Mr. Bruce Durham reports
DRILL HOLE ASSAY INTERVALS INCLUDING 18.35% ZINC OVER 108 FEET AND 7.81% ZINC OVER 70 FEET FOUND IN HISTORIC DATA
Nevada Zinc Corp. has secured significant exploration data from exploration and mining work carried out at its recently acquired Mountain View mine (MVM) and the surrounding area, in some cases dating back more than 70 years. The recently acquired data which came from two separate sources significantly enhance the data available to date on the MVM property and expand the limit of the known mineralization on the company's Lone Mountain project. The files include partial diamond drill core assay results for 37 of 41 diamond drill holes completed on or near the recently acquired MVM property.
President and chief executive officer Bruce Durham commented on the acquisition of the historic data: "It always increases our understanding of a project when we can indirectly have the assistance of the previous operators. There are details in historic maps and reports that are of great assistance in the planning of our future exploration programs. In this case we have old drill results, maps of underground workings, geological maps of some underground workings as well as old smelter settlement records for ore shipments, all of which will be very helpful in moving our Lone Mountain project forward."
Highlights
Records indicate that there were 41 generally very shallow surface drill holes completed during 1944 and 1945 to test for near-surface zinc mineralization in the vicinity of the MVM mine workings and extending to the west to the general vicinity of the updip projection of the company's Discovery zone of mineralization.
Thirty-three holes are reported to have been drilled at a variety of angles, dips and to various lengths. Virtually all of these holes intersected significant intervals of zinc mineralization.
Twenty-eight holes were drilled on or in close proximity to the MVM property and stretch across the projected strike length of the main zone from the west boundary to the east boundary of the MVM property, a distance of 180 metres.
None of these diamond drill holes are reported to have tested the main zones of zinc mineralization more than 250 feet below surface and most of the holes intersected the mineralization at depths of less than 100 feet.
Summary of historic information
The company is working to ascertain the actual location of the holes so they can be included in an updated database of hole locations and drill hole intercepts. The holes can then be updated onto a longitudinal section in the plane of the main Discovery zone of mineralization.
The most easterly hole drilled on the main zone reported shallow mineralization near the east boundary of the MVM property with intersections of 46 feet averaging 4.63 per cent zinc and 17 feet averaging 8.8 per cent zinc in the interval between 79 feet and 195 feet. It is not known if additional intervals were analyzed. No drilling is reported to the east of the MVM property.
The diamond drill hole assay intervals are all shallow and all of the drill holes on the MVM property are drilled at elevations of 100 feet above the collars of the company's drilling on its Discovery zone of zinc and lead mineralization. No diamond drill holes tested the main zone of zinc mineralization at depths at which the company has intersected broad zones of high-grade zinc mineralization. One of the deepest intersections in the historic program near the west boundary of the MVM property, DDH-36, intersected two zones of mineralization: 31 feet grading 7.42 per cent zinc and 26 feet grading 4.46 per cent zinc. The bottom of the deeper section is at 226 feet below the collar of the hole.
The company will provide further commentary and results on the data review as the evaluation of the data progresses. What can be said is that the work appears to have been carried out in a detailed and methodical manner.
The data obtained are all more than 60 years old and are therefore historic and incomplete, and the assay methods are not known. No quality assurance/quality control program is known to have been completed, and therefore the information contained in this release must be considered to be historic in nature under National Instrument 43-101 and therefore should not be relied upon. The company does, however, consider the data to be of significance and of value for future work programs on the property.
Initial indications are that core recovery in the mineralized zones was very poor in some cases (not uncommon given drilling techniques 70 years ago).
