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Laisvall Mine

Producer in Sweden with commodities Lead, Zinc, Silver, Gold, Copper
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Geologic information

Identification information

Deposit ID 10073124
MRDS ID W018963
Record type Site
Current site name Laisvall Mine

Geographic coordinates

Geographic coordinates: 17.10343, 66.08206 (WGS84)
Relative position 96 KM FROM SLAGNAS, ADJACENT E AND W OF LAKE STOR - LAISAN.
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Geographic areas

Country
Sweden

Commodities

Commodity Importance
Lead Primary
Zinc Secondary
Silver Secondary
Gold Tertiary
Copper Tertiary

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Sphalerite Ore
Barite Gangue
Calcite Gangue
Fluorite Gangue
Sericite Gangue

Analytical data

Result 1975 ORE GRADED 3.2% PB. ONE OF THE OREBODIES, THE NORA NADOK, CONTAINS CONSIDERABLE AMOUNTS OF SPHALERITE. MOST OF THE ORES CONTAIN 1-2% BARITE AND 0.2-0.4% FLUORITE.

Mineral occurrence model information

Model code 196
USGS model code 30a
BC deposit profile E05
Deposit model name Sandstone-hosted Pb-Zn
Mark3 model number 76

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Upper Sandstone;Middle Sandstone
    Rock description Upper Sandstone;Middle Sandstone

Nearby scientific data

(1) 17.10343, 66.08206
ListMap

Geologic structures

Type Description Terms
Regional Ore Lies Below A Cambrian Nappe (Overthrust) Which Caused A Flexure Around The Caledonides
Local 2 Groups, One Almost Peppendicular, The Other Almost Parallel To The Bedding Plane, 1 Minor Fault

Ore body information

  • General form FLAT LYING BEDS, OFTEN EN ECHELON
    Strike NE
    Dip 5 DEG W 30 DEG S
    Thickness 33M
    Width 1600M
    Length 5000M

Controls for ore emplacement

  • Sandstone Was Favored Host Rock Due To Its Porosity And Fractures. Ore Is Richest Around Fault Zones

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Large
Significant No
Discovery year 1939
Discoverer Boliden A/B
Discovery method Ore-Mineral In Place
Year of first production 1942

Ownership information

  • Type Owner-Operator
    Owner Boliden Ab

Production statistics

  • Year 1959
    Period 1955-1959
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^9 G Ag/T, 0.46% Zn, 4.17% Pb
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Silver Silver 9g/mt
    Minor Ore Lead Lead 4wt-pct
    Major Ore Zinc Zinc 0wt-pct
  • Year 1968
    Material CON PB
    Accuracy Accurate
    Description Ap_Grade: ^77% Pb, 150 G Ag/T, 1.5% Zn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Conc. Silver Silver 150g/mt
    Minor Conc. Lead Lead 77wt-pct
    Major Conc. Zinc Zinc 2wt-pct
  • Year 1973
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^4% Pb
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Lead Lead 4wt-pct
  • Year 1974
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^0.56% Zn, 4.11% Pb
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Lead Lead 4wt-pct
    Major Ore Zinc Zinc 1wt-pct
  • Year 1975
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^4.5 % Pb, Proven
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Lead Lead 5wt-pct

Comments on the production information

  • 1968 ORE GRADED 4% PB, 0.15% ZN, 8 - 10 G/MT AG. MILL CAPACITY WAS 50,000 IN 1943, 500,000 IN 1957, 1.2 MILLION MT BY 1964. RECOVERY RATES FOR PB, AG, ZN IN 1968 WERE 96, 86, 87%, RESPECTIVELY

Reserves and resources

  • Type In-situ
    Estimate year 1959
    Demonstrated 28,000,000,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 4.5 wt-pct Lead Major 1959
  • Type In-situ
    Estimate year 1959
    Demonstrated 28,000,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 4.5 wt-pct Lead Major 1959
  • Type In-situ
    Estimate year 1985
    Total resources 80,000,000,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 4.3 wt-pct Lead Major 1985
    Zinc Zn 0.6 wt-pct Zinc Minor 1985
    Silver Ag 9 g/mt Silver Minor 1985
    Gold Au 0.1 g/mt Gold Trace 1985
    Copper Cu 0.01 wt-pct Copper Trace 1985

Comments on development

  • MILL.CAP: 1460 MET TONS ; ECON.YEAR: 1975 ; ECON.COM: 4000 MTPD MILL

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS W018963

Bibliographic references

  • Deposit

    WELLENIUS, LENNART, 1970, THE LAISVALL MINE; IN RAUSCH, D. O., MARIACHER, B. C. EDS., AIME SYMP. PB - ZN V 1 P. 327 - 345, 954 - 5

  • Deposit

    GRIP, ERLAND, 1960, THE LEAD DEPOSITS OF THE EASTERN BORDER OF THE CALEDONIDES IN SWEDEN; INT. GEOL. CONG. 21ST, REPT. 16 P. 149 - 159

  • Deposit

    MENZIE, W.D., AND MOSIER, D.L., 1985, GRADE, TONNAGE, AND LITHOLOGIC DATA FOR SEDIMENT-HOSTED SUBMARINE EXHALATIVE ZN-PB AND SANDSTONE-HOSTED PB-ZN DEPOSITS: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 85-206, 17 P.

  • Deposit

    MINING ANNUAL REVIEW, 1976, P. 505.

  • Deposit

    E/MJ, 1976, INTERNATIONAL DIRECTORY, P. 287.

  • Deposit

    GRIP, E., 1978, SWEDEN, IN BOWIE, S.H.U., KVALHEIM, A., AND HASLAM, H.W., EDS., MINERAL DEPOSITS OF EUROPE, VOLUME 1: NORTHWEST EUROPE: LONDON, THE INSTITUTION OF MINING AND METALLURGY AND THE MINERALOGICAL SOCIETY, P. 93-198.

  • Deposit

    VOKES, F.M., 1978, INTRODUCTION, IN BOWIE, S.H.U., KVALHEIM, A., AND HASLAM, H.W., EDS., MINERAL DEPOSITS OF EUROPE, VOLUME 1: NORTHWEST EUROPE: LONDON, THE INSTITUTION OF MINING AND METALLURGY AND THE MINERALOGICAL SOCIETY, P. 1-38.

  • Production

    MINING ANNUAL REVIEW, 1976; E/MJ, 1976; GRIP, 1960; GRIP, 1978

  • Reserve-Resource

    1959 ESTIMATE IS FROM GRIP, 1960. DEPOSIT SIZE ESTIMATE IS FROM MENZIE AND MOSIER, 1985.

General comments

Subject category Comment text
Deposit LOWER SANDSTONE IS 25 M THICK, UPPER SANDSTONE IS 6 - 8 M THICK. ORE IS VARIOUSLY DISTRIBUTED IN THIN BEDS IN THESE TWO FORMATIONS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1976 Schruben, Paul G. U.S. Geological Survey
Updater 01-NOV-1987 Orris, Greta J. U.S. Geological Survey