• Data Access
  • Your Email  
  • Your Email  
Keep me signed in.
Forgot your password?
Close
  • Forgot Your Password?
  • Enter the email you signed up with and we'll email it to you.
  • Your Email  
Close
Back
MDO
Mining Data Solutions
  • Home
  • Database
  • Subscribe
  • Sign In
  • Sign In
China
Jiama Mine

This page is not tailored to
devices with screen width under 750 px.
 Location:
16 km S from Maizhokunggar, China

  Regional Office:
No. 34 Jinzhu Middle Road
Lhasa
China
WebsiteWeb
Additional Resources for Suppliers & Investors
Drill results over 30 g/t Au
Stay on top of recent discoveries.
Search drill results by commodity and grade.
Largest mines in the Americas
Mining and mill throughput capaciites.
Full profiles of select mines and projects.
Deepest underground mines
Shaft depth and mill throughput data.
Full profiles of select mines and projects.
Heavy mobile equipment
HME type, model, size and quantity.
Full profiles of select mines and projects.
Permitting and construction projects
Projects at the permitting or construction stage. Full profiles of select projects.
Mines with remote camps
Camp size, mine location and contacts.
Full profiles of select mines and projects.
Mines & projects in China
A list of country's mines and projects.
Full profiles of select mines and projects.
  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

Thank you for browsing through mine profiles compiled by the Mining Data Online team.

Would you like to subcribe or schedule a Demo?
  • Name:
     
  • Company:
     
  • Position:
     
  • Phone:
  • Email:
  • Message:

Overview

StageProduction
Mine TypeOpen Pit / Underground
Commodities
  • Copper
  • Gold
  • Silver
  • Molybdenum
  • Lead
  • Zinc
Mining Method
  • Truck & Shovel / Loader
  • Cut & Fill
  • Sub-level caving
Processing
  • Flotation
Mine Life30 years (as of Jan 1, 2020)
The Jiama Mine is currently developing its underground mine which is expected to produce higher grade ore, with anticipated completion by the end of 2021.
Latest NewsChina Gold International Announces Commercial Production on Series II of Jiama Phase II Expansion     July 3, 2018


Owners & OPERATOR

Source:
CompanyInterestOwnership
China Gold International Resources Corp. 100 % Indirect
Tibet Huatailong Mining Development Co. Ltd. (operator) 100 % Direct
Jiama Copper-Polymetallic Mine (“Jiama”), which is owned and operated by Tibet Huatailong Mining Development Co. Ltd. (“Huatailong”), a wholly-owned subsidiary of China Gold International Resources Corp. Ltd. (“The Company”).

Deposit Type

  • Porphyry
  • Skarn


Summary:

The Jiama deposit is a structurally controlled stratiform skarn-type copper-polymetallic system. The majority of high grade mineralisation is associated with shear zone contacts between the Duodigou and Linbuzong formations and shear related folding. The zone of mineralisation within fault hosted skarn alteration measures kilometres in both strike and dip and remains open at depth to the northeast.

Mineralisation is also associated with granite porphyry dykes intruding the ‘Duodigou Marble’ and observed within the overlying hornfels of the Linbuzong Formation.

Although both deposit types are of lower grade than that of the skarn, the hornfels style of mineralisation may potentially be of further economic value in the future.

Three types of copper-polymetallic mineralisation are recognised in the project area, these include skarn, hornfels and porphyry hosted deposits.

High grade copper-polymetallic mineralisation is associated with skarn type alteration within shear zone contacts between the Duodigou and Linbuzong formations. This stratiform fault zone is tabular to lenticular in shape, has a variable dip, strikes west-northwest and hosts the primary lode.

The mineralised body itself has a 60° near surface dip angle which flattens to an average dip of 10° with depth. Thicknesses vary between 2 m to 240 m, averaging 33 m, its strike length is approximately 2,400 m and its length down dip ranges between 150 to 1,900 m. It is primarily divided into two zones of mineralisation; the Niumatang Zone and the Jiama Zone. A number of smaller, lenticular shaped skarn-type mineralised bodies have also been identified below and to the southeast of the primary body, however they are generally discontinuous and of limited strike (<200 m) and thickness.

Copper mineralisation shares associations with chalcopyrite, bornite and chalcocite and is hosted by either thin veinlets, as disseminated sulphide crystals or as massive sulphide zones.

Hornfels hosted mineralisation is of lower grade than that of the skarn type deposits and occurs predominantly as disseminated sulphides. Mineralisation is fine grained and consists of copper in association with chalcopyrite, bornite and molybdenum. No massive sulphide zones or veining has been recognised within the texturally massive and highly fractures rock mass. Earlier observations of copper associated with pyrite and pyrrhotite coating fracture planes has been attributed to secondary enrichment.