HISTORIC DRILL HOLE RESULTS
DDH Depth From To Width Zn
(ft) (ft) (ft) (ft) (%)
1 237 No data
2 309 150.0 151.0 1.0 8.30
3 193 142.0 142.5 0.5 34.60
4 161 109.0 113.0 4.0 4.20
5 161 No data
6 155 56.0 59.0 3.0 2.40
112.5 116.0 3.5 5.50
7 247 64.5 74.5 10.0 3.70
90.0 105.0 15.0 5.80
117.0 137.0 20.0 15.30
8 67 16.5 17.5 1.0 22.80
8a 200 16.5 18.0 1.5 33.10
137.5 142.0 4.5 3.50
9 298 11.0 36.5 25.5 14.15
90.5 109.0 18.5 11.06
238.5 248.0 9.5 2.93
260.0 270.0 10.0 1.90
10 190 28.0 30.0 2.0 7.20
11 165 ? ? 5.0 4.00
12 55 30.0 45.0 15.0 13.66
13 220 17.5 46.0 28.5 6.50
14 212 28.0 30.0 2.0 18.50
15 165 125.0 131.0 6.0 25.80
16 155 79.0 90.0 11.0 4.28
17 97.5 26.0 28.0 2.0 6.40
18 100 46.5 51.0 4.5 2.60
90.0 94.0 4.0 5.00
19 223 No mineralization
20 297 79.0 125.0 46.0 4.63
178.0 195.0 17.0 8.80
21 110 29.0 47.0 18.0 9.52
70.0 85.0 15.0 13.70
22 107 35.0 54.0 19.0 22.53
75.0 87.0 12.0 4.76
23 210 24.0 40.0 16.0 8.36
54.0 76.0 22.0 21.90
24 110 65.0 92.0 27.0 7.27
25 200 96.0 141.0 45.0 11.83
157.0 200.0 43.0 6.89
26 332 175.0 183.0 8.0 5.93
27 166 28.0 136.0 108.0 18.35
28 260 79.0 81.0 2.0 21.70
105.0 170.0 65.0 8.84
29 145 No mineralization
30 395 130.0 160.0 30.0 7.02
31 300 88.5 92.5 4.0 19.00
203.0 205.0 2.0 15.40
32 294 No data
33 729 No mineralization
34 503 204.0 241.0 37.0 4.15
35 750 159.0 229.0 70.0 7.81
36 321 129.0 160.0 31.0 7.42
200.0 226.0 26.0 4.46
37 695 No data
38 359 111.0 117.0 6.0 3.00
207.0 215.0 8.0 9.50
39 650 No data
40 431 136.5 140.0 3.5 9.10
153.0 161.0 8.0 5.40
41 256.0 263.5 7.5 18.40The drill core assay results above are from 1944 and 1945 as summarized in a table in 1951 to 1952 and as such predate NI 43-101 standards for disclosure for mineral projects. The data are therefore to be considered historic, incomplete and the assay methods are not known.
No QA/QC is known to have been completed and therefore the information contained in this release must be considered to be historic in nature under NI 43-101 and therefore should not be relied upon. The drill collar locations and azimuths are being verified to help determine the quality of the historical work. True widths have not and cannot be calculated for the intervals in the table above. All data are in feet, to convert to metres multiply by 0.3048.
The Mountain View mine property
Little information was readily available on the operations at the historic Mountain View mine at the time the company purchased the MVM property. In a Nevada state report by R.J. Roberts, K.M. Montgomery R.E. Lehner (1967), and titled "Geology and Mineral Resources of Eureka County, Nevada," Nevada Bureau of Mines and Geology, Bulletin 64, the following is indicated:
Production years were from 1942 to 1964, and production totalled 4,952,627 pounds of zinc, 649,579 pounds of lead, 4,040 ounces of silver and 600 pounds of copper (no data provided or available for 1950).
Mr. Roberts et al. (1967) reported the first claims were located in the area in 1920 for zinc. Production was small until 1942 when high-grade zinc carbonate was discovered on the Mountain View claim. An underground mine was established with levels on the 44-foot and 82-foot levels. Production in 1942 to 1943 totalled 2,284 short tons grading 28.8 per cent zinc and 4 per cent lead. Production to 1964 amounted to 4,952,627 pounds of zinc, 649,579 pounds of lead, 4,040 ounces of silver and 600 pounds of copper. The mineralogy of the ore was reported to be smithsonite, zincite, hydrozincite and cerussite, malachite, and azurite. It was reported that small amounts of sulphide were present locally, principally, sphalerite, galena, chalcopyrite and pyrite. A small drill program was reported to have been completed in areas proximal to the MVM properety which indicated the presence of additional mineralization. Mineralization is located within brecciated Devils Gate limestone and is thought to be structurally controlled, perhaps at the intersection of two fault systems (Mr. Roberts et al.).
It is not known if any mining or exploration has been completed on the MVM property since 1964.
About the Lone Mountain project
The Lone Mountain project, which is 100 per cent owned by the company, comprises 218 claims covering approximately 4,000 acres and is subject to certain terms as per the underlying lease agreements disclosed on SEDAR (see press release dated June 24, 2014, and various other filings, including the company's management's discussion and analyses filed on SEDAR).
The property is located in east-central Nevada and is easily accessible via paved and gravel roads northwesterly from Eureka, where all essential services are available. The property now includes the Mountain View mine.
Bruce Durham, PGeo, is a qualified person as that term is defined by National Instrument 43-101 on behalf of the company, and has approved the scientific and technical content contained in this press release.
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