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Acoje Santa Cruz-Ug

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

Geologic information

Identification information

Deposit ID 10134070
MRDS ID ISM0035
MAS/MILS ID 5650150003
Record type Site
Current site name Acoje Santa Cruz-Ug
Alternate or previous names Acoje Mine
Related records 10024333

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 120.05762, 15.70836 (WGS84)
Elevation 650
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Philippines(country)

Asia(continent)

Land(continent)

Geographic areas

Country
Philippines

Commodities

Commodity Importance
Chromium Critical Primary

Nearby scientific data

Ore Body (1) 120.05762, 15.70836
ListMap

Economic information

Ore body information

  • Thickness 550M
    Length 8000M
    Width 40M
    Area 32HA
    Field Value
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 LENTICULAR
    Shape of Orebody #2 TABULAR
    Shape of Orebody #3 MASSIVE
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control IGNEOUS
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Total Surface Area (HA) 32
    Date of Last Modification 830706

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant Yes
Mining method Caving Methods - Sublevel Caving
Year of first production 1935
Milling method Gravity

Mining district

District name Zambales

Mineral rights holdings

Type of mineral rights Unknown

Ownership information

  • Type Owner-Operator
    Owner Acoje Mining Co., Inc.
    Home office Philippines
    Year 1975

Production statistics

  • Year 1987
    Description Chromite Ore 400000 Mt Chomite Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Chromium Chromium 4000000mt

Reserves and resources

  • Type In-situ
    Estimate year 1987
    Indicated 319000mt ore
    Demonstrated 319000mt ore
    Total resources 319000mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr 10.5 wt-pct Chromium Major 1987

Comments on the reserve resource information

  • 1/89 INSITU DEMO.TONNAGE = UG MINEABLE ONLY WITH 100 % RECOVERY AND 71.4 % TONNAGE DILUTION WITH 0 % CR2O3 MATERIAL.
  • M9C4=M1C1, M9C5=M1C2. TONNAGE FOR SURFACE MINE: 1.60 MILLION MT. TONNAGE FOR UNDERGROUND MINE: 1.25 MILLION MT.

Workings at the site

  • Type of workings Surface
    Area 32HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Percent Waste Rock 75
    Primary Material Cover SAND, GRAVEL
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 5
    Max. Pit Slope (degrees) 35
    Capacity 1200
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 1
    Unit Production Cost 15.52
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 2
    Year of Information 1981
  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method TOP SLICING 10-70
    Percent Waste Rock 0
    Percent Recovery 90
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics UNKNOWN
    Rock Support Chars. SUPPORTING
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    1st Condition of Workings OPEN
    Capacity 1200
    Capacity Units MT ORE/DAY
    Unit Production Cost 15.52
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 2
    Year of Information 1981

Comments on other economic factors

  • TRANSPORTATION COST MILL TO SMELTER: $26.30/MT.
  • THE MILL CAN PRODUCE 2 TYPES OF CONCENTRATE FOR ITS JAPANESE CUSTOMERS: A "AAA" GRADE WHICH IS FAIRLY LOW GRADE AT 46-46% CR2O3 AND IS USED FOR HIGH CARBON FERROCHROME PRODUCTION. THE HIGH GRADE CONCENTRATE NEEDS 2 STAGES OF SPIRAL CONCENTRATION WHILE THE LOW GRADE ONLY REQUIRES ONE STAGE. THIS CODING REPRESENTS A COMBINATION OF THE TWO PRODUCTS.

Reference information

Bibliographic references

  • Deposit

    ACOJE MINING COMPANY. 1979 ANNUAL REPORT. P. 24.

  • Deposit

    BACANI, M.M, JR. AND M.C. TORONGOY. "MINING METHODS OF

  • Deposit

    PHILIPPINES CHROMITE DEPOSITS". PHILIPPINES BUREAU OF

  • Deposit

    MINES. 1978. P. 14.

  • Deposit

    MIRANDA,F.E.ET AL. "NOTES ON PHILIPPINES MINERAL RESOURCES".

  • Deposit

    PHILIPPINES BUREAU OF MINES. INFORMATION CIRCULAR NO. 22

  • Deposit

    JANUARY 1975. PP. 1-18.

  • Deposit

    NEWMAN, W.A. & F.V. MODESTO. "ACOJE CHROMITE GRAVITY MILL".

  • Deposit

    SECTION 4, PAPER NO.6. PP.503-507.

  • Deposit

    PARINGIT, R.U. "HIGHLIGHTS OF THE GEOLOGY AND CHROMITE ORE

  • Deposit

    MINERALIZATION AT ACOJE MINE, SANTA CRUZ, ZAMBALES".

  • Deposit

    JOURNAL OF THE GEOLOGICAL SOCIETY OF THE PHILIPPINES.

  • Deposit

    VOL.XXXI, NO.3. SEPTEMBER 1977. PP.13-16.

  • Deposit

    PARINGIT,R.U. "METALLURGICAL CHROMITE DEPOSITS AND EXPLOR-

  • Deposit

    ATION CONCEPTS APPLIED AT ACOJE, SANTA CRUZ, ZAMALES

  • Deposit

    PROVENCE". 5TH SYMPOSIUM ON MINERAL RESOURCES DEVEL-

  • Deposit

    OPMENT AND THE 24TH ANNUAL MINE SAFTEY CONFERENCE. NOV.

  • Deposit

    24, 1977. SECTION 1, PAPER NO.2 P.14.

  • Deposit

    PHILIPPINES BUREAU OF MINES. "CHROMITE IN THE PHILIPPINES".

  • Deposit

    1953. PP.261-267.

General comments

Subject category Comment text
Deposit FEED GRADE OF CR2O3 FROM CHROMITE IS 15-20 PERCENT. SURFACE OPERATION IS SMALL SCALE AND IS ONLY OPERATING DURING THE DRY MONTHS WHEN THE ROADS ARE IN GOOD CONDITION. IT IS ECONOMICAL TO MINE THE SURFACE BECAUSE THE GROUND IS LOOSE AND NO BLASTING IS REQUIRED. THE MILLED ORE IS SHIPPED TO JAPAN WHERE IT IS SMELTED. PLANT FOR THIS MATERIAL ARE IN PROGRESS AT PRESENT BUT THE MATERIAL HAS NOT BEEN ANALYZED IN THIS STUDY (1981). TOTAL PROPERTY CONSISTS OF 73 MINING CLAIMS OVER AN 8 KM N-S LENGTH AND INCLUDES THE DAWN AND AURORA PROSPECTS IN THE SOUTH SECTION. IT IS BELIEVED THAT THE REPORTED HIGH-GRADE ORE RESERVE (IN ANNUAL REPORT) JUST REFERS TO THE ACOJE MINE IN THE NORTH SECTION AND DOES NOT INCLUDE OTHER ORE BODIES AT DEPTH IN THE SOUTH SECTION. THE ACOJE CLAIMS ALSO CONTAIN NICKEL-PLATINUM SULFIDE ORE AT DEPTH AND PRODUCES THESE COMMODITIES SPORADICALLY DEPENDING UPON THE MARKET SITUATIONS. AS OF 1979 THE COMPANY HAD CONVERTED THEIR NICKEL ORE MILL FOR USE IN TREATING CHROMITE ORES. NI & PT ORES HAVE BEEN EVALUATED AND DESCRIBED UNDER A SEPARATE SEQUENCE NUMBER. STRIKE OF OREBODY: N45W; DIP IS SOUTH.

Reporter information

Type Date Name Affiliation Comment
Reporter 20-APR-1995 Boyle, Ed 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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