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Hilltop Zone

Plant in Alaska, United States with commodities Gold, Silver
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Geologic information

Identification information

Deposit ID 10185318
MRDS ID A015279
MAS/MILS ID 0020580018
Record type Site
Current site name Hilltop Zone
Alternate or previous names Billy Sunday, Ryan Lode, Bartholomae
Related records 10002808

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -147.99125, 64.86406 (WGS84)
Elevation 304
Location accuracy 500(meters)
(click for info)

Geographic areas

Country State
United States Alaska

Public Land Survey System information

Meridian Township Range Section Fraction State
Fairbanks 001 N 002 W 32 Alaska

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Nearby scientific data

Ore Body (1) -147.99125, 64.86406
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Map

Ore body information

  • Strike N25E
    Dip 60E
    Thickness 0M
    Depth to top 0M
    Width 17M
    Length 610M
    Area 20HA
    Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 SHEAR ZONE
    Shape of Orebody #2 IRREGULAR
    Type of Orebody #3 REPLACEMENT
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin OXIDATION
    Primary Ore Control FRACTURING
    Secondary Ore Control FAULTING
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 ADV ARGILLIC
    Type of Wallrock Alter. #2 SILICIFICATION
    Type of Wallrock Alter. #3 PYRITIZATION
    Strike And Dip N25E
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 20
    Date of Last Modification 881017

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Deposit size Small
Significant Yes
Discovery year 1911
Mining method Open Pit
Year of first production 1938
Plant type Beneficiation (Mill)
Plant subcategory Hydromet
Milling method Leach-Precipitation

Comments on exploration

  • ST. JOE AMERICAN PLANNING TO DRIVE INCLINED SHAFT TO BULK SAMPLE RYAN LODE. EAKINS, 1980, DNR-AK,MINE ACT. PAPER

Mining district

District name Fairbanks District

Mineral rights holdings

Type of mineral rights Private Lease
Type of mineral rights Located Claim

Land status

Ownership category Mixed

Ownership information

  • Type Operator
    Owner Gateway Mining Co.
    ID 5000365
    Year 1992
  • Type Owner
    Owner La Teko Resources, Ltd
    ID 5000365
    Interest 100
    Home office California
    Year 1992
    Last year 1997
  • Type Operator
    Owner Ryan Lode Mines, Inc.
    Home office Alaska
    Year 1996
  • Type Owner
    Owner Silverado Gold Mines Ltd.
    Home office Canada
    Year 1997
    First year 1997

Comments on the ownership information

  • OWNER ADDRESS: LA TEKO RESOURCES, LTD. 303,535 HOWE STREET VANCOUVER, B.C. CANADA V6C 2C2 8-97:SILVERADO IS THE OWNER AND/OR OPERATOR NOW.

Reserves and resources

  • Type In-situ
    Estimate year 1967
    Inferred 455,000mt ore
    Demonstrated 559,000mt ore
    Indicated 364,000mt ore
    Measured 195,000mt ore
    Total resources 1,014,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 13.6899 g/mt Gold Major 1967
  • Type In-situ
    Estimate year 1992
    Demonstrated 907,000mt ore
    Total resources 907,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2 g/mt Gold Major 1992
  • Type In-situ
    Estimate year 1992
    Demonstrated 2,700,000mt ore
    Total resources 2,700,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.3 g/mt Gold Major 1992
  • Type In-situ
    Estimate year 1996
    Demonstrated 13,223,125mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.9 g/mt Gold Major 1996
    Silver Ag 2.7 g/mt Silver Minor 1996

Comments on the reserve resource information

  • R1=M1C1 RESERVE MATRIX 1 USED TO CONSTRUCT QUANTITY MATRIX

Workings at the site

  • Type of workings Surface
    Area 20HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Swell Factor .25
    Percent Waste Rock 79
    Primary Material Cover HARD ROCKS
    Percentage 100
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 10
    Max. Pit Slope (degrees) 60
    Capacity 657
    Capacity Units MT ORE/DAY
    Unit Production Cost 21.66
    Units of Production $/MT ORE
    Operating Days per Year 138
    Operating Shifts per Day 2
    Year of Information 1988

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0020580018
USGS Mineral Resources Data System MRDS A015279 MAS references MRDS
Mine Safety and Health Administration MSHA MSHA 5000365

Bibliographic references

  • Ownership

    ALASKA KARDEX 058-008

  • Ownership

    ALASKA KARDEX 058-154

  • Ownership

    ALASKA KARDEX 058-156

  • Reserve-Resource

    DGGS IC 35, P. 8, 1992

  • Reserve-Resource

    HM SIT RPT 12 p. 1

  • Reserve-Resource

    LA TEKO RESOURCES LTD. 1995 ANNUAL REPORT, P.8.

