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  3. Mineral Resource Data System (MRDS)

Patchway/Brompton

Producer in Zimbabwe with commodities Gold, Silver
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Geologic information

Identification information

Deposit ID 10232115
MAS/MILS ID 7960150058
Record type Site
Current site name Patchway/Brompton

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: 29.80965, -18.25531 (WGS84)
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Geographic areas

Country
Zimbabwe

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Nearby scientific data

Main Entrance (1) 29.80965, -18.25531
ListMap

Ore body information

  • Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 TABULAR
    Date of Last Modification 861204

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant Yes
Milling method Hydrometallurgy Unspecified

Ownership information

  • Type Owner-Operator
    Owner Rio Tinto Mining (Zimbabwe) Ltd
    Interest 100

Reserves and resources

  • Type In-situ
    Estimate year 0
    Demonstrated 860,000mt ore
    Indicated 860,000mt ore
    Total resources 860,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 14 g/mt Gold Major 0
    Silver Ag 4.3 g/mt Silver Minor 0

Comments on the reserve resource information

  • TWO MINES ABOUT 50 KM APART; MILL IS AT THE PATCHWAY MINE-- COORDINATES ARE OF PATCHWAY. ANALYZED FOR THE 1983 AVAILABILITY STUDY AT AN OUTPUT LEVEL OF 19,300 OZ AU (CIRCA 1982/83). IN 1986 PROD. 15,110 OZ AU FROM MILLING OF 78,000 MTPY ORE IN 1987: ABOUT 16,100 OZ AU FROM MILLING 84,000 MT ORE.EXPANSION TO 94,000 MT ORE FOR 1988. MAY UPDATE ANALYSIS FOR THE 1992 AU AVAILABILITY STUDY. RESERVE VALUES ARE OLD VALUES FROM 1983 STUDY.

Workings at the site

  • Type of workings Underground
    Overall depth 122M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method GOPHERING (COYOTING) 10-29
    Percent Waste Rock 23
    Percent Recovery 90
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics UNKNOWN
    Rock Support Chars. UNKNOWN
    Mine Support Chars. UNKNOWN
    Number of Shafts 1
    Length of Inclines (m) 1700
    Slope of Inclines 1
    1st Condition of Workings OPEN
    Capacity 230
    Capacity Units MT ORE/DAY
    Unit Production Cost 54.05
    Units of Production $/MT ORE
    Operating Days per Year 312
    Operating Shifts per Day 2
    Year of Information 1981

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 7960150058

Bibliographic references

  • Deposit

    DEKUN,N.THE MINERAL RESOURCES OF AFRICA.ELSEVIER PUBL.CO.

  • Deposit

    LONDON.1965.P.160.

  • Deposit

    DMA MAP SERIES 1501.SHEET SE 35-12.SCALE 1:250,000.

General comments

Subject category Comment text
Deposit ALL BULLION SOLD TO ZIMBABWE RESERVE BANK, THEN SENT TO RAND REFINERY LTD IN GERISTON, NEAR JOHNANNESBURG, S.A. REFINED AU AND AG RETURNED TO ZIMBABWE RESERVE BANK.

Reporter information

Type Date Name Affiliation Comment
Reporter 02-OCT-1992 Bakkala U.S. Bureau of Mines