Lone Mountain Geology, History and More
•Download as PPTX, PDF•
0 likes•496 views
Lone Mountain is a property that has a history of mining and mineral exploration - this presentation covers the geology, history, and potential of one of Nevadas many mines
Recommended
Recommended
More Related Content
What's hot
What's hot (14)
Similar to Lone Mountain Geology, History and More
Similar to Lone Mountain Geology, History and More (20)
More from Mike Bingle-Davis
More from Mike Bingle-Davis (13)
Recently uploaded
Recently uploaded (20)
Lone Mountain Geology, History and More
- 1. LONE MOUNTAIN Mike Bingle-Davis 2020 Trojan, 1978 North American Minerals and Mining Elko County, Nevada
- 2. Lone Mountain - Location •Location • Geologic Setting • Tectonics • Geology • Stratigraphy / Depositional • Mining History • Rip Van Winkle Mine • Past investigations • Work summary • Results This Photo by Unknown Author is licensed under CC BY-SA
- 3. Location T37-38N R53E The Merrimack (Lone Mountain) district is located in Elko County, Nevada Approximately 25 miles northwest of Elko, Nevada. Southern end of the Independence Mountains 25 Miles NW Elko, NV
- 4. Location – Elevation Profile N S S N W E W E
- 5. Location T37-38N R53E Elko County, Nevada Independence – Jerritt Canyon trend Carlin Trend
- 6. Lone Mountain – Geology, Tectonics • Location •Geologic Setting • Tectonics • Geology • Stratigraphy / Depositional • Mining History • Rip Van Winkle Mine • Past investigations • Work summary • Results
- 7. Geologic Setting Late Devonian Blakey– Retrieved 8/2020
- 8. Inferred Devonian – Mississippian sequence of events in Nevada 1 Nevada Bureau of Mines, 1967 2
- 9. Inferred Devonian – Mississippian sequence of events in Nevada Nevada Bureau of Mines, 1967 3 4
- 10. Lone Mountain - Geology • Location •Geologic Setting • Tectonics • Geology • Stratigraphy / Depositional • Mining History • Rip Van Winkle Mine • Past investigations • Work summary • Results Penecontemporaneous fold. Slumped thin-bedded lime Mudstones,note horizontal attitude of beds overlying and truncating fold limb (Trojan, 1978)
- 11. Geology
- 12. Geology • PINK: Felsic phaneritic intrusive rocks • TAN: Platy limestone, dolomite, and chert • BLUE: Limestone and minor dolomite • OLIVE: Calcareous shale, siltstone, chert, quartzite, and greenstone • RED: Older silicic ash flow tuffs Crafford, A.E.J., 2007
- 13. Geology LaPointe, D.D., Tingley, J.V., Jones, R.B. (1990) VOLCANICS LOWER PLATEUPPER PLATE
- 14. Geology
- 15. Geology
- 16. Geology
- 17. Lone Mountain – Geologic Setting, Stratigraphy • Location •Geologic Setting • Tectonics • Geology • Stratigraphy / Depositional • Mining History • Rip Van Winkle Mine • Past investigations • Work summary • Results • Next Steps
- 18. Stratigraphic Columns of Pre-Mississippian Rocks in East-Central Nevada USGS, 2005 UPPER PLATE LOWER PLATE
- 19. Lone Mountain – Work Summary • Location • Geologic Setting • Tectonics • Geology • Stratigraphy / Depositional •Mining History • Past investigations / Gold Pricing • Rip Van Winkle Mine • Work summary • Results • Next Steps
- 20. History • Chain of Custody – Research, Analysis, and transactions • 1939 – 1942 : Rip Van Winkle Consolidated Mining Company (RVWCMC) • 1942 – 1943 : Nevada Bureau of Mines under RVWCMC • 1960s – Kirkwood (NAMMCO) and Huber Assemble Acreage • 1960s – Newmont Exploration Ltd. • 1977-1980 – Freeport / Moran • 1984-1985 – EXXON • 1987-1988 – Inspiration • 1989-1990 – Tenneco • 1992-1993 – Newmont (second time) • 1995 – Coredex • 1997 – Tri Origin (Homestake) • 1999 – Kennecott • 2006 – 2008 Teck Cominco • 2010 – NAMMCO Reports • 2012 – 2019 : Global Geoscience (GSC)
