Lik

Prospect, Active

Alternative names

Sue

Commodities and mineralogy

Main commodities Ag; Pb; Zn
Other commodities Ba; Cd
Ore minerals boulangerite; bournonite; galena; marcasite; pyrite; sphalerite
Gangue minerals barite; calcite; dolomite; quartz

Geographic location

Quadrangle map, 1:250,000-scale DL
Quadrangle map, 1:63,360-scale A-2
Latitude 68.1664
Longitude -163.202
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Lik prospect is at an elevation of about 1,000 feet in the headwaters of east-flowing tributaries to Wulik River. The coordinates are at about the center of the prospect, near the southeast corner of section 15, T. 32 N., R. 20 W., of the Kateel River Meridian. The Sue deposit is the southern extension of the Lik deposit beyond the claims of the Zazu Metals Corporation, which was exploring the Lik deposit in early 2010. The accuracy is unknown.

Geologic setting

Geologic description

In early 2010, the Lik deposit was on 296 unpatented federal mining claims, and the deposit was aggressively being explored by Zazu Metals Corporation (Zazu Metals Corporation, 2010; Gow and others, 2009; Britton, 2009; Scott and others, 2010). The Lik deposit was first staked in 1976 as a result of stream geochemical sampling by GCO and New Jersey Zinc Company. The deposit was drilled in 1977 by a joint venture of GCO, New Jersey Zinc, and WGM. HOMEX soon replaced New Jersey Zinc and by 1979, 103 holes had been drilled, many intersected lead-zinc mineralization. Noranda optioned the property in 1984, and in 1990 Moneta Porcupine Mines Inc. took control. By the end of 1992, 135 holes had been drilled that aggregated 26,237 meters. Zazu purchased their interest in the property in 2006 and drilled 69 holes in 2007 and 2008 that aggregated 8,223 meters (Gow and others, 2009; Scott and others, 2010).
The Lik deposit is in Kuna Formation of the Red Dog plate of the Endicott Mountain allochthon (Gow and others, 2009; Scott and others, 2010). Regionally, the Mississippian to Pennsylvanian Kuna Formation consists of at least 122 meters of thinly interbedded calcareous shale, calcareous spiculite, and bioclastic support stone, overlain by 30 to 240 meters of siliceous shale, mudstone, calcareous radiolarite, and calcareous turbidite. The Kuna Formation has two units, the Kivilina and the Ikalukrok which hosts the massive sulfide deposits in the area, including the Lik. At the Lik deposit, the Ikalukrok unit consists of carbonaceous and siliceous black shale with subordinate black chert and fine-grained limestone. These strata and their mineralized horizons generally strike north and dip 25 to 40 degrees west. The Lik mineralized horizon is overlain conformably by the Permian Siksikpuk Formation. The Lik mineralization is cut by numerous faults, notably the Main Break Fault that drops the northern end of the deposit down about 150 meters and separates the Lik South deposit from the Lik North deposit. The Lik South deposit is about 1,100 meters long and about 600 meters wide; the Lik North deposit is about 700 meters long and about 350 wide. The Lik deposit is open to the north and extends south beyond the Zazu claims to the Sue prospect, which is held by the Teck company that operates the nearby Red Dog mine (DL001).
The mineralization consists of irregular stratiform lenses of pyrite, marcasite, sphalerite, and galena with rare tetrahedrite, bournonite, and boulangerite. The mineralization was deposited in four distinct cycles that are better developed close to the hydrothermal sources of the mineralizing fluids. The thickest cycle is about 13.7 meters thick. Typically, the base of a cycle begins with the deposition of sphalerite, galena, and pyrite; the highest grades usually occur a few meters above the base of a cycle and the grade decreases upward. Locally, the mineralization is brecciated. The gangue consists of chert, clay minerals, carbonates, and barite.
Numerous high-grade intercepts of zinc-lead-silver mineralization were cut in many of the drill holes. As estimated by Gow and others (2009), Roscoe, and by Scott and others (2010), the mineral resources in Lik South consist of 18.74 million tonnes of 'Indicated Mineral Resources' with a grade of 8.08 percent zinc, 2.62 percent lead, and 52.8 grams of silver per tonne. There is an 'Inferred Mineral Resources' in Lik North of 1.23 million tonnes with a grade of 6.08 percent zinc, 2.12 percent lead, and 35 grams of silver per tonne; and' 'Inferred Mineral Resources' of 5.18 million tonnes with a grade of 9.65 percent zinc, 3.25 percent lead, and 51 grams of silver per tonne. An earlier 'reserve' estimate by Sterne and others (1984) was similar but did not meet modern standards of ore calculations, nor did it have the benefit of the more recent drilling.
Zazu completed a summer field program in 2011 including exploration, infill, and geotechnical drilling; metallurgy and associated environmental baseline, acid rock drainage, and infrastructure studies (Zazu Metals Corporation, 2011). The 2012 program focused on environmental baseline, acid rock drainage, and infrastructure studies, in addition to refined resource estimate, pit models, and metallurgical studies (Zazu Metals Corporation, 2012). In 2013, Zazu initiated the field portion of the acid rock drainage program, in addition to mine design, infrastructure, and metallurgical studies. The work completed by Zazu over these three years was compiled for a preliminary economic analysis (PEA), which was reported on April 23, 2014. Drilling completed in 2011 contributed to a new indicated mineral resource for Lik South of 16.85 million tonnes at 8.04 percent zinc, 2.70 percent lead, and 50.1 grams of silver per tonne. The PEA found that acid rock drainage and metal leaching related to waste rock and storage facilities are manageable and have no large environmental or permitting issues (Matter and others, 2014).
Geologic map unit (-163.204967669287, 68.1657419407424)
Mineral deposit model Sedimentary exhalative Zn-Pb (Cox and Singer, 1986; model 31a).
Mineral deposit model number 31a
Age of mineralization The mineralization is coeval with the deposition of the Mississippian host rocks (Gow and others, 2009; Scott and others, 2010).
Alteration of deposit Host rocks are intensely silicified close to the sulfides (Gow and others, 2009).

