Rosia Poieni

Plant in Hunedoara, Romania with commodities Copper, Molybdenum

Geologic information

Identification information

Deposit ID 10279623
MAS/MILS ID 4850450001
Record type Site
Current site name Rosia Poieni
Alternate or previous names Rosia Poieni - Deva

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 23.16865, 46.31529 (WGS84)
Elevation 750
Location accuracy 10000(meters)
(click for info)

Geographic areas

Country State
Romania Hunedoara

Commodities

Commodity Importance
Copper Primary
Molybdenum Secondary

Materials information

Materials Type of material
Copper Unknown
Gold Unknown
Molybdenite Unknown
Pyrite Unknown

Nearby scientific data

Ore Body (1) 23.16865, 46.31529

Ore body information

  • Thickness 50M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 UNKNOWN
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control UNKNOWN
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Date of Last Modification 920612

Comments on the geologic information

  • THE MINERALIZATION OF THE OREBODY AT THE ROSIA POIENI MINE IS DISSEMINATED IN ANDESITIC SUB-VOLCANIC INTRUSIVES WHICH ARE HOSTED BY CRETACEOUS SEDIMENTS. THE UPPER PORTION OF THE MINERALIZED ZONE IS OXIDIZED. THE HEIGHT OF THE MINERALIZATION IS NOT WELL DETERMINED BUT BELIEVED TO VARY FROM TEN METERS TO HUNDREDS OF METERS. (1989) AS REPORTED IN 1989, HEAD GRADES FOR THE COPPER AT THE MINE AVERAGE APPROXIMATELY .35%. THE MINE ALSO PRODUCES MOLYBDENUM AS A MINOR BYPRODUCT WITH AN AVERAGE HEAD GRADE OF APPROXIMATELY .10%. IN 1989, MOST ROMANIAN COPPER DEPOSITS WERE CLASSIFIED AS GENERALLY LOW GRADE ORES AND WERE CONSIDERED MINERALOGICALLY COMPLEX.

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1980
Mining method Open Pit
Year of first production 1983
Plant type Smelter
Milling method Flotation

Mining district

District name West Carpathian Mt

Mineral rights holdings

Type of mineral rights Unknown
Type of mineral rights Unknown
Type of mineral rights Unknown

Ownership information

  • Type Owner
    Owner Government Of Romania
    Interest 100
    Home office Romania
    Year 1990
  • Type Operator
    Owner Department Of Nonferrous Metals - Deva Mining Complex
    Home office Romania
    Year 1990

Comments on the ownership information

  • OSIA POIENI MINE, OWNED BY THE GOVERNMENT OF ROMANIA, IS OPERATED BY THE DEVA MINING COMPLEX.

Production statistics

  • Year 1984
    Description .35% Cu Ore Throughput 2250000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 2,250,000mt 0wt-pct
  • Year 1985
    Description .35% Cu Ore Throughput 2250000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 2,250,000mt 0wt-pct
  • Year 1986
    Description .35% Cu Ore Throughput 2250000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 2,250,000mt 0wt-pct
  • Year 1987
    Description .35% Cu Ore Throughput 4800000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 4,800,000mt 0wt-pct
  • Year 1988
    Description .35% Cu Ore Throughput 4800000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 4,800,000mt 0wt-pct
  • Year 1989
    Description .35% Cu Ore Throughput 4800000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 4,800,000mt 0wt-pct
  • Year 1990
    Description .35% Cu Ore Throughput (Projected) 4800000 Metric Tons Of Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 4,800,000mt 0wt-pct

Comments on the production information

  • AS OF 1989, THE AVERAGE GRADE FOR THE COPPER CONCENTRATE WAS 18% CU. THE FLOTATION RECOVERY RATE FOR COPPER WAS VERY POOR. THE STATE METALLURGICAL RESEARCH ORGANIZATION DETERMINED THE RECOVERY AT 40% WHILE THE MINISTRY OF MINING OFFICIALS REPORTED A 65% RECOVERY RATE. THE DIFFERENCES ARE ATTRIBUTED TO OXIDATION OF THE ORE IN THE UPPER PORTIONS OF THE DEPOSIT WHICH WERE CURRENTLY BEING EXPLOITED. CONCENTRATE PRODUCTION 1984 - 1990 (@18% CONTAINED CU): 1984 15,000 MT CONC. 1985 20,000 MT CONC. 1986 20,000 MT CONC. 1987 35,000 MT CONC. 1988 40,000 MT CONC. 1989 40,000 MT CONC. 1990 40,000 MT CONC. MO CONCENTRATES ARE TREATED AT A SMALL HYDROMETALLURGICAL PLANT LOCATED AT MOLDOVA NOUA (NEAR DEVA) (AS OF 1989). AS OF 1989, CONCENTRATES OF CU, PYRITE, AND MO WERE THE THREE PRIMARY PRODUCTS PRODUCED BY ROSIA POIENI.

