1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Masbate Island

Producer in Masbate, Philippines 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. Ownership information
  12. Production statistics
  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 10303965
MAS/MILS ID 5650190002
Record type Site
Current site name Masbate Island
Alternate or previous names No Alternate Names, Masbate

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 123.53255, 12.43368 (WGS84)
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Masbate(province)

Philippines(country)

Asia(continent)

Land(continent)

Geographic areas

Country State
Philippines Masbate

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Magnesite Unknown
Pyrite Unknown
Quartz Unknown

Nearby scientific data

Ore Body (1) 123.53255, 12.43368
ListMap

Economic information

Ore body information

  • Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 IRREGULAR
    Type of Orebody #2 DISSEMINATED
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control CONTACT ZONE
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 ADV ARGILLIC
    Type of Wallrock Alter. #2 SILICIFICATION
    Date of Last Modification 861212
  • Area 50HA
    Field Value
    Total Surface Area (HA) 50
    Date of Last Modification 910418

Comments on the geologic information

  • FOUR DISTINCT ROCK TYPES ARE PRESENT AT MASBATE: TUFFACEOUS AGGLOMERATES, ANDESITIC AGGLOMERATES, META- SEDIMENTARY ROCKS AND HORNBLEND AUGITE ANDESITE PORPHORY.

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Metallic
Significant Yes
Discovery year 1901
Mining method Open Pit
Milling method Hydrometallurgy Unspecified

Mining district

District name Aroroy

Ownership information

  • Type Owner-Operator
    Owner Atlas Consolidated Mining And Development Corp.
    Interest 100
    Year 1982

Production statistics

  • Year 1980
    Description Ore Milled 990500 Metric Tonnes Per Year
  • Year 1981
    Description Ore Milled 1211399 Metric Tonnes Per Year

Reserves and resources

  • Type In-situ
    Estimate year 1980
    Indicated 9284000mt ore
    Demonstrated 9284000mt ore
    Total resources 9284000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.35 g/mt Gold Major 1980
    Silver Ag 3.34 g/mt Silver Major 1980

Comments on the reserve resource information

  • WAS INCLUDED IN OLD 1984 AU AVAILABILITY STUDY. STILL IS A FAIRLY LARGE PRODUCER (83,000 OZ IN 1988) BUT NO UPDATED RESERVE AMOUNTS AVAILABLE. HAS POTENTIAL FOR UPDATING FOR INCLUSION IN THE 1992 AU AVAILABILITY STUDY.

Workings at the site

  • Type of workings Surface
    Area 18HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Percent Waste Rock 50
    Primary Material Cover SAND, GRAVEL
    Percentage 100
    Hardness of Ore SAND, GRAVEL
    Avg. Bench Height (meters) 0
    Max. Pit Slope (degrees) 45
    Capacity 3765
    Capacity Units MT ORE/DAY
    Unit Production Cost 5.82
    Units of Production $/MT ORE
    Operating Days per Year 330
    Operating Shifts per Day 3
    Year of Information 1982

Comments on other economic factors

  • ALL DORE BULLION IS SOLD TO THE REFINERY OF THE CENTRAL BANK, IN QUEZON CITY.
  • THE DILUTION OF THE ORE IS 7%.
  • EXPLORATION AND INFRASTRUCTURE COSTS ARE INCLUDED IN THE MINE CAP. TOTAL.

Reference information

Bibliographic references

  • Reserve-Resource

    ARGALL, G.O. MASBATE GOLD MINE REOPENS AFTER 25 YESRS.

  • Deposit

    ANNUAL REPORTS- ATLAS CONSOLIDATED MINING AND DEVELOPMENT

  • Deposit

    CORPORATION, 1979-81.

  • Deposit

    ARGALL, G.O. MASBATE FOLD MINE REOPENS AFTER 25 YEARS.

  • Deposit

    WORLD MINING, NOV. 1980, PP. 35-39.

  • Deposit

    PIZARRO, R.S. AND ANTONIO, F.V. THE CARBON-IN-PULP PLANT

  • Deposit

    OF THE MASBATE GOLD OPERATIONS, PHILLIPINES. PREPRINT

  • Deposit

    81-28, AIME ANNUAL MEETING, CHICAGO, 1981, 9 PP.

  • Deposit

    MASBATE GOLD OPERATION. ATLAS CONSOLIDATED MINING AND

  • Deposit

    DEVELOPMENT CORPORATION, COMPANY BROCHURE, 1982.

  • Deposit

    PHILLIPINE GOLD. MINING JOURNAL, MAY 5, 1979, P. 337.

  • Deposit

    GOLD MINING ANNUAL REVIEW, PHILLIPINES, 1981, P. 460.

  • Deposit

    ELEVATORSKI, E.A. GOLD MINES OF THE WORLD, MINOBRAS.

  • Deposit

    1981, PP. 98-101.

  • Deposit

    GOLD- MINERAL POLICY BACKGROUND. PAPER NO. 12, MINISTRY

  • Deposit

    OF NATURAL RESOURCES, ONTARIO, MARCH 1981, P. 136.

  • Deposit

    WORLD MINES REGISTER. 1979-1980, PP. 152-154.

  • Deposit

    OF MASBATE GOLD OPERATIONS, PHILIPPINES. PHILIPPINE SOCIETY

  • Deposit

    OF MINING ENGINEERING, VOL. IV (1), 1982, PP. 3-9.

Reporter information

Type Date Name Affiliation Comment
Reporter 23-SEP-96 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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