Deposit Types Gold mineralisation of the SJG (Songjiagou) Project is hosted within the pyritic-sericitic conglomerate of the Linsishan Formation from Laiyang Group of Cretaceous-age. Gold enrichment occurs as veins, as well as in disseminated and stockwork distributions. The SJG vein-type mineralisation could be appropriately described as mesothermal genesis. The disseminated and stockwork types of mineralisation have some aspects of epithermal mineralisation but are both spatially and genetically associated with the vein-type; as such it can be considered a variant of that type. The SJG Project’s conglomerate type gold deposit is believed to be associated with mesothermal filling activities and followed by alterations and metasomatism. Property geology The SJG Project is situated in the eastern part of the Jiaobei Terrane and on the northeast margin of the Jiaolai Basin and is regarded as part of the Muping-Rushan gold belt. Paleoproterozoic metamorphic rocks of the Jingshan Group are mainly distributed to the north of the SJG Project area near Tanjia village, and are comprised of biotite granulite, graphite-bearing gneiss, leucogranite, and marble. These strata generally dip southeast with angles varying from 15° to 50°. Cretaceous-age rocks are predominately represented by the Linsishan Formation, part of the Laiyang Group and comprised of conglomerate and sandstone. The Linsishan Formation in the SJG Project area has an overall northeast strike and dips southeast wi ........

The SJG Project consists of SJG Open-Pit Mine, SJG Underground Mine.

SJG Open pit mine
SJG Open-Pit Mine is operated as an open pit using conventional road-truck technique which is assumed as the bench development method. The mining sequence will be controlled by two pushbacks.

As of 31 December 2022, the mining operations were conducted in the open pit with the open pit’s upper opening area of about 0.34 km2 , and the open pit is producing at three benches of +21 m ASL, +33 m ASL and +45 m ASL, which can cater for the existing operations for about 1.0 years or until a depth of +21 m ASL is reached, as estimated by Yantai Zhongjia based on the expanded mining rate.

The mine is scheduled to operate 8 hours per shift, 3 shifts per day and 330 days per year. The production capacity is assumed to be 3,300 ktpa ore.

Conventional drill-blast-load-haul mining cycle is assumed to move rocks within the open pit. The bench height is 12 m high. The blast holes have a grid pattern of (3.5 × 3.8 – 4.0 × 4.0) m. The explosives applied include emulsion for wet rocks and ammonium nitrate/fuel oil (the ‘‘ANFO’’) for dry rocks. Ore is trucked directly to the processing plant and waste rock trucked directly to buyers, as such there is no requirement for waste dumps.

Conventional road-truck method will continue be applied to the mine development. Roads around the open pit can be dug freely, with supplementation of rock breaking. Convent ........

- subscription is required.

- subscription is required.

- subscription is required.