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Rocha Lead Deposit

Producer in Parana, Brazil with commodities Lead, Silver, Gold
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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. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Ownership information
  13. Reserves and resources
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10069025
MRDS ID W002307
Record type Site
Current site name Rocha Lead Deposit
Alternate or previous names Vein System Or Areas: Sao Francisco, Basseti, Egara, Matao, Esperanca

Geographic coordinates

Geographic coordinates: -49.12735, -24.72546 (WGS84)
Location accuracy 2000(meters)
Relative position ABOUT 20 KM SW OF ADRIANOPOLIS.

Site location context

Political divisions (FIPS codes)

Parana(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Parana

Comments on the location information

  • NEAR ROCHA CREEK, A TRIBUTARY OF THE RIBEIRA RIVER.

Commodities

Commodity Importance
Lead Primary
Silver Primary
Gold Secondary

Materials information

Materials Type of material
Anglesite Ore
Argentite Ore
Cerussite Ore
Chalcocite Ore
Chalcopyrite Ore
Galena Ore
Malachite Ore
Pyrite Ore
Pyromorphite Ore
Pyrrhotite Ore
Sphalerite Ore
Tetrahedrite Ore
Calcite Gangue
Fluorite Gangue
Quartz Gangue
Bornite Unknown

Analytical data

Result AVERAGE OF SOME VEINS: 1.8 G/MT AU, 479 G/MT AG, 0.49% CU, 26.95% PB, 0.02% ZN

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite
    Rock unit name Middle Member Of Acungui Formation
    Rock description Middle Member Of Acungui Formation

Nearby scientific data

(1) -49.12735, -24.72546
ListMap

Economic information

Ore body information

  • Name SAO FRANCISCO III
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.03M
    Length 30M
  • Name SAN FRANCISCO II
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.02M
    Length 100M
  • Name SAN FRANCISCO I
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.01M
    Length 50M
  • Name BASSETI II - SUL
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.02M
    Length 100M
  • Name BASSETI I - BIS
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.05M
    Length 120M
  • Name BASSETI 0
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.06M
    Length 180M
  • Name GAVETA III
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.03M
    Length 160M
  • Name C
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.01M
    Length 80M
  • Name D
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.03M
    Length 110M
  • Name NOVA ESPERANCA
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.02M
    Length 70M
  • Name EGUARA
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.02M
    Length 40M
  • Name MATAO I
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.02M
    Length 70M
  • Name MATAO II
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.01M
    Length 70M
  • Name BASSETI II
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.05M
    Length 40M
  • Name ESPERANCA
    Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0M
    Length 40M
  • Strike N20W}N20W}N10W}N-S}N15W}N5-20W}N20W}N15W}N25W}N25W}N65W}N40W}N10W, N35W}N75W}N-S}N-S
    Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.03M
    Length 400M
  • Dip 55E}74E}60E}68E}65E}65W}70W}60W}70E}70E}60SW}80NE}75E, 80W}50N}74E}58E
    Thickness 0.05M
    Length 200M

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Mining district

District name Vale Do Ribeira

Ownership information

  • Type Owner-Operator
    Owner Piumbum S/A ; Rocha Comercio E Exploracao De Minerios Ltd (1979 - )
    First year 1960
    Last year 1979

Comments on the production information

  • IN 1978 PRODUCED ABOUT 1000 MT/MONTH OF 7% PB, AND IN 1968 PRODUCED ABOUT 5000 MT/MONTH OF 4.5% PB. IN 1984, PRODUCED ABOUT 4500 MT/MONTH.

Reserves and resources

  • Type In-situ
    Estimate year 1984
    Total resources 132000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 5 wt-pct Lead Major 1984
    Silver Ag 130 g/mt Silver Major 1984

Comments on the reserve resource information

  • ORE (1984) IS MEASURED RESERVE.

Comments on the workings information

  • ROOM AND PILLAR MINING, FLOTATION CONCENTRATION.

Reference information

Bibliographic references

  • Analytical Data

    ACCIARI AND OTHERS (1988).

  • Deposit

    R.H. NAGELL AND M.G. WHITE, 1974, LEAD-ZINC RESOURCES IN BRAZIL

  • Deposit

    ACCIARI, D. JR., RIBEIRO, J.C., DIAS, J.R.M., AND BRANDAO, W., 1988, MINA DE CHUMBO E PRATA DO ROCHA, ADRIANOPOLIS, PARANA, IN PRINCIPAIS DEPOSITOS MINERAIS DO BRASIL, EDS., C. SCHOBBENHAUS AND C.E.S. COELHO: MINISTERIO DAS MINAS E ENERGIA, BRASILIA, V. III, P. 135-145.

General comments

Subject category Comment text
Deposit HOST ROCK IS A UNIT OF THE ACUNGI GROUP. ORE MINERALIZED DURING PRECAMBRIAN (1100 M.Y.)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-74 Warfle, Thomas M. U.S. Geological Survey
Updater 18-JUL-94 Page, Norman J. U.S. Geological Survey

Beyond USGS

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

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