The mineralised body shows no preferential orientation, it is shallow, tabular shaped and approximately 1,200 m in length, 1,000 m wide and generally 10 to 50 m thick, although a maximum thickness of 826 m was intercepted in drillhole ZK3216. It pinches out in the westsouthwest and in general is thinner towards both the west-northwest and east-southeast.

Mineralisation in porphyritic granodiorite and monzogranite is characterised by molybdenum with lesser amounts of chalcopyrite and bornite. Sulphides are medium to coarse grained and confined to a thin horizontal pipe shaped body with a maximum known thickness of 476 m. The porphyritic host lies beneath the Duodigou Formation and appears intruded into the sheared contact between the two basement units.


Mining Methods

  • Truck & Shovel / Loader
  • Cut & Fill
  • Sub-level caving


Summary:

Conventional mining methods have been proposed for the open pit and underground operations.

China Gold currently mine the Jiama deposit as an open pit and underground mine and intend to continue and expand both operations. The Jiama underground workings are currently accessed via declines and adits, with future plans to include a conveyor drive for ore haulage, vertical shaft for waste haulage and decline expansion for improved access. The current mining activity is limited to hand-held air leg mining for both development and stoping.

Conventional selective mining methods using truck and shovel are planned to be employed to extract the mineralised material from the proposed open pits. Mining is planned to occur on shallow flitches, typically 3m to 4m high, which will enable better grade control of the mineralised zones.

The open pits are the Jiaoyan and South Pit. The Jiaoyan pit will be mined in two stages and South pit four stages.

Mining of Phase II will commence in two open pits and an extensive underground mine including; Jiaoyan Pit, South Pit and the underground mine respectively. The open pits and underground expansion will be developed simultaneously. The Open pits will be separated from the underground operation by a crown pillar that will be maintained between the base of South Pit and the upper Underground Mine. Stope voids will be progressively backfilled beneath the base of the pit floor to reduce the potential for open pit and underground mine interaction. The two underground mining methods considered in this area are cut & fill mining and sub-level caving. The area under the pit is not planned to be designed in the initial 10 years of operation. The pit should be finished by this time which would make sub-level caving a possible option here.


Crushing and Grinding


Processing

  • Flotation

Flow Sheet: Subscription required

Summary:

Phase I of the Jiama Project commenced commercial production in September 2010 and included the development of the Tongqianshan and Niumatang open cut pits. Jiama Phase II expansion consisted of two series, with each series having a mining and mineral processing capacity of 22,000 tonnes of ore per day. Completion of the entire Phase II expansion project achieved commercial production July 1, 2018. The Jiama Phase II expansion Series I and Series II, each has a mineral processing capacity of 22,000 tpd. The full design capacity of ore processing at Jiama Project has increased to 50,000 tonnes of ore per day.[2019 AIF F-40, p.37]

The following summary is derived from the Jiama Technical Report (2014)

Huatailong No. 1 Plant:

China Gold will operate the two site processing plants and prov de comprehensive technical support across all facets of the operation.

The 6,500 tpd Huatailong processing plant commenced operation in 2010, and was designed ........

Recoveries & Grades:

CommodityParameter20192018201720162015
Copper Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Head Grade, % 0.640.711.120.850.79
Gold Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Head Grade, g/t 0.290.390.670.480.46
Silver Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Head Grade, g/t 17.317.929.32421.6
Subscription required - Subscription is required.

Production:

CommodityUnits202020192018201720162015
Copper M lbs  ......  Subscription required ^  ......  Subscription required  ......  Subscription required794038
Gold oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in concentrate. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20192018201720162015
Tonnes processed  ......  Subscription required  ......  Subscription required
Daily processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required6,000 t6,000 t
Daily mining capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required2,132,483 t2,317,522 t
Subscription required - Subscription is required.

Reserves at December 31, 2019:

