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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
Production Start... Lock
Mine Life... Lock
SnapshotThe Caijiaying Mine is an operating zinc, gold, silver, and lead mine, together with processing plant, camp and supporting facilities.

2022 was one of the most disrupted and challenging years in the history of the Group with ongoing Covid-19 pandemic issues and 143 days of lost production due to restrictions imposed by the PRC authorities during the Winter and Paralympic Olympics and the Chinese Communist Party 20th National Congress.

Owners

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

Contractors

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SourceSource

Deposit type

  • Porphyry

Summary:

The Caijiaying Mine is located at the northern margin of the North China Craton in the Yanshan Metallogenic Belt within Hebei Province of the PRC. This prolific metallogenic belt trends east-west for hundreds of kilometres and contains numerous large mineral deposits of various types making the Yanshan one of the most economic regions in northern China. The local geology at the Caijiaying Mine comprises of early Proterozoic granulite and gneiss with marble lenses, which is unconformably overlain by the late Jurassic Baiqi Formation and Zhangjiakou Formation. Porphyry sills and dykes intruding along faults have then cut across the 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 consistent with that of a replacement skarn type deposit. Lithologies comprise a mixed sequence of amphibolite-grade metavolcanic and metasedimentary rocks intruded by three generations of Jurassic porphyry dikes and sills that crosscut the mineralisation. The mineralisation commonly occurs as sulphide lenses of sphalerite with lesser pyrite and minor galena that favourably replace calc silicate and iron enriched amphibolite units within the folded metamorphic volcanic basement rocks. The Caijiaying Mine orebodies of Zn-Au-Ag-Pb are up to 20 m thick, tend to dip steeply to moderately to the west, and extend along strike and down dip tens to hundreds of metres. Overall, the geology at the Caijiaying Mine is complex and the deposit is the result of a combination of volcanic activity, structural deformation and hydrothermal alteration.

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

CommodityUnits20222021202020192018201720162015
Zinc t  ....  Subscribe  ....  Subscribe  ....  Subscribe37,41337,11243,40331,94838,560
Lead t  ....  Subscribe  ....  Subscribe  ....  Subscribe1,2191,0301,4211,4391,785
Silver oz  ....  Subscribe  ....  Subscribe  ....  Subscribe344,228280,712394,117310,610343,575
Gold oz  ....  Subscribe  ....  Subscribe  ....  Subscribe17,76816,23020,48912,65410,363
All production numbers are expressed as metal in concentrate.

Operational metrics

Metrics20222021202020192018201720162015
Annual processing capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe
Ore tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe862,029 t872,069 t920,168 t817,506 t571,815 t
Tonnes processed  ....  Subscribe  ....  Subscribe  ....  Subscribe930,613 t930,472 t968,080 t874,983 t839,713 t

Production Costs

Commodity production costs have not been reported.

Financials

Units202220212020201920182017
Revenue M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe 82.3   99.1   126.7  
Operating Income M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe 14.2   35.6   63.8  
Gross profit M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe 33.7   53.3   82.3  
Pre-tax Income M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe 11.7   34.8   60.9  
After-tax Income M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe 6.1   25.5   43.3  
Operating Cash Flow M USD  ....  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 Sep 25, 2023

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

Aerial view:

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