- 21. World gold charts www.sharelynx.com RipVan Winkle Consolidated Mining Co. 1939-1943 Kirkwood (NAMMCO) / Huber Acquire Ac. Newmont Exploration 1960s Freeport / Moran 1977-1980 1980s Exxon 1984-1985 Inspiration 1987-1988 Tenneco 1989-1990 Teck Cominco 2006-2008 INSET CHART – NEXT SLIDE 1990s Newmont 1992-1993 Cordex 1995 Tri Origin (Homestake) 1997
- 22. World gold charts www.sharelynx.com INSET CHART – NEXT SLIDE RipVan Winkle Consolidated Mining Co. 1939-1943 Kirkwood (NAMMCO) / Huber Acquire Ac. Newmont Exploration 1960s Freeport / Moran 1977-1980 1980s Exxon 1984-1985 Inspiration 1987-1988 Tenneco 1989-1990 Teck Cominco 2006-2008 1990s Newmont 1992-1993 Cordex 1995 Tri Origin (Homestake) 1997 Stock Market Crash 1929 Gold Reserve Act 1934 Dollar detached from Gold 1971 Recession – Fed Reserve contradictory monetary policy 1980
- 23. World gold charts www.sharelynx.com Teck Cominco 2006-2008 Tri Origin (Homestake) 1997 Kennecott 1999 Global Geoscience 2012-2019 1250.00
- 24. World gold charts www.sharelynx.com Teck Cominco 2006-2008 Tri Origin (Homestake) 1997 Kennecott 1999 Global Geoscience 2012-2019 2008 Financial Crisis 9/11 Attack China economic slowdown Strong Dollar 1250.00
- 25. History Nevada Bureau of Mines (1991)
- 26. History: RipVan Winkle Consortium Mining Co. 1939-1948
- 27. Year Silver, oz. Lead, lb. Zinc, lb. 1939-1942 420,512 3,075,595 2,306,460 1943 75,252 657,013 461,939 1944 27,536 168,544 201,908 1945 1,549 13,437 15,382 1946 7,335 58,199 92,727 1947 611 5,299 6,234 1948 6,028 50,425 55,737 TOTAL 538,823 4,028,512 3,140,387 History: RipVan Winkle Consortium Mining Co. 1939-1948 Smith, M.C. and Trengrove, R.R. – USDOI Bureau of Mines Report of Investigations 4605 300 LEVEL 500 LEVEL 600 LEVEL 700 LEVEL
- 28. History: Bureau of Mines Analysis 1939-1943 Smith, M.C. and Trengrove, R.R. – USDOI Bureau of Mines Report of Investigations 4605
- 29. History: Intermediary years… 1949- 2006 Lone Mountain – Teck Cominco 2006 Report; Smith, M. and Teck Cominco 2008 Carlin Deposits Hydrothermal circulation carbonates Dissolved or converted to sillicates Dolomite - Jasperoid Skarn Deposits Alteration of country rock Metasomatism in or around faults SEDEX Deposits Hydrothermal ore bearing fluids into a water bearing zone Jasperoid Gold Silica/hematite
- 30. Lone Mountain – Work Summary • Location • Geologic Setting • Tectonics • Geology • Stratigraphy / Depositional • Mining History • Rip Van Winkle Mine • Past investigations •Work summary • Results • Next Steps 700 feet
- 31. Lone Mountain – Work Summary Teck Cominco – 2008
- 32. Work Summary • 81 years of mining and data • 364 line miles of aeromagnetic • Gravity geophysics gradient array / HEM • 183 drill holes (84,690 feet) • 5227 soil samples • 2035 rock samples Tech Cominco 2007
- 33. Lone Mountain Skarn Penn Jasperoid S. Jasperoid Zone N. Ext. Lone Wolf Mine Skarn NE Jasperoid Zone Lone Mountain – Teck Cominco 2006 Report Lone Mountain – Work Summary
- 34. Lone Mountain – Work Summary • Location • Geologic Setting • Tectonics • Geology • Stratigraphy / Depositional • Mining History • Rip Van Winkle Mine • Past investigations • Work summary • Results •Next Steps This Photo by Unknown Author is licensed under CC BY-NC-ND
