Freedom Flats Deposit

The Freedom Flats Deposit is a gold and silver mine located in Mineral county, Nevada at an elevation of 7,201 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Freedom Flats Deposit
Secondary: Borealis Mine

Commodity

Primary: Gold
Primary: Silver
Secondary: Antimony
Secondary: Arsenic
Tertiary: Selenium
Tertiary: Copper
Tertiary: Lead
Tertiary: Mercury
Tertiary: Bismuth
Tertiary: Tellurium
Tertiary: Zinc
Tertiary: Nickel

Location

State: Nevada
County: Mineral
District: Borealis; Ramona; Lucky Boy

Land Status

Not available

Holdings

Not available

Workings

Type: Surface

Ownership

Owner Name: Echo Bay Exploration, Inc.
Home Office: 5250 Neil Road. Suite 300, Reno, Nv, 89502

Production

Year: 1989
Time Period: 1986-1989
Material type: ORE AU
Description: Cp_Grade: ^0.153 Opt Gold

Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Year First Production: 1986
Year Last Production: 1989
Discovery Year: 1986
Discovery Method: Other
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin
Physiographic Detail: Basin And Mountains

Mineral Deposit Model

Model Name: Epithermal quartz-alunite Au

Orebody

Not available

Structure

Type: R
Description: Walker Lane Structural Zone.

Type: L
Description: Freedom Flats Fault Zone Strikes Northeast And Dips Steeply Northwest. Movement Is Oblique Slip With Both 100-200 Ft. Of Normal And 500-1000 Ft. Of Left Lateral Displacement.

Alterations

Alteration Type: L
Alteration Text: Silicification, Oxidation, Argillization, Propylitization. Conduit For Hydrothermal Fluids Was 100-200 Ft. Wide Core Zone Of Silica Breccia With Abundant Iron Oxide Minerals. Silica Breccia Zone Narrows Downward And Grades Downward Into Oxidized Quartz-Sulfide And Unoxidized Quartz-Pyrite Alteration. Argillic And Propylitic Alteration Zones Develop Outward From Core. Barren Opal And Chalcedonic Silica Overlie Deposit.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Enargite
Ore: Chalcocite
Ore: Nagyagite
Ore: Cinnabar
Ore: Pyrrhotite
Ore: Sphalerite
Ore: Covellite
Ore: Niccolite

Comments

Comment (Reserve-Resource): NO NUMBERS GIVEN FOR AMOUNT OF RESERVES.

Comment (Development): TOTAL$: 1

Comment (Development): FREEDOM FLATS DEPOSIT DISCOVERED DURING A PEDIMENT DRILLING PROGRAM SOUTHWEST OF BOREALIS DEPOSIT. THE THIRD DRILL HOLE OF THE PROGRAM INTERSECTED THE MAIN HIGH-GRADE CORE. FREEDOM FLATS LIES ONLY 2000 FT. SOUTHWEST OF THE ORIGINAL BOREALIS DEPOSIT AND REMAINED UNDISCOVERED DESPITE SEVEN YEARS OF EXPLORATION IN THE DISTRICT. DRILLING PRIOR TO 1986 PROGRAM HAD DRILLED TO WITHIN 50 FT. OF SOUTHEASTERN EDGE OF FREEDOM FLATS, INTERSECTING THICK ALTERED INTERVALS BUT ONLY SCATTERED INTERVALS OF DETECTABLE GOLD. ; ECON.COM: OVERALL STRIPPING RATIO OF 9.8:1. CUT-OFF GRADE WAS 0.02 OPT GOLD.

Comment (Deposit): SURFACE PROJECTION OF DEPOSIT 1200 FT. BY 200-250 FT. MORE THAN 75% OF MINED OUNCES OF GOLD IN STEEPLY PLUNGING ZONE 400 FT. BY 150-200 FT. IN PLAN.

Comment (Commodity): AU OCCURS AS SUB-MICRON SIZE PARTICLES IN SULFIDE AND IRON OXIDE MINERALS. AG:AU RATIO RANGES <1:10 IN UPPER PORTION TO >10:1 AT DEPTH, AVERAGES 5:1. AS AND SB HIGHLY ANOMALOUS IN UPPER PORTION, DECREASE WITH DEPTH. CU, PB, ZN SLIGHTLY ENRICHED IN LOWER PORTION OF DEPOSIT.

Comment (Reserve-Resource): DISCREPANCY BETWEEN ORIGINAL RESERVE ESTIMATE (149,000 OZ. AU) AND TOTAL PRODUCTION (195,200 OZ. AU) ATTRIBUTED TO SMALL HIGH GRADE ORE LENSES NOT INTERSECTED BY DRILLING AND PROBLEMS WITH SAMPLING METHOD AT THE EXPLORATION DRILL RIG.

Comment (Location): FREEDOM FLATS LIES WITHIN THE LUCKY BOY DISTRICT AS DEFINED BY NEVADA BUREAU OF MINES AND GEOLOGY. IT ALSO LIES WITHIN THE RECENTLY DEFINED BOREALIS DISTRICT (ENG, 1991). OTHER DEPOSITS IN THE BOREALIS DISTRICT ARE BOREALIS, EAST RIDGE, NORTHEAST RIDGE, GOLD VIEW, DEEP ORE FLATS.

Comment (Production): FREEDOM FLATS WAS HIGHEST GRADE AND MOST PRODUCTIVE OF THE DEPOSITS MINED IN THE BOREALIS DISTRICT. MINED OUT IN 1989.

References

Reference (Deposit): ENG, T. 1991, GEOLOGY OF THE FREEDOM FLATS GOLD DEPOSIT, BOREALIS MINE, MINERAL COUNTY, NEVADA, GSN 1990 SYMPOSIUM PROCEEDINGS, P. 995-1019.

Reference (Deposit): NBMG, 1994, MI-1993

Reference (Production): ENG, T., 1991, GEOLOGY AND MINERALIZATION OF THE FREEDOM FLATS GOLD DEPOSIT, BOREALIS MINE, MINERAL COUNTY, NEVADA, GSN 1990 SYMPOSIUM PROCEEDINGS, P. 995- 1019. NBMG MI-1993

Nevada Gold

Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.