Rainy River
"BURNS" CLAIM BLOCK GOLD-SILVER FLAGSHIP PROJECT
Burns Block Highlights
- Bayfield's flagship Burns Block is surrounded by Rainy River Resources (TSX: RR) and adjoins immediate east of Rainy River's main ODM17 gold deposit and to the west of their expanding Intrepid gold-silver zone.
- Rainy River's October 2012 NI 43-101 resource calculation shows a measured and indicated resource of 6.17 million of gold averaging 1.21 g/t gold, in addition to an inferred resource of 2.28 million ounces of gold averaging 0.75 g/t gold. The deposit also contains a measured and indicated resource of 13.34 million ounces of silver averaging 2.62 g/t silver, in addition to an inferred resource of 6.98 million ounces of silver averaging 2.32 g/t silver.
- 100,000 metre diamond drill program underway.
- Objective of major drill program: to explore and expand extension of gold and silver mineralization that is being defined by RR on their ground adjacent to Bayfield's properties.
- Drill results thus far are very promising: high grade gold intersections as well as definition of near-surface, bulk tonnage gold mineralization.
- Hole RR11-71 intersected 26.70 g/t gold and 170.69 g/t silver over 25.50 metres (starting at 38 metres down hole depth) including 11.20 metres of 60.05 g/t gold and 362.96 g/t silver.
- Hole RR10-18 intersected 35.93 g/t gold and 360 g/t silver over 10.0 metres.
- A wide shear zone at the East Burns - Intrepid Zone is being explored and this zone is located 600-700 metres to the east of Bayfield's western high grade gold-silver zone.
- East Burns - Intrepid Zone drill hole RR12-30 returned 5.45 g/t gold and 20.63 g/t silver over 19.6 metres.
- East Burns - Intrepid Zone Drill Hole RR12-34 returned 26.50 metres grading 8.82 g/t gold and 39.44 g/t silver including 11.60 metres of 17.04 g/t gold and 79.07 g/t silver.
- East Burns - Intrepid Zone Drill Hole RR13-7 returns 22.90 metres grading 8.10 g/t gold and 20.55 g/t silver including 11.00 metres of 12.19 g/t gold and 30.05 g/t silver.
- The assay results from the drilling at this new zone clearly show that strong gold mineralization is present over an expanding area, both down dip and along strike at the East Burns - Intrepid Zone.
Project Overview
Regional Setting of the Rainy River Greenstone Belt and Gold Deposits
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Bayfield owns 100% of the mineral rights on its flagship "Burns" block property which is located in the Richardson Township, Rainy River District of northwestern Ontario. The property is surrounded by Rainy River Resources (TSX: RR) property and adjoins the immediate east of Rainy River Resources' main ODM17 gold-silver deposit and to the west of their expanding Intrepid gold-silver zone. The property is subject to a 2% NSR.
Access to the "Burns" property is attained via numerous all-weather, secondary provincial highways (gravel) and township roads, which lead off of paved provincial highways 11 and 71. These routes traverse the region and provide excellent ingress to the property.
Rainy River Gold Exploration Claims Map
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The property is located near the international boundary with Minnesota. The nearest population centre is Fort Frances, 50 km to the southwest. Bayfield's properties lie within the Rainy River Greenstone Belt. This belt is one component of the western part of the Archean Wabigoon Subprovince of the Canadian Shield, a 900 km long east-west trending metavolcanic-metasedimentary domain bordered and intruded by granitoid intrusions of up to batholithic dimensions. The Wabigoon Subprovince is composed of several tectonically bounded assemblages consisting of komatiitic to calc-alkalic metavolcanics overlain by clastic and minor chemical sediments. Intrusion of the granitoid domes has imparted a synformal structural character to the supracrustal rocks, and the central axial zones of many of these synformal belts may be characterized by long sinuous shear / fault zones.
2013 Rainy River District Geological Map of the Burns Block and "B" Block
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Drilling on the property has confirmed the widespread distribution of gold and silver within two litho-structural intervals directly on strike with the ODM17 Zone of Rainy River Resources. Both shallow and deeper (below potential open pit parameters) intercepts reported by Bayfield Ventures along the strike extension of the ODM17 Zone of Rainy River Resources indicate that well above gold and silver cut-off grade material continues onto the Burns Block.
