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China

Caijiaying Mine

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Caijiaying Mine

Location: 79 km NE from Zhangjiakou, China

Address:

No. 3 Village Zhangbei County
Zhangjiakou
China
075000

Contacts:

Additional Resources for Suppliers & Investors

Categories

Overview

Mine TypeUnderground
StatusActive
Commodities
  • Zinc
  • Lead
  • Silver
  • Gold
Mining Method
  • Longhole open stoping
Backfill type ... Lock
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SnapshotThe Caijiaying Mine is an operating zinc, gold, silver, and lead mine.

The increased production rates generated record amounts of metal in concentrate, propelling the Caijiaying Mine into the top six zinc metal in concentrate producers in China and a reliable source of high quality concentrate on a scale that can compete with imported products.

Expansion of the Caijiaying Mine into Zone II commenced in 2023 with the development of the Southern Ventilation shaft and underground development from Zone III. Expansion of Zone II is a three year project and by the end of 2023 access from the existing underground workings at Zone III was completed with work commencing on a third portal and internal declines.

Mine automation is focused on the deployment of western technology to eliminate manual tasks. Key targets are paste fill systems, shotcrete, cable bolting and emulsion explosives being deployed with remote loading.

Owners

SourceSource
CompanyInterestOwnership
Zhangjiakou Yuanrun Enterprise Management Consulting Service 11.2 % Indirect
Griffin Mining Ltd. 88.8 % Indirect
The major asset of Griffin Mining Limited is an 88.8% interest in Hebei Hua Ao Mining Industry Company Limited through its wholly-owned Hong Kong subsidiary, China Zinc Limited. Griffin now holds an 88.8% equity interest in Hebei Hua Ao and Yuanrun retains an 11.2% residual interest.

Contractors

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SourceSource

Deposit type

  • Porphyry
  • Replacement
  • Skarn

Summary:

The Caijiaying Mine is located at the northern margin of the North China Craton in the Yanshan Metallogenic Belt within Hebei Province of China. This prolific metallogenic belt stretching east-west for hundreds of kilometres contains numerous large mineral deposits of various types making the Yanshan one of the most economic regions in northern China. The local geology at Caijiaying comprises of early Proterozoic granulite and gneiss with marble lenses, overlain unconformably by the Late Jurassic Baiqi Formation and Zhangjiakou Formation. Porphyry sills and dykes, intruding along faults, subsequently cut across the geological sequence. Mineralisation is believed to be related to a Jurassic igneous event that altered the 2.3-billion-year-old metamorphic basement rocks.

The Caijiaying Mine hosts base metal and gold mineralisation characteristic of a distal skarn replacement mineral system. Lithologies comprise a mixed sequence of amphibolite-grade metavolcanic and metasedimentary rocks intruded by three generations of Jurassic porphyry dykes and sills that crosscut the mineralisation. The mineralisation commonly occurs as sulphide lenses of coarse sphalerite with lesser pyrite and minor galena that preferentially replace calc silicate and iron enriched amphibolite units within the folded basement rocks.

The mineralisation at Zone III is complex and formed within the favourable meta-volcanic units that have undergone structural deformation and hydrothermal alteration. The orebodies occur as upright isoclinal folds in the west of the mine, adjacent the regional north-south Grasshopper Fault. Towards the east, these folds transition to inclined open folds, resulting in narrower and more structurally complex mineralization. Orebodies of Zn-AuAg-Pb are up to 20 metres thick at fold closures and narrow to less than 2 metres at depth and to the east where the fold limbs dominate. Generally, mineralisation at Zone III tends to dip steeply to moderately westward and extends along strike with a shallow 20 metre north plunge. Mining activity at Zone II is in its early stages, with geological data primarily sourced from diamond drill core. Unlike Zone III, Zone II features limited underground development for detailed underground geological mapping although this is set to change throughout 2024.

Zone II
The Mineral Resource has a strike length of 1,300 m, a width of 800 m and extends from 10 m below surface to 700 m below surface.

Zone III
The Mineral Resource has a strike length of 1,200 m, a width of 650 m and extends from 30 m below surface to 700 m below surface.

Zone V
The Mineral Resource has a strike length of 630 m, a width of 800 m and extends to 700 m below surface.

Zone VIII
The Mineral Resource has a strike length of 530 m, a width of 450 m and extends from 220 m below surface to 780 m below surface.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

The results for 2022 were severely impacted by various suspensions in operations for nearly five months of the year.
CommodityUnits202320222021202020192018201720162015
Zinc t  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe37,41337,11243,40331,94838,560
Lead t  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe1,2191,0301,4211,4391,785
Silver oz  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe344,228280,712394,117310,610343,575
Gold oz  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe17,76816,23020,48912,65410,363
All production numbers are expressed as metal in concentrate.

Operational metrics

Metrics202320222021202020192018201720162015
Annual processing capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
Ore tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe862,029 t872,069 t920,168 t817,506 t571,815 t
Tonnes processed  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe930,613 t930,472 t968,080 t874,983 t839,713 t

Production Costs

Commodity production costs have not been reported.

Operating Costs

Currency20232022
UG mining costs ($/t milled) USD  ....  Subscribe  ....  Subscribe
Processing costs ($/t milled) USD  ....  Subscribe  ....  Subscribe
Total operating costs ($/t milled) USD  ....  Subscribe  ....  Subscribe

Financials

Units2023202220212020201920182017
Revenue M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 82.3   99.1   126.7  
Operating Income M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 14.2   35.6   63.8  
Gross profit M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 33.7   53.3   82.3  
Pre-tax Income M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 11.7   34.8   60.9  
After-tax Income M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 6.1   25.5   43.3  
EBITDA M USD  ....  Subscribe  ....  Subscribe
Operating Cash Flow M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 21.6   20.4   77.4  

Heavy Mobile Equipment

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AV - Autonomous

Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 5, 2024
....................... Subscription required ....................... Subscription required Subscription required Aug 5, 2024

EmployeesYear
...... Subscription required 2023
...... Subscription required 2022
...... Subscription required 2021
...... Subscription required 2020

Aerial view:

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