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Masinloc Chromite Operation

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. Host and associated rocks
  7. Nearby scientific data
  8. Geologic structures
  9. Economic information about the deposit and operations
  10. Mining district
  11. Ownership information
  12. Reserves and resources
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10024330
MRDS ID ISM0034
Record type Site
Current site name Masinloc Chromite Operation
Alternate or previous names Coto and Masinloc Mines, The Consolidated

Geographic coordinates

Geographic coordinates: 120.06599, 15.56675 (WGS84)
Elevation 610
Relative position ORE BODY

Site location context

Political divisions (FIPS codes)

Philippines(country)

Asia(continent)

Land(continent)

Geographic areas

Country
Philippines

Comments on the location information

  • NE OF KALRANGI VILLAGE

Commodities

Commodity Importance
Chromium Critical Primary

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite
    Rock unit name Zambales Ultramafic Complex
    Rock description Zambales Ultramafic Complex
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) 120.06599, 15.56675
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Harzburgite-Dunite Transition Zone In Ophiolite

Comments on the geologic information

  • ; CHROMITE OCCURS IN TABULAR FORMS (THICKNESS 6-10 M, LENGTH 45-280 M) IN 7 SUBPARALLEL STRATIGRAPHIC LEVELS IN THE SUKINDA MASSIF, A LAYERED ULTRAMAFIC STOCK STRIKING ENE. CHROMITE FORMS A 15 M THICK VERTICAL PROFILE WITH INTERBEDDED SERPENTINE. THE MASSIF IS INTRUDED INTO A QUARTZITE MEMBER OF AN IRON FORMATION AND CONSISTS OF AN OLDER, CHROMIUM-RICH (1250 M) AND A YOUNGER, CHROMIUM-POOR (450 M) SEQUENCE. THE REGION IS FOLDED, FORMING A LARGE SW-PLUNGING SYNCLINE. THE CHROMITE ORE BODIES ARE CONFORMABLE TO PRIMARY LAYERING. GRAIN SIZE DECREASES UPWARD, AS DO THE CR2O3 AND MGO PERCENTAGES. COMPLETE ALTERATION TO SERPENTINE OR TALC-SERPENTINE NEAR THE SURFACE. PGE CHEMISTRY SIMILAR TO PODIFORM-TYPE DEPOSITS.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1925
Year of first production 1932
Year of last production 1982

Mining district

District name Zambales

Ownership information

  • Type Operator
    Owner Consolidated Mines Inc.
  • Type Owner
    Owner Benguet Corp.

Comments on the production information

  • PRODUCTION DATA REPORTED AS DISTRICT TOTALS FOR BHIMTANAGAR MINE (CUTTACK DISTRICT).

Reserves and resources

  • Type In-situ
    Estimate year 1983
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 31 wt-pct Chromium Major 1983

Comments on the reserve resource information

  • R1M DATA REPORTED AS DISTRICT TOTALS FOR BHIMTANAGAR MINE (CUTTACK DISTRICT).

Comments on development

  • NON-GEOLOGIC CONSTRAINTS ON DEVELOPMENT OR EXPANSION IN 1-5 YRS. ( GOVERNMENT REGULATIONS; X ;GOVERNMENT MARKETING POLICIES CONTROL CHROMIUM MINING AND BAN THE EXPORT OF HIGH-GRADE LUMP ORES.). SIO2-RICH CHROMIUM ORE WITH CR/FE = 4.7:1

Reference information

Bibliographic references

  • Deposit

    DUKE, V. W. A., 1982, CHROMIUM--A MINERAL COMMODITY REVIEW: SOUTH AFRICA MINERALS BUREAU INTERNAL REPORT 86, 317 P. (C2, C14, L11, L1-L4, G9, G13, C17, C18, C5, REP4)

  • Deposit

    CONSOLIDATED MINES, INC., 1979, ANNUAL REPORT. (MODIFIED 1981 CONTRACTOR ESTIMATE USED BY PAUL THOMAS, USBM (1982).)

  • Deposit

    DELA CRUZ, S., 1981, WRITTEN COMMUN. (MASINLOC CHROMITE OPERATION, BENGUET CORP., PHILIPPINES). (C1, G13, REP4)

  • Deposit

    TEX REPORT, 1978, CHROME, IN 1978 FERRO ALLOY MANUAL: JAPAN, TEX REPORT.

  • Deposit

    THAYER, T. P. AND LIPIN, B. R., 1978, A GEOLOGICAL ANALYSIS OF WORLD CHROMITE PRODUCTION TO THE YEAR 2000 A.D.: AMERICAN INSTITUTE OF MINING, METALLURGICAL, AND PETROLEUM ENGINEERS, COUNCIL OF ECONOMICS PROCEEDINGS (FOR MEETING OF FEB. 26-MAR. 2), P. 143-152.

  • Deposit

    STOLL, W. C., 1958, GEOLOGY AND PETROLOGY OF THE MASINLOC CHROMITE DEPOSIT, ZAMBALES, LUZON, PHILIPPINE ISLANDS: GEOLOGICAL SOCIETY OF AMERICA BULLETIN, V. 69, NO. 4, P. 419-448. (S6, C18, PC2, PC3, PC8)

  • Production

    PA1 - PA5: REPORTER (83 09) PC1: REPORTER (83 09); PC2, PC3, PC8: RF6

General comments

Subject category Comment text
Deposit THIS RECORD WAS COMPILED FOR THE INTERNATIONAL STRATEGIC MINERALS INVENTORY. THE DATA WERE USED IN PREPARATION OF THE USGS CIRCULAR 930 SERIES OF REPORTS. MINERAL RESOURCE CATEGORIES AND CODES HEREIN ARE FROM THE INTERNATIONAL CLASSIFICATION SYSTEM RECOMMENDED BY THE UNITED NATIONS GROUP OF EXPERTS ON DEFINITIONS AND TERMINOLOGY FOR MINERAL RESOURCES. (SEE NATIONAL RESOURCES FORUM, V. 4, NO. 3, P. 307-313.).

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1982 Lipin, Bruce R. U.S. Geological Survey
Updater 01-SEP-1983 Lipin, Bruce R. U.S. Geological Survey

Beyond USGS

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

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