CategoryTonnage CommodityGradeContained Metal
Proven 20 Mt Copper 0.6 % 120.9 kt
Proven 20 Mt Gold 0.2 g/t 0.13 M oz
Proven 20 Mt Silver 8.6 g/t 5.53 M oz
Proven 20 Mt Molybdenum 0.05 % 9.4 kt
Proven 20 Mt Lead 0.05 % 9.9 kt
Proven 20 Mt Zinc 0.03 % 6.7 kt
Probable 385.73 Mt Copper 0.6 % 2,327 kt
Probable 385.73 Mt Gold 0.17 g/t 2.17 M oz
Probable 385.73 Mt Silver 10.99 g/t 136.3 M oz
Probable 385.73 Mt Molybdenum 0.03 % 127 kt
Probable 385.73 Mt Lead 0.14 % 540.5 kt
Probable 385.73 Mt Zinc 0.08 % 313.5 kt
Proven & Probable 405.73 Mt Copper 0.6 % 2,447 kt
Proven & Probable 405.73 Mt Gold 0.18 g/t 2.3 M oz
Proven & Probable 405.73 Mt Silver 10.87 g/t 141.83 M oz
Proven & Probable 405.73 Mt Molybdenum 0.03 % 136.4 kt
Proven & Probable 405.73 Mt Lead 0.14 % 550.4 kt
Proven & Probable 405.73 Mt Zinc 0.08 % 320.2 kt
Measured 95.02 Mt Copper 0.39 % 370.6 kt
Measured 95.02 Mt Gold 0.08 g/t 0.25 M oz
Measured 95.02 Mt Silver 5.41 g/t 16.63 M oz
Measured 95.02 Mt Molybdenum 0.04 % 34.3 kt
Measured 95.02 Mt Lead 0.04 % 41.8 kt
Measured 95.02 Mt Zinc 0.02 % 22.4 kt
Indicated 1,360 Mt Copper 0.4 % 5,503 kt
Indicated 1,360 Mt Gold 0.11 g/t 4.63 M oz
Indicated 1,360 Mt Silver 5.79 g/t 254.82 M oz
Indicated 1,360 Mt Molybdenum 0.03 % 460.3 kt
Indicated 1,360 Mt Lead 0.05 % 732 kt
Indicated 1,360 Mt Zinc 0.03 % 460 kt
Measured & Indicated 1,455 Mt Copper 0.4 % 5,874 kt
Measured & Indicated 1,455 Mt Gold 0.1 g/t 4.88 M oz
Measured & Indicated 1,455 Mt Silver 5.76 g/t 271.45 M oz
Measured & Indicated 1,455 Mt Molybdenum 0.03 % 494.6 kt
Measured & Indicated 1,455 Mt Lead 0.05 % 773.7 kt
Measured & Indicated 1,455 Mt Zinc 0.03 % 482.4 kt
Inferred 406.1 Mt Copper 0.3 % 1,247 kt
Inferred 406.1 Mt Gold 0.1 g/t 1.32 M oz
Inferred 406.1 Mt Silver 5.1 g/t 66.93 M oz
Inferred 406.1 Mt Molybdenum 0 % 123 kt
Inferred 406.1 Mt Lead 0.1 % 311 kt
Inferred 406.1 Mt Zinc 0 % 175 kt

Commodity Production Costs:

CommodityUnits20192018201720162015
Credits (by-product) Copper USD  ......  Subscription required  ......  Subscription required -1.11 / lb -1.01 / lb -0.85 / lb
Cash costs Copper USD  ......  Subscription required  ......  Subscription required 2.05 / lb 2.09 / lb 2.39 / lb
Cash costs Copper USD  ......  Subscription required†  ......  Subscription required† 0.94 / lb† 1.09 / lb† 1.54 / lb†
Total cash costs Copper USD  ......  Subscription required  ......  Subscription required 2.47 / lb 2.49 / lb 2.84 / lb
Total cash costs Copper USD  ......  Subscription required†  ......  Subscription required† 1.36 / lb† 1.48 / lb† 1.99 / lb†
† Net of By-Product.
Subscription required - Subscription is required.

Financials:

Units20192018201720162015
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 206  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 106.2  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required


Proposed Heavy Mobile Equipment as of January 31, 2014:
HME TypeSizeQuantity
Backhoe 5 cu. m 2
....................... Subscription required ....................... Subscription required 1
....................... Subscription required ....................... Subscription required 3
....................... Subscription required ....................... Subscription required 2
....................... Subscription required ....................... Subscription required 2
....................... Subscription required ....................... Subscription required 3
....................... Subscription required ....................... Subscription required 2
....................... Subscription required 2
....................... Subscription required ....................... Subscription required 1
....................... Subscription required ....................... Subscription required 2
....................... Subscription required ....................... Subscription required 28
....................... Subscription required ....................... Subscription required 2
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 30, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
Annual Report 2017
Annual Report 2016
Annual Report 2015
Technical Report 2014
Pre-Feasibility Study Report 2012
Subscription required - Subscription is required.

News:

NewsDate
China Gold International Announces Commercial Production on Series II of Jiama Phase II Expansion July 3, 2018

Aerial view:

Subscription required - Subscription is required.

Terms of Use Privacy Policy © 2020 MDO Data Online Inc.