of mineral resource comprehensive utilization technologies and the preparation of reference materials. The institute hosts innovation platforms such as the National Engineering Research Center for Comprehensive Utilization of Mineral Resources, accumulating extensive technical achievements in the green and efficient utilization of key minerals including rare earths, lithium, vanadium-titanium, and fluorite. Bastnaesite is the primary raw material for extracting light rare earth elements (including lanthanum, cerium, praseodymium, neodymium, etc.), which are widely used in strategic industries such as new energy vehicle motors, wind turbines, high-end chips, and aerospace components. This approved series of reference materials is the first set covering the entire process for bastnaesite rare earth ore composition analysis.

Reference materials are metrological standards used to calibrate testing instruments, evaluate analytical methods, and determine the characteristic values of materials, serving as the "yardstick" in the testing field. This series covers the complete content range from low-grade ores to high-grade concentrates, applicable to full-process testing needs including ore grade determination during geological exploration, process sample monitoring during beneficiation optimization, and quality inspection of final concentrate products. Bastnaesite rare earth ore is an important source of light rare earths, which play an irreplaceable role in strategic emerging industries such as new energy vehicles, wind power generation, and electronic communications. The approval of this series fills a gap in the field of reference materials for bastnaesite rare earth ore composition analysis both domestically and internationally.

According to the Chengdu Institute, this approved series of reference materials will provide accurate and authoritative data support for geological prospecting of bastnaesite rare earth ores and comprehensive utilization of mineral resources, further strengthening China's foundation for rare earth testing standardization. The successful development of this series helps improve the accuracy and comparability of analytical data during rare earth resource exploration and development, providing technical support for the high-quality development of the rare earth industry. In the next step, the Chengdu Institute will continue its work on reference material preparation, gradually improving the reference material system for rare and scattered elements, and promoting the sustainable development of China's mineral resource comprehensive utilization efforts.

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