The zones of mineralization occur in felsic metavolcanics within zones of stronger penetrative foliation. The foliation is near coincident with the strike and dip of the lithologies. Gold grade appears to be strongly influenced by proximity to the margins of strong sericitic alteration within the shear system. The zones strike at 120 degrees and dip at around 50 degrees to the southeast on the Burns Block property.
Rainy River's October 2012 resource calculation shows a measured and indicated resource of 6.17 million of gold averaging 1.21 g/t gold, in addition to an inferred resource of 2.28 million ounces of gold averaging 0.75 g/t gold. Rainy River considers that the material above the final depth of the conceptual pit shell (500 metres vertical depth) offers reasonable prospects for economic extraction from an open pit using a cut-off grade of 0.35 g/t gold. The deposit also contains a measured and indicated resource of 13.34 million ounces of silver averaging 2.62 g/t silver, in addition to an inferred resource of 6.98 million ounces of silver averaging 2.32 g/t silver.
Rainy River District Gold Zones
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In 2011 Bayfield continued to be aggressive with its exploration and drilling on the Burns Block. The Company had two rigs drilling on the property.The objective of the major drill program was to explore and expand the extension of gold and silver mineralization that was defined by Rainy River Resources on their ground adjacent to Bayfield's properties.
Burns Block Drill Hole Location Exploration Map (May 2013)
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Thus far Bayfield has had great success with the 100,000 metre drill program. The Company is delineating lower grade, bulk tonnage gold mineralization as well as higher grade zones with drill results right on par with Rainy River Resources.
West Burns Block Exploration
In early 2010, hole RR10-15 tapped into a high grade gold and silver shoot and returned 31.71 g/t Au over 3.0 metres at 160 metres below surface. The Company quickly followed up this result with another significant drill intercept. Hole RR10-18 intersected 35.93 g/t Au over 10.0 metres . Bonanza grade silver was also intersected in hole RR10-18 totaling 360 g/t Ag over 10 metres including 1760 g/t Ag over 1 metre (gold equivalent intersection of 46 g/t AuEq over 10 metres). Furthermore, the linear plunge distance between the high grade zone in hole RR10-15 and that in hole RR10-18 is in excess of 400 metres indicating a potential for a high grade gold shoot of considerable length on the Burns Block.
As delineation drilling of the high grade gold-silver shoot continued on the western portion of the Burns Block, more high grade intercepts have been drilled. Hole RR10-52, drilled between RR10-18 and RR10-15, intersected 89.96 g/t Au and 1414.55 g/t Ag over 1.1 metres. Hole 11-1 intersected 33.13 g/t Au and 208.18 g/t Ag over 2.2 metres representing the down-plunge extension of the high grade mineralization in RR10-18. Hole RR11-5 intersected 13 g/t Au and 70.22 g/t Ag over 6.6 metres. The gold-silver zone in RR11-5 represents the up-plunge extension of the high grade mineralization intercepted in RR10-15 as the Company delineates the high grade shoot up towards the surface on the northern part of the property.
In May of 2011, a new east-west exploratory drill fence, known as the Far North Fence, had been established in a position 60 metres north of the existing North Fence. The purpose of the fence was to test the near surface portion of the mineralized zone that has only partially been delineated on the Burns Block to date. A major gold-silver zone was intercepted in Far North Fence hole RR11-71: 26.70 g/t Au and 170.69 g/t Ag over 25.50 metres including a bonanza grade zone of 11.20 metres of 60.05 g/t Au and 362.96 g/t Ag. The bonanza grade intercept in RR11-71 falls within the up-plunge projection of the modeled mineralized gold-silver shoot on the western portion of the property thereby expanding the known high grade zone to the northeast. The total linear plunge distance between the bonanza grade zones in RR10-18 and RR11-71 is approximately 600 metres. The results strongly support the presence of a discrete structural zone which hosts significant high grade gold-silver mineralization in a SSW-NNE orientation.
