Name of the Mine
Songjiagou mine.

Location  
Muping-Rushan gold belt, Shangdong province, China.

Mine Owner/s  
Majestic Gold Corp. The Songjiagou gold (SJG) openpit is held through Majestic’s subsidiary Yantai Zhongjia Mining. The SJG underground mine is also owned by the subsidiary.

Brief Description  
The SJG mine comprises the SJG openpit mine, the SJG underground mine, and related facilities that are suitable for supporting the operations. 

The SJG openpit and SJG underground mines are regarded as a conglomerate type of gold deposits, associated with mesothermal filling activities followed by alterations and metasomatism.

The SJG openpit and underground mines are both in production.

Brief History  
The mining licence for the SJG openpit mines was issued by the Shandong Department of Land and Resources in 2006. Mine construction started in December 2002. The mining licence holder at the time was Yantai Mujin Mining Co. In August 2010, ownership of the mining licence was transferred to Yantai Zhongjia, the current owner of the SJG mine. The mining licence for the SJG underground mine was issued by the Shandong Department of Land and Resources in February 2016.

Primary Metals/Minerals  
Gold.

Secondary Metals/Minerals  
None stated.

Geology/Mineralisation  
The SJG mine is situated in China’s Shandong peninsula, along the south-eastern margin of the North China plate and on the western margin of the Pacific plate, in the eastern part of the Jiaobei Terrane and north-eastern margin of the Jiaolai basin, which is considered a part of the Muping-Rushan gold belt.

Regional tectonics are characterised by two major orogenesis: the Indosinian collision between the North China and Yangtze cratons, with the nearly east-west directional suture defined as the Triassic Qinling-Dabie-Sulu metamorphic belt during the late Permian to Triassic epoch; and the Yanshanian subduction of the Pacific plate beneath Eurasia plate during the Middle Jurassic epoch.

The rock layer comprises Paleoproterozoic Jingshan Group metamorphic rocks, Mesozoic Cretaceous Laiyang Group sediments and the Cenozoic quaternary system and is dominated by the Laiyang Group. The local structure features the north-east-striking Yazi fault zone and the north-west-oriented Tanjia fault zone. Main magmatic activity is represented by monzonite granite.

The highest grades of gold mineralisation are confined to comparatively narrow though vertically and horizontally persistent zones. Gold mineralisation is associated with sulphides. Mineralised rocks are present in grained, in-filling, clastic, or brecciated textures. The boundaries between wall rocks, internal waste, and host rocks are not visually obvious, and must be determined by chemical analysis.

Gold mineralisation occurs in pyrite-sericite altered conglomerates in the Linsishan formation, which is part of the Cretaceous Laiyang Group. Gold enrichment occurs as veins and is in disseminated structures and stockwork distributions. The deposit is a moderate temperature hydrothermal filling and metasomatic conglomerate type gold deposit. As there is no clear boundary between wall rocks and ore, chemical analysis is used for defining orebodies.

Reserves  
As at June 30, 2024, probable reserves for the SJG openpit were estimated at 22.6-million tonnes grading 1.17 g/t gold. The SJG underground mine had probable reserves amounting to 530 000 t grading 1.39 g/t gold.

Resources  
As at June 30, 2023, the SJG openpit had indicated resources of 34.2-million tonnes grading 1.1 g/t gold and inferred resources of 36.7-million tonnes grading 0.95 g/t gold. The SJG underground mine has indicated resources of 1.64-million tonnes grading 1.38 g/t gold and inferred resources of 3.01-million tonnes grading 1.24 g/t gold.

Type of Mine
Openpit and underground.

Mining Method  
The openpit mine is mined using conventional road-truck technique, known as the bench development method. 

The underground mine uses cut-and-fill mining and shrinkage stope mining methods and relies on cemented paste fill or cemented rock fill to support the stoping operation. The development system mainly consists of a trackless access ramp, six level haulage ways, an auxiliary shaft, a surface upcast and an underground upcast.

Major Infrastructure/Equipment  
Processing workshops, equipped with maintenance vehicles or electric hoists.

The mine includes a 6 000 t/d processing plant to produce gold concentrate. Processing equipment includes a heavy-duty ore feeder, a jaw crusher, electric magnetic iron remover, cone crushers, a vibrating screen, three belt conveyers, a ball mill, a spiral classifier, an agitating tank, flotation machines, a roots blower, a submerged pump, a reagent agitating tank, a computer dosing machine, a thickener and ceramic filter. The processing plant also has two 1 230 m3 concrete head tanks and a pumping station.

Two kilometres south-east of the processing plant is a tailings storage facility and dam.

A laboratory is located adjacent to the processing plant.

Prospects  
None stated.

Contact Details 
Majestic Gold Corp
Tel +1 604 560 9060
Email info@majesticgold.com
Website https://majesticgold.com/

Sources
Majestic Gold Corp. Website: https://majesticgold.com/
Majestic Gold Corp. Qualified person’s report for Songjiagou gold Ppoject, Shandong Province, People’s Republic of China (December 14, 2023).