Production and reserves

Workings or exploration
In early 2010, the Lik deposit was on 296 unpatented federal mining claims, and the deposit was being explored by Zazu Metals Corporation (Gow and others, 2009; Britton, 2009; Scott and others, 2010; Zazu Metals Corporation, 2010). The LIk deposit was first staked in 1976 as a result of stream geochemical sampling by GCO and New Jersey Zinc Company. The deposit was drilled in 1977 by a joint venture of GCO, New Jersey Zinc, and WGM. HOMEX soon replaced New Jersey Zinc and by 1979, 103 holes had been drilled on the deposit; many intersected lead-zinc mineralization. Noranda optioned the property in 1984, and in 1990 Moneta Porcupine Mines Inc. took control. By the end of 1992, 135 holes had been drilled that aggregated 26,236.6 meters. Zazu purchased their interest in the property in 2006 and drilled 69 holes in 2007 and 2008 that aggregated 8,223 meters (Gow and others, 2009; Scott and others, 2010).
Zazu completed a summer field program in 2011 including exploration, infill, and geotechnical drilling; metallurgy and associated environmental baseline, acid rock drainage, and infrastructure studies (Zazu Metals Corporation, 2011). The 2012 program focused on environmental baseline, acid rock drainage, and infrastructure studies, in addition to refined resource estimate, pit models, and metallurgical studies (Zazu Metals Corporation, 2012). In 2013, Zazu initiated the field portion of the acid rock drainage program, in addition to mine design, infrastructure, and metallurgical studies. The work completed by Zazu over these three years was compiled for a preliminary economic analysis (PEA), which was reported on April 23, 2014. Drilling completed in 2011 contributed to a new indicated mineral resource for Lik South of 16.85 million tonnes at 8.04 percent zinc, 2.70 percent lead, and 50.1 grams of silver per tonne. The PEA found that acid rock drainage and metal leaching related to waste rock and storage facilities are manageable and have no large environmental or permitting issues (Matter and others, 2014).
Indication of production None
Reserve estimates
As estimated by Gow and others (2009), Roscoe, and by Scott and others (2010), the mineral resources in Lik South consist of 18.74 million tonnes of 'Indicated Mineral Resources' with a grade of 8.08 percent zinc, 2.62 percent lead, and 52.8 grams of silver per tonne. There is an 'Inferred Mineral Resources' in Lik North of 1.23 million tonnes with a grade of 6.08 percent zinc, 2.12 percent lead, and 35 grams of silver per tonne; and' 'Inferred Mineral Resources' of 5.18 million tonnes with a grade of 9.65 percent zinc, 3.25 percent lead, and 51 grams of silver per tonne. An earlier 'reserve' estimate by Sterne and others (1984) was similar but did not meet modern standards of ore calculations, nor did it have the benefit of the more recent drilling.
Drilling completed in 2011 by Zazu Metals Corporation contributed to a new indicated mineral resource published in a prelimary economic assessment report in 2014 for Lik South of 16.85 million tonnes at 8.04 percent zinc, 2.70 percent lead, and 50.1 grams of silver per tonne of potential open pit ore. The inferred mineral resource for open pit ore at Lik South is 0.74 million tonnes at 7.73 percent zinc, 1.94 percent lead, and 13.4 grams of silver per tonne. Indicated resources at Lik North are 0.44 million tonnes at 10.03 percent zinc, 2.77 percent lead, and 59.0 grams of silver per tonne and inferred resources are 2.87 million tonnes at 8.59 percent zinc, 2.68 percent lead, and 37.5 grams of silver per tonne (Matter and others, 2014).

References

MRDS Number A015691

References

Gow, N.N., Roscoe, W.E., and Scott, K.C., 2009, Technical report and mineral resource estimate on the Lik deposit, northern Alaska, U.S.A.: NI43-101 Technical Report for Zazu Metals Corporation, 91 p. (posted on www.sedar.com, May 13, 2009), http://sedar.com/GetFile.do?lang=EN&docClass=24&issuerNo=00026045&fileName=/csfsprod/data106/filings/01563280/00000001/v%3A%5CACADEMY%5CZazu-43-101Report.pdf (as of December 1, 2014).
Matter, R.L., Loschiavo, T., Rawsthorne, G., Gow, N.N., Travis, M., 2014, Preliminary Economic Assessment Technical Report Zazu Metals Corpoation, Lik Deposit, Alaska, USA, (posted on www.sedar.com, April 24, 2014) http://sedar.com/GetFile.do?lang=EN&docClass=24&issuerNo=00026045&fileName=/csfsprod/data149/filings/02197001/00000001/v%3A%5CZazuMetals%5CJDS_Zazu_LikPEA_Apr23-2014.pdf (as of December 2, 2014).
Reporters Anita Williams (Anchorage, AK); D.J. Grybeck (Contractor, USGS); V.C. Zinno (Alaska Earth Sciences, Inc.)
Last report date 12/10/2014