Bayfield's Rainy River Drill Hole RR11-71 (Far North Fence)
(Click images to Enlarge)
Bayfield has drilled a series of holes on due west azimuths in the northwest corner of the Burns Block. The purpose of these drill holes was two fold: to further delineate known high grade gold and silver zones and to explore for additional electrum bearing fracture zones between the existing pattern of north facing dill holes. The Company established numerous set-ups for these east-west drill holes in order to test the lateral thicknesses and vertical extensions of the bonanza grade gold zones previously intercepted in holes RR11-71, RR10-15, RR10-52 and RR10-18.
The results from these east-west infill drill holes have been highly encouraging. Drill hole RR11-180 intercepted 30.00 metres grading 12.98 g/t Au and 39.65 g/t Ag at a vertical depth of 40 metres. The length of this intercept demonstrates that the high grade zone intercepted in hole RR11-71 (11.2 metres of 60.05 g/t Au and 362.96 g/t Ag) has significant lateral width to it from east-west. Hole RR11-181 intercepted 7.20 metres of 61.02 g/t Au and hole RR11-182 intercepted 12.00 metres of 9.53 g/t Au and 31.35 g/t Ag.
The geometry of the three holes RR11-180, RR11-181 and RR11-182 produces approximately 12 metres of vertical continuity of the high grade zone along with highly variable but significant east-west continuity ranging from 7.2 to 30 metres. This high grade gold and silver zone is near surface and well above 100 metres vertical depth.
Surrounding the high grade zones on the western portion of the Burns Block is a pervasive, lower grade mineralized envelope. This envelope is significant to the overall value of the gold and silver mineralization hosted at the Burns Block. The mineralization commences immediately under 15 to 25 metres of glacial till cover in the northwest corner of the property.
Notable High Grade Drill Intercepts on the Western Burns Block Gold-Silver Zone:
| DRILL HOLE |
FROM (m) |
TO (m) |
INTERVAL (m) |
Au (g/t) |
Ag (g/t) |
| RR10-15 |
190.00 |
199.00 |
9.00 |
12.88 |
39.26 |
| |
194.00 |
197.00 |
3.00 |
31.71 |
50.23 |
| |
195.00 |
196.00 |
1.00 |
48.10 |
52.30 |
| RR10-18 |
173.00 |
178.00 |
5.00 |
0.83 |
0.82 |
| |
489.00 |
491.00 |
2.00 |
2.45 |
25.30 |
| |
497.00 |
507.00 |
10.00 |
35.93 |
359.65 |
| including |
498.00 |
499.00 |
1.00 |
63.90 |
1760.00 |
| and |
499.00 |
500.00 |
1.00 |
109.00 |
96.10 |
| and |
503.00 |
504.00 |
1.00 |
90.30 |
881.00 |
| |
542.00 |
563.00 |
21.00 |
1.24 |
42.77 |
| including |
545.00 |
546.00 |
1.00 |
15.60 |
719.00 |
| RR10-52 |
402.40 |
403.50 |
1.10 |
89.96 |
1414.55 |
| RR11-1 |
509.50 |
510.20 |
0.70 |
21.60 |
21.00 |
| |
550.75 |
561.70 |
10.95 |
1.71 |
78.36 |
| including |
559.90 |
561.70 |
1.80 |
5.70 |
282.11 |
| |
617.85 |
627.00 |
9.15 |
8.37 |
40.57 |
| including |
623.90 |
626.10 |
2.20 |
33.13 |
208.18 |
| RR11-5 |
161.80 |
201.75 |
39.95 |
2.51 |
20.47 |
| including |
161.80 |
183.00 |
21.20 |
4.37 |
28.20 |
| and |
174.40 |
181.00 |
6.60 |
13.00 |
70.22 |
| and |
174.40 |
177.90 |
3.50 |
15.26 |
66.91 |
| RR11-14 |
275.50 |
332.40 |
56.90 |
0.62 |
13.77 |
| including |
275.50 |
290.70 |
15.20 |
1.50 |
42.46 |
| including |
275.50 |
278.50 |
3.00 |
6.75 |
211.07 |
| including |
325.25 |
328.30 |
3.05 |
2.14 |
