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China
Songjiagou Mine

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 Location:
37 km S from Yantai, China

  Address:
Qiansongjiao Village, Wanggezhuang Town, Muping District
Yantai City, Shandong Province
China
264106
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Processing
  • Flotation
Mine Life2032
Latest NewsMajestic Gold Corp. Reports 2019 Annual Results     July 20, 2020


Owners & OPERATOR

Source: p. 3
CompanyInterestOwnership
Yantai Dahedong Processing Co. Ltd. (operator) 25 % Indirect
Majestic Gold Corp. 75 % Indirect
Majestic holds its 75% interest in Songjiagou through its 94% owned subsidiary Majestic Yantai Gold Ltd. The remaining 25% of Songjiagou is held by Yantai Dahedong Processing Co. Ltd.

Deposit Type

  • Breccia pipe / Stockwork
  • Vein / narrow vein


Summary:

The eastern Shandong (“Jiaodong”) gold district is divided from west to east into the Zhaoyuan- Yexian, Qixia, and Muping-Rushan gold belts. The Songjiagou Property is located within the MupingRushan gold belt situated in the eastern part of the Jiaobei Terrane, which contains about 20% of the gold reserves of the Shandong Peninsula. Gold mineralization is characterized as either vein-filling or as disseminated structures/stockwork.

Project area. A ductile shear zone and ductile brittle fault zone are major geological structures in the area. Major magmatic activity is represented by monzonite granite. Other veins include diabase, diorite, hornblende porphyrite, and lamprophyre.

Palaeoproterozoic metamorphic rocks of the Jingshan Group are mainly distributed to the north of the Project area near Tanjia village, and are comprised of biotite granulite, graphite-bearing gneiss, leucogranulite, and marble. These strata generally dip southeast with angles varying from 15° to 50°.

Cretaceous-age rocks are predominately represented by the Lisishan Formation, part of the Laiyang Group and comprised of conglomerate and sandstone. The Lisishan Formation in the Project area has an overall northeast strike and dips southeast with an angle of 20° to 40°. The formation is dividable into two conformably contacted sections according to the clast size. The first section of Lisishan Formation consists of relatively larger clasts with grain sizes of about 3 cm – 20 cm and is predominately composed of monzonitic granite and quartz; marble, gneiss, schist and granulite are occasionally visible in this section. The second section is characterized by more fine grained and rounded clasts made of sandstone and siltstone.

Gold mineralization of Songjiagou Project is hosted within the Cretaceous-age pyritic- sericitic conglomerate of the Laiyang Group Linsishan Formation. Gold enrichment occurs as veins as well as in disseminated and stockwork distributions. The vein-type mineralization is appropriately described as mesothermal; the disseminated and stockwork mineralizations have some aspects of epithermal mineralization but are both spatially and genetically associated with the vein-type, and so can be considered a variant of that type.

The Songjiagou Project’s conglomerate type gold deposit is believed to be associated with mesothermal filling activities and followed by alterations and metasomatism.

Wall rocks are generally consistent with the host rocks, comprised of conglomerate and occasional lamprophyre. Wall rocks and internal waste contain small quantities of gold, usually less than 0.10 g/t. The boundaries between wall rock, internal waste, and the host rocks are not visually obvious, and must be determined by chemical analysis.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Songjiagou mine is currently in production from the Open Pit.

Mining inventory is loaded by excavator and then transported to the processing plant by truck.

In order to effectively control the grade and match excavator capacities, block sizes in the resource model were set at 10 m × 10 m × 5 m. Two benches were combined into one during optimization, and the final bench heihgt is 10 m.


Crushing and Grinding


Processing

  • Flotation

Flow Sheet: Subscription required

Summary:

There are three processing plants operating in Songjiagou mine. Two processing plants with a capacity of 200 tpd and 1,200 tpd commenced operations in 2006; another processing plant, with a capacity of 6,000 tpd, was put into production in May 2011. The current processing capacity of Songjiagou gold mine is 7,400 tonnes per day (“tpd”).

The Songjiagou processing plant technology includes conventional three-stage crushing within a closed circuit, grinding within a closed circuit, and flotation consisting of one stage of roughing, one stage of cleaning, and two stages of scavenging.

Haul trucks deliver the mining inventory from the open pit to the primary crushing workshop for grid screening, the underflow of which is sent to the mining inventory bin. Inventory with particle sizes less than 500 mm are fed to the jaw crusher by a heavy apron feeder, and the jaw crusher’s discharge is subjected to secondary crushing.

A vibrating feeder feeds the primary c ........

Recoveries & Grades:

CommodityParameter201920182017201620152014
Gold Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Head Grade, g/t 0.560.640.550.490.430.42
Subscription required - Subscription is required.

Production:

CommodityUnits201920182017201620152014
Gold oz  ......  Subscription required  ......  Subscription required25,36322,97519,48819,630
All production numbers are expressed as metal in concentrate.
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required1,662,583 t1,673,484 t1,714,722 t
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required1,619,876 t1,578,797 t1,628,609 t
Daily milling capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required6,000 t
Subscription required - Subscription is required.

Reserves at January 31, 2013:

CategoryTonnage CommodityGradeContained Metal
Indicated 26,600,000 t Gold 1.4 % 1,197,427 oz
Inferred 23,400,000 t Gold 1.45 % 1,090,996 oz

Commodity Production Costs:

CommodityUnits20192018201720162015
Total cash costs (sold) Gold USD  ......  Subscription required  ......  Subscription required 723 / oz 1,014 / oz 1,210 / oz
All-in sustaining costs (sold) Gold USD  ......  Subscription required  ......  Subscription required 850 / oz 1,174 / oz 1,411 / oz
Subscription required - Subscription is required.

Financials:

Units20192018201720162015
Sustaining costs M USD  ......  Subscription required  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 2.56  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 22.6  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -1.82  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -6.33  
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -2.43  
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameRef. Date
....................... Subscription required ....................... Subscription required Feb 9, 2021
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
Financial Review 2017
Management Discussion & Analysis 2017
Management Discussion & Analysis 2016
Technical Report 2016
Management Discussion & Analysis 2015
Subscription required - Subscription is required.

News:

NewsDate
Majestic Gold Corp. Reports 2019 Annual Results July 20, 2020
Majestic Gold Corp. Reports 2019 Q4 Results November 29, 2019
Majestic Gold Corp. Reports 2018 Annual Results January 28, 2019

Aerial view:

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