  • Deposit

    B520c p. 33

  • Deposit

    B525b p. 207

  • Deposit

    B542i p. 193

  • Deposit

    B662o pp. 412-413

  • Deposit

    B692r p. 323

  • Deposit

    B712a pp. 12, 40

  • Deposit

    B714b p. 81

  • Deposit

    B722a p. 45

  • Deposit

    B739a p. 30

  • Deposit

    B755a p. 35

  • Deposit

    B773a p. 15

  • Deposit

    B810a p. 15

  • Deposit

    B813a p. 17

  • Deposit

    B824a p. 20

  • Deposit

    B836a p. 19

  • Deposit

    B844A pp. 18-19

  • Deposit

    B849B pp. 135-142

  • Deposit

    B868A p. 20

  • Deposit

    B917A p. 26

  • Deposit

    B926A p. 23

  • Deposit

    B933A p. 23

  • Deposit

    TDM1 p. 11

  • Deposit

    OF42 pp. 17-18

  • Deposit

    HM SIT RPT 12

  • Deposit

    OF324

  • Deposit

    P625D p. 17

  • Deposit

    BMOF23-72

  • Deposit

    MF410

  • Deposit

    IC8656

  • Deposit

    AMR 81-82 p. 16

  • Deposit

    SR31 p. 8

  • Deposit

    SR38 p. 10

  • Deposit

    MINING JOURNAL, V 321 N8234, 7-23-93, P.52.

  • Deposit

    MINING JOURNAL, V321 N8240, 9-3-93, P.157.

  • Deposit

    THE MINING RECORD, V105 N17, 4-27-94, P.7.

  • Deposit

    "DRILLING PROGRAM HIGHLIGHTS HIGH-GRADE GOLD AT SILVERADO'S

  • Deposit

    RYAN LODE GOLD DEPOSIT." FROM POINT CAST, 8-14-97.

  • Deposit

    "SILVERADO DRILLING CONTINUES TO DISCLOSE HIGH GRADE GOLD."

  • Deposit

    FROM POINT CAST, 8-19-97.

  • Deposit

    "MORE GOOD DRILL RESULTS; COARSE GOLD IN ORE POINTS TO GOOD

  • Deposit

    ECONOMICS." FROM POINT CAST, 8-26-97.

  • Deposit

    "SERIES 2 OF DETAILED DRILL RESULTS CONTINUES TO SHOW

  • Deposit

    ABUNDANT GOLD AND HIGH GRADES." FROM POINT CAST, 9-4-97.

Comments on the references

  • BU. MINES, JAN. 1967, RYAN LODE, HEAVY METALS SIT. RPT. 12

General comments

Subject category Comment text
Deposit MSHA MID 5000493 USGS CRIB A001062 USGS CRIB A001166. FIRST HEAP LEACH OPERATION IN ALASKA. BEGAN PROD. IN 1988. LA TEKO RESOURCES IS OWNER/OPERATOR. LOCATED NEAR FAIRBANKS. THE PROJECT IS LOCATED 10 MILES NW OF FAIRBANKS. THE CURRENT RESOURCE IS 2,400,000 OZ AU W/822,000 OZ AU RESERVE (742,00 PROVEN+ 80,000 PROBABLE)-(8-97). 8-97: THE COMPANY PLANS TO CONTINUE DRILLING INTO 1998 AS IT COMPLETES ITS FEASIBILITY WORK AND PRODUCTION PERMITTING. A HIGH PERCENTAGE OF THE AU IN THE ORE IS COARSE AU. EXTREMELY HIGH-GRADE GOLD ASSAYS HAVE BEEN REPORTED.

Reporter information

Type Date Name Affiliation Comment
Reporter 18-SEP-97 Buckingham, David A. U.S. Bureau of Mines