Prospect of granitoid intrusion-related gold – sulfide mineralizations in the Lo Gam structure, Northeastern Vietnam

Project leader's name
Pham Thi Dung
Research hosting institution
Institute of Geological Science
Project duration
2017 - 2018
́Project’s budget
600 million VND
Classify
Excellent
Goal and objectives of the project

- Clarification of relationship between Au-sulfide mineralization with granitoid intrusionsin Lo Gam structure, Northeast Vietnam;
- Prospect of the Au-sulfide mineralizationin the Lo Gam structure.

Main results

Theoretical results:
- Clarification of composition characteristics and formation age of granitic rocks and Au-sulfide mineralizations in the Chiem Hoa District, Tuyen Quang Province;
- Establishing the gold mineralization has direct relationship to the granitoid magmatism and building the exploration model for granitoid intrusion-related gold system;
- Establishing the prospecting criteria and buildingthe prospective mapfor Au-sulfide mineralization in the Lo Gam structure at 1:200.000 scale.

Applied results:
Study on composition features of mineralizations and granitoid rocks in Lo Gam structure (Au-As-Sb deposits and granitoid rocks in Tuyen Quang province) are necessarynot only for management, exploitation andusage of mineral resources, but also very useful for mineral exploitation and processing company, especially expanding prospect of the exiting ore areas, discovering new deposits and using minerals in an environmentally friendly way.

Some images of the project:

T4.33a1

T4.33a2

Novelty and actuality and scientific meaningfulness of the results

- Clarification of composition characteristics and formation age of granitic rocks in Chiem Hoa area;
- Building an exploration model for granitoid intrusion-related gold system

Products of the project

Scientific papers in referred journals:

  1. Peter A. Nevolko, Thi Dung Pham, Trong Hoa Tran, Tuan Anh Tran, Thi Phuong Ngo, Pavel A. Fominykh, 2018. Intrusion-related Lang Vai gold-antimony district (Northeastern Vietnam):Geology, mineralogy, geochemistry and 40Ar/39Ar age. Ore Geology Reviews 96 (2018) 218–235.
  2. Peter A. Nevolko, Pham Thi Dung, Pavel A. Fominykh, Tran Trong Hoa, Tran Tuan Anh, Ngo Thi Phuong, 2019. Origin of the intrusion-related Lang Vai gold-antimony district (Northeastern Vietnam): Constraints from fluid inclusions study and C-O-S-Pb isotope systematics.Ore Geology Reviews 104 (2019) 114–131.
  3. Phạm Thị Dung, Trần Trọng Hòa, Trần Quốc Công, Trần Hồng Lam, Đào Thái Bắc, Phạm Ngọc Cẩn, Bùi Ấn Niên, Phạm Thị Phương Liên, 2018. Some results of the petrological, major elemental geochemical characteristics and formation pressure – temperature of Chiem Hoa Permian – Triassic granite, Tuyen Quang province. Journal of Geology, series A, No 366/2018, pp.1-11.

Technological products:

  • Prospective map for the Au-sulfide mineralization of the Lo Gam structure at 1:200.000 scale;
  • Database: thin section descriptions, chemical and isotopic compositions of granitoid rock and ore (major and trace elements, radiogenic isotopes (Rb-Sr and Nd-Sm isotopic ratios), stable isotopes (O, C and S)); Age dating of Chiem Hoa granitoid and Ar-Ar dating of the ore;
  • Project’s report.: 10.4. Other products:
Research region

- Mining companies;
- Administrative offices such as General Department of Geology and Minerals of Vietnam.

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