7.67 |
| RR11-70 |
33.50 |
59.00 |
25.50 |
1.42 |
44.24 |
| including |
41.00 |
50.00 |
9.00 |
3.25 |
96.34 |
| including |
45.00 |
46.00 |
1.00 |
17.90 |
511.00 |
| |
74.00 |
84.80 |
10.80 |
0.87 |
13.02 |
| including |
81.40 |
82.8 |
1.40 |
4.20 |
61.10 |
| RR11-71 |
38.00 |
63.50 |
25.50 |
26.70 |
170.69 |
| including |
46.00 |
61.00 |
15.00 |
45.24 |
281.03 |
| and |
47.80 |
59.00 |
11.20 |
60.05 |
362.96 |
| RR11-162 |
52.00 |
62.00 |
10.00 |
11.22 |
26.91 |
| including |
55.60 |
61.10 |
5.50 |
20.23 |
39.19 |
| RR11-180 |
26.00 |
32.00 |
6.00 |
0.15 |
14.88 |
| |
40.00 |
41.00 |
1.00 |
0.16 |
11.00 |
| |
47.00 |
77.00 |
30.00 |
12.98 |
104.77 |
| including |
47.00 |
66.50 |
19.50 |
19.85 |
156.66 |
| including |
47.00 |
61.00 |
14.00 |
27.30 |
198.99 |
| including |
47.00 |
57.00 |
10.00 |
36.56 |
260.07 |
| including |
52.00 |
57.00 |
5.00 |
64.66 |
277.82 |
| RR11-181 |
44.00 |
77.00 |
33.00 |
13.73 |
159.32 |
| including |
48.40 |
58.00 |
9.60 |
46.30 |
510.47 |
| including |
49.80 |
57.00 |
7.20 |
61.02 |
656.88 |
| and |
49.80 |
50.90 |
1.10 |
28.60 |
459.00 |
| and |
50.90 |
52.00 |
1.10 |
33.40 |
634.00 |
| and |
52.00 |
53.00 |
1.00 |
21.80 |
164.00 |
| and |
53.00 |
54.30 |
1.30 |
27.40 |
184.00 |
| and |
54.30 |
55.00 |
0.70 |
281.00 |
2580.00 |
| and |
55.00 |
56.00 |
1.00 |
86.60 |
1000.00 |
| and |
56.00 |
57.00 |
1.00 |
30.40 |
318.00 |
| |
86.00 |
99.50 |
13.50 |
1.05 |
18.97 |
| RR11-182 |
22.90 |
33.50 |
10.60 |
0.15 |
12.64 |
| |
44.00 |
48.50 |
4.50 |
0.20 |
7.93 |
| |
53.00 |
81.50 |
28.50 |
4.14 |
17.91 |
| including |
54.50 |
66.50 |
12.00 |
9.53 |
31.35 |
| including |
59.00 |
65.00 |
6.00 |
16.62 |
40.98 |
| |
87.50 |
90.50 |
3.00 |
0.97 |
40.40 |
| including |
87.50 |
89.00 |
1.50 |
1.65 |
58.60 |
| |
96.50 |
101.00 |
4.50 |
0.41 |
21.13 |
| including |
98.00 |
99.50 |
1.50 |
0.68 |
36.20 |
| RR12-23 |
22.00 |
24.00 |
2.00 |
1.26 |
21.10 |
| including |
23.00 |
24.00 |
1.00 |
1.85 |
28.70 |
| |
34.00 |
38.00 |
4.00 |
0.41 |
17.80 |
| |
43.00 |
59.00 |
16.00 |
26.15 |
348.74 |
| including |
46.00 |
56.00 |
10.00 |
38.07 |
517.23 |
| including |
46.00 |
54.00 |
8.00 |
44.51 |
601.50 |
| |
83.00 |
96.00 |
13.00 |
0.49 |
23.25 |
| including |
83.00 |
87.00 |
4.00 |
0.93 |
52.60 |
| |
103.00 |
105.00 |
2.00 |
0.51 |
11.45 |
| |
332.00 |
333.50 |
1.50 |
0.21 |
8.50 |
| |
623.00 |
624.50 |
1.50 |
0.38 |
0.90 |
| |
645.50 |
647.00 |
1.50 |
0.61 |
2.90 |
| |
695.00 |
705.50 |
10.50 |
0.51 |
0.44 |
| |
801.50 |
803.00 |
1.50 |
1.28 |
4.90 |
* g/t = grams per metric tonne
Western Burns Block Cross Section Looking East
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The Burns Block drill program has focused on two complimentary exploration efforts since the drilling began in 2010. The first being delineation drilling of the high grade gold-silver zones in the west portion of the Burns Block. The second being eastward exploration towards the east portion of the block through a series of four west-east drill fences referred to as the Far North, North, Central and South Drill Fences. This extension drilling on the Burns Block continues to define a thick, pervasive, well-mineralized gold-silver zone. The drilling completed so far has been quite successful in increasing the potential tonnage of gold-silver mineralization that could be included in a larger open pit mining operation. As Bayfield continues to define the extension of the mineralized zone to the east, more detailed follow-up drilling will focus on targeting additional high grade zones and shoots within the mineralized envelope.
