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Irahuan Venture/Macasset/Peak

Past 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. 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. Reserves and resources
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10303996
MAS/MILS ID 5650270017
Record type Site
Current site name Irahuan Venture/Macasset/Peak
Alternate or previous names Irahuan, Palawan Consolidated

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 118.62437, 9.83392 (WGS84)
Elevation 400
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Philippines(country)

Asia(continent)

Land(continent)

Geographic areas

Country
Philippines

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Unknown
Pyroxene Unknown
Serpentine Unknown

Nearby scientific data

Ore Body (1) 118.62437, 9.83392
ListMap

Economic information

Ore body information

  • Thickness 6M
    Length 1500M
    Depth to top 0.2M
    Field Value
    MAS Matrix # 1
    MAS Column # 2
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 LENTICULAR
    Type of Orebody #2 PLACER
    Shape of Orebody #2 IRREGULAR
    Type of Orebody #3 OTHER
    Shape of Orebody #3 TABULAR
    Primary mode of Origin MAGMATIC DIFFER
    Secondary mode of Origin SEDIMENTATION
    Primary Ore Control LITHOLOGY
    Secondary Ore Control IGNEOUS
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 OTHER
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. .2
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830708
  • Area 1053HA
    Field Value
    Total Surface Area (HA) 1053
    Date of Last Modification 910418

Comments on the geologic information

  • CHROMITE ALSO OCCURS AS MASSIVE, NODULAR, BRECCIATED, OR BANDED ORE BODIES. THE WALL ROCK IS STRONGLY ALTERED BY SERPENTINIZATION

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Metallic
Significant Yes
Discovery year 1951
Mining method Strip-Hillside

Mining district

District name Malinao

Mineral rights holdings

Type of mineral rights State Lease

Ownership information

  • Type Owner-Operator
    Owner Palawan Consolidated Mining Co.
    Interest 100
    Home office Philippines
    Year 1981

Comments on the ownership information

  • THE CHROMITE DEPOSIT IS LEASED TO PALAWAN CONSOLIDATED MINING COMPANY, INC. WHICH IS A PRIVATELY OWNED PHILIPPINE FIRM. THE OWNERS OF THE CHROMITE LEASES INCLUDE PALAWAN SYNDICATE VENTURES INC. (PSV) AND MR. E.G. VITO. BOTH FIRMS BY TWO SEPARATE OPERATING AGREEMENTS EXCECUTED ON AUGUST 22 1975, OFFERED THE LEASES TO PALAWAN CONSOLIDATED. PSV AND MR. VITO ARE REPRESENTED IN A JOINT VENTURE FIRM KNOWN AS INDUSTRIAL ENTERPRISES, INC.

Reserves and resources

  • Type In-situ
    Estimate year 1987
    Demonstrated 1647000mt ore
    Total resources 1647000mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 15.6 wt-pct Chromium Major 1987

Comments on the reserve resource information

  • BETWEEN 2,000 AND 4,000 MT OF CHROMITE PRODUCTS PRODUCED IN 1980 BUT NO PRODUCTION BY 1981/1982. PALAWAN CONSOLIDATED IS (WAS) THE OPERATING COMPANY OF THE JOINT VENTURE. FOR ANALYSIS: 164,650 MTPY ROM (13.6 PCT MASSIVE ORE, 25.3 PCT BANDED ORE AND 61.1 PCT SAND ORE) FOR: 19,300 MTPY LUMP AT 52.3 % CR2O3, 13,060 MTPY CONCS.AT 48 % CR2O3 AND 6,230 MTPY CONCS.AT 46 % CR2O3. CHROMITE MR,CHROMITE MET AND CHROMITE MC , RESPECTIVELY.
  • AS OF 1978, PALAWAN SYNDICATE VENTURES AND E.G. VITO OWNED 13 MINING CLAIMS, ONLY 3 OF WHICH HAD BEEN EXPLORED IN DETAIL. RESULTS OF EXPLORATION OF THESE 3 LEASES WERE 232,117 METRIC TONS OF SAND ORE AT 3.94% CR2O3; 33,068 METRIC TONS OF "BANDED" ORE AT 25.05% CR2O3 AND AN INSIGNIFICANT AMOUNT OF MASSIVE ORE. THE TONNAGE IN Q-MATRIX 1 REPRESENTS THE TONNAGE TO BE EXPECTED FROM ALL 13 CLAIMS ASSUMING THAT THE SAME PROPORTIONS AND AMOUNTS OF ORE ARE FOUND ON THE UNEXPLORED CLAIMS. M9C4=M1C2.
  • 1/89 INSITU DEMO. TONNAGE IS A COMPOSITE OF 3 ORE TYPES: MASSIVE ORE, BANDED ORE AND SAND ORE.

Workings at the site

  • Type of workings Surface
    Area 1053HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Percent Waste Rock 0
    Avg. Overburden Thickness .2
    Primary Material Cover SAND, GRAVEL
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 3
    Max. Pit Slope (degrees) 30
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 3
    Year of Information 1981

Reference information

Bibliographic references

  • Deposit

    BACANA,M.M., JR. AND TARONGOY, H.C. "MINING METHODS OF

  • Deposit

    PHILIPPINE CHROMITE DEPOSITS." PHILIPPINES BUREAU OF

  • Deposit

    MINES. 1978.

  • Deposit

    CARRANCEJA, J.O.,JR. "REPORT ON THE EVALUATION OF THE

  • Deposit

    CHROMITE DEPOSIT OF PALAWAN CONSOLIDATED MINING

  • Deposit

    COMPANY, INC. OF BO. IRAHUAN, PUERTO PRINCESA CITY."

  • Deposit

    INTERNAL REPORT OF THE PHILIPPINE BUREAU OF MINES. 1978

  • Deposit

    CHAMBER OF MINES NEWSLETTER. JUNE 1980. P.1.

  • Deposit

    FERNANDEZ, H.E. "CHROMITE DEPOSITS OF CENTRAL PALAWAN." 2ND

  • Deposit

    GEOLOGICAL CONVENTION AND 1ST

  • Deposit

    SYMPOSIUM OF THE GEOLOGICAL MINERAL RESOURCES OF THE

  • Deposit

    PHILIPPINES AND NEIGHBORING COUNTRIES. VOL.1. JANUARY

  • Deposit

    11-14, 1967. PP.76-88B.

Reporter information

Type Date Name Affiliation Comment
Reporter 03-SEP-92 Rfb 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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