Application of double-index of sand content and fineness modulus for the ore delineation and resource estimation in a backfilling marine sand mine in Guangdong

XI Long; NI Yugen; CAI Pengjie; REN Yingzhi; CHEN Keheng; LIN Jijiang

doi:10.16028/j.1009-2722.2023.280

2025 Vol. 41, No. 1

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Article navigation > Marine Geology Frontiers > 2025 > 41(1): 93-101

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XI Long, NI Yugen, CAI Pengjie, REN Yingzhi, CHEN Keheng, LIN Jijiang. Application of double-index of sand content and fineness modulus for the ore delineation and resource estimation in a backfilling marine sand mine in Guangdong[J]. Marine Geology Frontiers, 2025, 41(1): 93-101. doi: 10.16028/j.1009-2722.2023.280

Citation:

XI Long, NI Yugen, CAI Pengjie, REN Yingzhi, CHEN Keheng, LIN Jijiang. Application of double-index of sand content and fineness modulus for the ore delineation and resource estimation in a backfilling marine sand mine in Guangdong[J]. Marine Geology Frontiers, 2025, 41(1): 93-101. doi: 10.16028/j.1009-2722.2023.280

Application of double-index of sand content and fineness modulus for the ore delineation and resource estimation in a backfilling marine sand mine in Guangdong

1.
Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou 511458, China
2.
Key Laboratory of Marine Mineral Resources, Ministry of Natural Resources, Guangzhou 511458, China
3.
State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
4.
South China Sea Sea Area and Island Center, Ministry of Natural Resources, Guangzhou 510310, China
5.
Key Laboratory of Marine Environmental Detection Technology and Application, Ministry of Natural Resources, Guangzhou 510310, China

More Information

Corresponding author: NI Yugen, niyugen@163.com

Received Date: 17 May 2024

Publish Date: 28 January 2025

Abstract

Abstract

The ore delineation index of marine sand is the core content of marine sand resource estimation, which is of great significance to the investigation, exploitation and supervision of marine sand resources. Based on extensive pratical experience in marine sand investigation, a system using sand content and fineness modulus to delineate ore for marine sand investigation was proposed. Taking a marine sand mining area for backfill in Guangdong as an example, the application of ore delineation with single-index (sand content ≥50%) and double-index (sand content ≥50% and fineness modulus≥0.7) in delineating ore was compared. Results show that using the single-index method could easily result in overestimation of reserve. However, using double-index method requires the sand content to meet the standard, and ensures the coarseness of sand to be up to standard, which could effectively avoid excessive amounts of extremely fine-grained sand from being delineated as ore, thus ensuring the mining value of the delineated ore bodies. Therefore, double-index method is more scientific and practical.
- marine sand /
- marine aggregates /
- ore delineation index /
- sand content /
- fineness modulus

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References

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