Reserves and resources

  • Type In-situ
    Estimate year 1990
    Demonstrated 356,000,000mt ore
    Indicated 356,000,000mt ore
    Total resources 356,000,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.34 wt-pct Copper Major 1990
    Molybdenum Mo 0.006 wt-pct Molybdenum Minor 1990

Comments on the reserve resource information

  • TOTAL SURFACE AREA REPORTED IN 1989, 39 SQ MI, INCLUDES ALL PROPERTIES IN THE ROSIA AREA. TOTAL RESERVES FOR ROSIA POIENI, REPORTED AS 250,000,000 MT, IS AN AVERAGE OF THE TOTAL RESERVES BELIEVED TO BE IN THE ROSIA POIENI AREA (QUOTED AT 200,000,000 TO 300,000,000 MT). NOTE: THE CRU REPORT CONTAINS A PRINT ERROR, UNDER-REPORTING RESERVES BY A FACTOR OF 1,000. PROVEN RESERVES, AS LISTED IN 1992 BY THE MINING JOURNAL, ARE PROBABLY INDICATED (DEMO) RESERVES FOR DATABASE PURPOSES. IT IS PROBABLE THAT "PROVEN" MAY BE TOO OPTIMISTIC.

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Avg. Bench Height (meters) 15
    Capacity 16000
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 20550000
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 3
    Year of Information 1990

Comments on other economic factors

  • THE 1989 CRU REPORT INDICATED THAT ALL EXTRACTED COPPER ORE IS TRANSPORTED TO THE ZLATNA COPPER SMELTER, NORTH OF THE MINE.
  • THE CONCENTRATOR CAPACITY WAS DETERMINED TO BE 14,545 MTPD. IN 1992, THE MINING JOURNAL INDICATED A 9,000,000 MTPY TREATMENT CAPACITY WITH 45% COPPER RECOVERY.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 4850450001

Bibliographic references

  • Geology

    GEOMIN, GENERAL PRESENTATION OF THE GEOLOGICAL FRAMEWORK

  • Geology

    AND ORE PROSPECTS OF ROMANIA - SUMMARY, OCT. 29, 1991.

  • Geology

    HURLBUT, CORNELIUS S., DANA'S MANUAL OF MINERALOGY,

  • Geology

    EIGHTEENTH EDITION, 1971.

  • Deposit

    HANNOVER, BUNDESANSTALT FUR GEOWISSENSCHAFTEN UND

  • Deposit

    ROHSTOFFE, RUMANIEN, DEC. 1977.

  • Deposit

    MI ATLAS OF EASTERN EUROPE, CENTRAL INTELLIGENCE AGENCY,

  • Deposit

    AUGUST 1990.

  • Production

    MINERAL FACTS AND PROBLEMS, UNITED STATES DEPARTMENT OF

  • Production

    THE INTERIOR, BUREAU OF MINES BULLETIN 675, EDITION 1985.

  • Reserve-Resource

    MINING JOURNAL, NAVAN'S EASTERN EUROPEAN VENTURES,

  • Reserve-Resource

    MAY 8, 1992.

  • Deposit

    COMMODITIES RESEARCH UNIT LIMITED, THE BASE METAL

  • Deposit

    INDUSTRIES OF EASTERN EUROPE, NOV. 1990.

  • Deposit

    BOMSEL AND VON HIRSCHHAUSEN, THE MINING AND

  • Deposit

    METALLURGICAL INDUSTRIES OF EASTERN EUROPE,CERNA, VOL. 1,

  • Deposit

    VOL. 2, VOL. 3, JULY 1991.

Reporter information

Type Date Name Affiliation Comment
Reporter 10-MAR-97 Porter, Kenneth E. U.S. Bureau of Mines