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Jiaojia Gold Mine

Plant in Shandong [Shantung], China with commodities Gold, Silver
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Mineral rights holdings
  12. Ownership information
  13. Production statistics
  14. Reserves and resources
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10304752
MAS/MILS ID 5700450018
Record type Site
Current site name Jiaojia Gold Mine

Geographic coordinates

Point of reference Town
Geographic coordinates: 120.11247, 37.34372 (WGS84)
Location accuracy 10000(meters)

Site location context

Political divisions (FIPS codes)

Shandong [Shantung](province)

China(country)

Asia(continent)

Land(continent)

Geographic areas

Country State
China Shandong [Shantung]

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Pyrite Unknown

Nearby scientific data

Town (1) 120.11247, 37.34372
ListMap

Economic information

Ore body information

  • Thickness 880M
    Length 1000M
    Width 30M
    Field Value
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 DISSEMINATED
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin METAMORPHISM
    Primary Ore Control FRACTURING
    Secondary Ore Control FAULTING
    Type of Wallrock Alter. #1 SERICITIC
    Type of Wallrock Alter. #2 PYRITIZATION
    Date of Last Modification 920618

Comments on the geologic information

  • THE SULFUR IS IN THE PYRITE. SINCE SULFIDE MINERALS ARE HIGHLY ASSOCIATED WITH THE GOLD, FLOTATION IS REQUIRED.

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Significant Yes
Mining method Filled Stopes - Horiz Cut and Fill W/Tailings
Year of first production 1980
Plant type Beneficiation (Mill)
Plant subcategory Flotation
Milling method Flotation

Mining district

District name Ye Xian

Mineral rights holdings

Type of mineral rights Other

Ownership information

  • Type Owner
    Owner Government Of The People'S Republic Of China
    Interest 100
    Home office China Pr
    Year 1992
  • Type Operator
    Owner Jiaojia Gold Mine, Shandong Provence Gold Co.
    Home office China Pr
    Year 1992

Production statistics

  • Year 1980
    Description Year Brought Into Production 500 Mt Ore/Day
  • Year 1988
    Description Expanded Production 750 Mt Ore/Day
  • Year 1992
    Description Expanded Production 1000 Mt Ore/Day

Comments on the production information

  • THE GRADES OF AU AND AG IN THE DORE BULLION PRODUCT ARE NOT AVAILABLE. SMELTER USED ONCE A MONTH.
  • THE OUTPUT CAPACITY IS CALCULATED USING AN OVERALL RECOVERY OF 92% FROM ORE TO DORE BULLION.

Reserves and resources

  • Type In-situ
    Estimate year 1992
    Indicated 6600000mt ore
    Demonstrated 6600000mt ore
    Total resources 6600000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 5 g/mt Gold Major 1992
    Silver Ag 5 g/mt Silver Minor 1992

Workings at the site

  • Type of workings Underground
    Overall depth 340M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method HORIZ CUT & FILL W/TAILINGS 10-60
    Percent Recovery 90
    Hardness of Rock UNKNOWN
    Rock Characteristics UNKNOWN
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Number of Shafts 1
    Number of Inclines 1
    1st Condition of Workings OPEN
    Capacity 1100
    Capacity Units MT ORE/DAY
    Operating Days per Year 300
    Operating Shifts per Day 3
    Year of Information 1992

Comments on other economic factors

  • THE MILL CAPACITY IS ESTIMATED BASED ON THE MINE CAPACITY AND THE ASSUMED NUMBER OF DAYS/YR WORKED. OVER ALL RECOVERY IS 92%.
  • THE DIFFERENCE BETWEEN THE ORE GRADE OF 5 G/MT(R-ASSAY) AND THE HEAD GRADE OF 4.54 G/MT IS DUE TO 10% DILUTION.
  • ORE IS EXTRACTED 100%, LEAVING NO PILLARS. THIS IS ACCOMPLISHED BY ALTERNATELY DRIFTING AND FILLING(HORIZONTALLY) ALONG STOPING BLOCKS THAT ARE 60M ALONG STRIKE. FOR ACCESS, THERE IS ONE 2-COMPARTMENT VERTICAL SHAFT WITH TWIN FOUR-ROPE CHINESE-BUILT FRICTION HOISTS. ALSO, A RAMP TO THE SURFACE HAS BEEN DEVELOPED TO FACILITATE TRANSPORT OF EQUIPMENT BETWEEN LEVELS AND OUT OF THE MINE. WIRE MESH, SHOTCRETE, ROCK BOLTS AND CABLE BOLTS ARE USED FOR ROCK SUPPORT. ONLY EXPANSION SHELL AND FRICTION TYPE BOLTS ARE USED. IMPORTED EQUIPMENT (WAGNER, AND FRENCH) ARE USED. 330 DAYS/YR WORKED.

Reference information

Bibliographic references

  • Deposit

    "GOLD MINING IN CHINA", WYLLIE, ROBERT J. M.(EDITOR), EN-

  • Deposit

    GINEERING AND MINING JOURNAL: THE INTERNATIONAL MINING

  • Deposit

    MAGAZINE, MACLEAN HUNTER, APRIL, 1992.

  • Deposit

    CHINA GOLD INDUSTRY INDEX, CHANGCHUN GOLD RESEARCH

  • Deposit

    INSTITUTE, CHINA, 1991, P. 214. (IN CHINESE)

General comments

Subject category Comment text
Deposit THE WIDTH OF THE ORE ZONE RANGES FROM LESS THAN 20M TO 40M. THERE ARE DISCONTINUITIES, BRANCHES, AND SMALL ORE BODIES PARALLEL TO THE MAIN ZONE. THE OREBODY DIPS AT ABOUT 30 DE- GREES. OREBODY HAD BEEN PROVEN BY DRILLING TO 440M BELOW SURFACE AS OF 1991. ORE GRADE MAY DECREASE WITH DEPTH. THE THICKNESS OF THE ORE BODY IS CALCULATED USING THE DIP AND THE VERTICAL MINE DEPTH OF 440M THAT ARE GIVEN.
Deposit THE JIAOJIA MINE IS THE OLDEST MINE IN YE COUNTY. MINING IN THE DISTRICT GOES BACK TO MING DYNASTY TIMES. MODERN EXPLOR-- ATION OF THE DEPOSIT STARTED IN 1967, A REPORT WAS PREPARED IN 1972, AND DEVELOPMENT STARTED IN 1975. PRODUCTION STARTED 1980.

Reporter information

Type Date Name Affiliation Comment
Reporter 07-JUL-1993 Slater, Linda C. U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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