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Liganga

Occurrence in Tanzania with commodity Vanadium
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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. Economic information about the deposit and operations
  9. Links to other databases
  10. Bibliographic references
  11. General comments
  12. Reporter information

Geologic information

Identification information

Deposit ID 10024867
MRDS ID ISM0619
Record type Site
Current site name Liganga

Geographic coordinates

Geographic coordinates: 34.70124, -9.83091 (WGS84)
Relative position 60 KM S OF NJOMBE, 120 KM S OF RAILWAY LINE (TAZARA0.

Site location context

Political divisions (FIPS codes)

Tanzania(country)

Africa(continent)

Land(continent)

Geographic areas

Country
Tanzania

Comments on the location information

  • THE PROCESSING PLANT AND MAIN SAI-LAO DEPOSIT ARE LOCATED 30 KM EAST OF THE CITY OF QIONGHAI ON THE CENTRAL EAST COAST OF THE ISLAND. HOWEVER SANDS ARE BROUGHT FROM DISTANCES 80 KM TO THE PLANT.
  • THE DEPOSIT OCCURS IN THE PHYSIOGRAPHIC PROVINCE OF SOUTHERN TANZANIA.

Commodities

Commodity Importance
Vanadium Critical Primary

Comments on the commodity information

  • TITANIUM
  • VANADIUM

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Anorthosite
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) 34.70124, -9.83091
ListMap

Economic information

Comments on the geologic information

  • ; ILMN + ZRCN + MNZT + RUTL + ANTS (+ QRTZ); MESOZOIC GRANITE IS THE LIKELY SOURCE ROCK. IN SOME PLACES THE SAI-LAO DEPOSITS CONSISTS OF SEVERAL DIFFERENT, ROUGHLY PARALLEL STRANDS, TYPICALLY 5 M DEEP. THE SANDS CONTAIN 2-3% HEAVY MINERALS BY WEIGHT, MOSTLY COMPOSED OF ILMN
  • ; MGNT (55%), ILMN (22%), SPNL (10%), CLRT (13%); THE 4 PRINCIPAL ORE BODIES ARE ALIGNED ALONG A RIDGE OVER A DISTANCE OF 6KM LENTICULAR, ELONGATED AND DYKE-LIKE DEPOSITS.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Comments on the production information

  • ILMN - 20 000 TPA GRADING 52% TIO2; RUTL - 65 TPA GRADING 90% 33%DUE TO LACK OF DEMAND THE ILMN PRODUCTION IN RECENT YEARS HAS DROPPED FROM AS HIGH AS 15 000 TPA IN THE PAST. SMALL QUANTITIES OF ZIRCON, MONAZITE ARE ALSO PRODUCED. A 75% RECOVERY EFFICIENCY IS ASSUMED. THE PLANT WAS MOVED TO PRESENT SITE WITH UPGRADED CAPACITY IN 1973. PC1 ASSUMES 10 YEARS AT 10 000 TPA ILMENITE; PC2 ASSUMES 10 YEARS AT 40 TPA RUTILE.

Comments on the reserve resource information

  • BASED ON EARLY 1960'S DRILLING PROGRAM WHICH INDICATED 20 MIL TONNES ILMN FOR WHOE HAINAN ISLAND. THIS HAS BEEN DIVIDED INTO THE FOUR POTENTIAL PROCESSING PLANTS ON THE ISLAND. RUTILE ESTIMATE BASED ON INOWN RUTL:ILMN RATIO OF 1:0

Comments on development

  • NON-GEOLOGIC CONSTRAINTS ON DEVELOPMENT OR EXPANSION IN 1-5 YRS. ( POLITICAL RESISTANCE FROM FARMERS COLLECTIVES WHO BENEFIT FROM THEIR MINING BY HAND AND WOULD OPPOSE MECHANIZED MINING.). ASSESSMENT(MECHANIZED MINING IN NEAR FUTURE US UNLIKELY AS NOTED ABOVE. PLANT HAS ADEQUATE DOCK FACILITIES TO SHIP CONCENTRATES. HYDROELECTRIC POWER WILL SOON REPLACE THE PRESENT STEAM GENERATED ELECTRICITY AT NEARLY HALF THE COST. THE PLANT IS A SHOW CASE OPERATION IN TERMS OF EFFICIENCY OF OPERATION, ENVIRONMENTAL IMPACT AND COMMUNITY SPIRIT.); 600 TONS OF ZIRCON AT 65% ZR92 AND 75 TONS OF MONAZITE AT 6-7% THO2 ARE ALSO PRODUCED IN THE MAXIMUM PRODUCTION YEARS.
  • NON-GEOLOGIC CONSTRAINTS ON DEVELOPMENT OR EXPANSION IN 1-5 YRS. (). ANALYTICAL DATA (GENERAL): AVERAGE FE 48%, TI 12,5%, V 0,6%.

Reference information

Bibliographic references

  • Deposit

    BGR, INTERNAL INFORMATION, 1974

  • Deposit

    UN 1970, SURVEY OF WORLD IRON ORE RESOURCES.

General comments

Subject category Comment text
Deposit Discovery Year: HAS BEEN KNOWN AT LEAST SINCE WWII.
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.). FARMERS MINE THE SAND BY HAND AND THEN SEPARATE HEAVY MINERALS WITH A SIMPLE SLUICE NONE
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.).
Deposit First Production Year: INACTIVE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1986 Krauss, Ulrich H. Bundesanstalt Fuer Geowissenschaften und Rohstoffee (Germany)
Reporter 01-FEB-1986 Rossouw, Cindy Geological Survey of South Africa

Beyond USGS

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

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