- 36. Sources Behl, R.J. (2018), Deformation of the tectonic erratics at Henderson Summit, Vinini Creek, Mineral Hill, and Lone Mountain in Eureka County, Nevada – Masters Thesis, California State University (56pp). Berger, V.I., Theodore, T.G. (2005), Implications of Stratabound Carlin-Type Gold Deposits in Paleozoic Rocks of North-Central Nevada: Slide Presentation, USGS 2005 Crafford, A.E.J. (2007), Geologic Map of Nevada: U.S. Geological Survey Data Series 249, 1 CD-ROM, 46 p., 1 plate; Scale 1:250,000. Extended unit descriptions taken from pamphlet that accompanies geologic data/map. https://pubs.er.usgs.gov/publication/ds249 LaPointe, D.D., Tingley, J.V., Jones, R.B. (1990), Mineral Resources of Elko County, Nevada, Nevada Bureau of Mines and Geology Bulletin 106, (239 pp.) Late Devonian Blakey, Retrieved 8-2020; http://geology.isu.edu/Alamo/devonian/antler_orogeny.php Roberts, R.J., Montgomery, K.M., Lehner, R.E. (1967), Geology and mineral resources of Eureka County, Nevada, Nevada Bureau of Mines Bulletin 64, (152pp). Trojan, W.R. (1978), Devonian stratigraphy and depositional environments of the northern Antelope Range, Eureka County, Nevada – Masters Thesis, Oregon State University (134pp).
- 37. Questions?
Editor's Notes
- Mike Bingle-Davis Work for Kirkwood Oil and Gas and in the context of this presentation: NAMMCO - North American Mining and Minerals Corporation Really like this photo – Wrong Lone Mountain Knew of two, the one west of Toonpah in Ely County Nevada and our location in Elko County Another Lone Mountain in Eureka to the south – huge location for zinc
- Talk not meant to be super technical An overview Out of my areas of expertise, worked 5 years in environmental, four years in uranium and six years in oil and gas Where is Lone Mountain Tectonically what was happening to the area Geologically what is there and how it got there Stratigraphy of Lone Mountain Exploration and investigations Works results and next steps
- Lone Mountain – known as Nannies Peak Elko county Nevada approx. 25 miles NW of Elko Southern end of the Independence Mountains
- South to North Around 30% slope on both sides West to East Eastern side gentle, around 5% slope to 24% toward the peak Western side sharp contrast with 60% slopes, flattening then 35% slopes to base Maximum elevation of 8,516 and an elevation difference of 4,340 feet
- Blue are barite Red are different deposit types Carlin Trend 84 million ounces total Independence / Jerritt Canyon trend 8 million ounces
- Early and middle Paleozoic rocks deposited in the north trending Cordilleran geosyncline Deposition postulated to have occurred in a marginal basin bounded on the west by an island arc system Located in the gradational facies boundary between the eastern dolomites (deeper waters) and the transitional suite (limestone-clastics) of early to late Devonian (Trojan, 1978)
- 1. End-Devonian Cordilleran geosyncline covered most of Nevada – volcanics in the in west, carbonates in east and transitional in central 2. Early-Late Devonian orogenic events cause uplift, folding, and erosion in western Nevada – clastics deposited in central Nevada Lone Mountain located in the gradational facies boundary between the eastern dolomites (deeper waters) and the transitional suite (limestone-clastics) of early to late Devonian
- Late Devonian and Early Mississippian continued folding and uplift 3. Antler Orogeny of late Devonian closed the basin and displaced the deep water dolomites eastward onto the shallow water transition limestone-clastics eastward into the basin Early Late Devonian orogenic events cause uplift, folding, and erosion in western Nevada – clastics deposited in central Nevada 4. This was occurring during and after emplacement of the Roberts Mountains allochthon
- ASBOG sample question #18 A tectonic window (or Fenster (lit. "window" in German)) is a geologic structure formed by erosion or normal faulting on a thrust system. In such a system the rock mass (hanging wall block) that has been transported by movement along the thrust is called a nappe. A kettle is a depression in glacial outwash dift made when a detached ice block melts creating a depression – eastern North Dakota Nappe, in geology, large body or sheet of rock that has been moved a distance of about 2 km (1.2 miles) or more from its original position by faulting or folding. Doline is basically a sinkhole
- General geological map in Google Earth See the intrusive rock forming the core The way in which the limestones, shales, silts are peeking our along the edges Quaternary fans to the east Mixed materials to the west Topographic profile illustrating the slope profiles for the different lithologies
- Better Geological map – centered on location Lone Mountain window is a broad west-plunging, antiform with an east-west trending axis – antiform meaning a convex shape Consistent with the large wave-length folds in Independence-Jerritt District Tertiary quartz monzonite stock Intruded into Ordovician / Devonian shelf carbonates Referred to as the Lower Plate Distal, off-shelf siliciclastic rocks Referred to as the Upper Plate Half Window formed by stock and lower plate there is the Fenster
- Hornfels (green) ,a fine-grained metamorphic rock, was subjected to the heat of contact metamorphism at a shallow depth It was "baked" by heat conducted from a nearby magma Common temperatures for the formation of hornfels range from about 1300 to 1450 degrees Fahrenheit (700 to 800 degrees Celsius)
- Skarn in Purple Rocks that are rich in Ca, Mg, Fe, Al, Mn, Au, Ag, etc. Form through replacement of the original carbonate rocks Hydrothermal interaction of hot silicate magma and cool sedimentary rocks Potential gold mineralization in proximal skarn bodies Also potential in more distal sediment hosted in the lower plate rocks
- Jasperoid is a silica-sulfide metasomatism of dolomite Dense, purple-black rocks with a considerable amount of pyrite The host dolomite is intruded hydrothermally by different fluids Minerals are replaced in the dolomites and often contain metals etc.
- Biostratigraphy utilizing brachiopods, conodonts, and corals tie the relative time period and formations
- 17 mines and prospects in the district Trenches, surficial, adits (shallow), prospect pits Locations encircle the peak at an elevation of 8,780’ Initial mineral discovery in 1866 Rip Van Winkle mine responsible for largest production 1939 Many companies conducted exploration as mentioned previously
- Ore discovered in 1860’s and mining continued until RVWCMC acquired the property Flotation Mill Built 65 tons/day Hydrothermal veins, mineralized faults, replacement deposits Produced silver, lead, zinc Down to 700 foot level
- Image looking into the z-axis See shafts from different levels Max depth 700 foot level Briefly cover production from the mine
- Drilled 5 diamond drill holes Total of 1,084 feet 600-700 foot levels Excavated a 250 foot surface trench Took 26 underground samples
- Exploration Work – scattered data / scattered targets / short time 1960s : Kirkwood (NAMMCO) and Huber assemble acreage 1965 : Newmont CARLIN 1977 – 1980 : Freeport CARLIN 1894 – 1985 : Exxon SEDEX 1987 – 1988 : Inspiration SKARN 1989 – 1990 : Newmont CARLIN 1995 : Cordex SKARN 1997 : Tri Origin (Homestake) CARLIN 1999 : Kennecott CARLIN 2006 – 2008 : Teck Cominco CARLIN/SKARN
- Rip Van Winkle Mine –Primary Zone Historic base and precious metal producer (1940’s) with covered +5,000 foot long structural zone with Carlin Trend
- Laurasian continental mass