Airborne Geophysical Surveys December, 2010
(Left: Cesium Magnetic Survey; Right: VTEM Survey)
Click image to enlarge |
 |
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Western Burns Block Gold-Silver Zone Drill Hole Chart Click To Enlarge
East Burns - Intrepid Zone Exploration
The Company is currently focused on drilling a newly discovered high grade gold-silver zone on the eastern side of the Burns Block. Bayfield continues to drill test the down-plunge extension of this expanding mineralized zone which is projected to be the down-dip portion of Rainy River's newly discovered Intrepid Zone. Notable early results from the zone include Hole RR12-34W1 which intersected 25.50 metres grading 6.60 g/t Au and 34.20 g/t Ag including 15.00 metres of 11.06 g/t Au and 57.05 g/t Ag, RR12-30 which returned 19.60 metres of 5.45 g/t Au and 20.63 g/t Ag and and RR 13-07 returning 11.9 metres of 12.19g/t gold and 30.05g/t silver.
Rainy River Resources (TSX: RR) Intrepid Zone continues to expand in size, while infill drilling demonstrates excellent continuity within the zone. From their work to date, Intrepid appears to host parallel and plunging high-grade ore shoots, similar to those observed in the ODM Zone, at the heart of the Rainy River Gold Project.
Raymond Threlkeld, President and CEO of Rainy River Resources Ltd., commented: "The Intrepid Zone continues to demonstrate high grade gold with substantial silver values. High grade intercepts of almost half an ounce of gold and almost three ounces of silver over 9 metres in drill hole NR131523 exemplify the high quality nature of this zone. In addition, in thicker drill intercepts such as 36 meters of 2.24 grams per tonne gold and 12.28 grams per tonne silver in drill hole NR131494, we are finding a higher grade core, such as 7.2 grams per tonne gold and 32.8 grams per tonne silver over 7.5 meters, which further demonstrates the high grade potential of this zone. We will focus our drill program at the Intrepid Zone until the middle of the year, when we will prepare an inaugural resource statement."
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East Burns - Intrepid Zone Cross Section Looking West
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The assay results from the drilling at this new zone clearly show that strong gold mineralization is present over an expanding area, both down dip and along strike at the East Burns - Intrepid Zone. Exploration in the East Burns - Intrepid Zone area has been very active in 2012 with drilling on both sides of the Bayfield - Rainy River Resources property line.
Assay results from East Burns step out holes RR12-31 to RR12-34. Hole RR12-34 intersected a very strong interval of gold and silver mineralization in a position approximately 55 metres down-plunge from previously reported hole RR12-30 thereby extending the known mineralized zone at depth. Hole RR12-34 intersected a down-hole interval of 26.50 metres grading 8.82 g/t gold and 39.44 g/t silver including 11.60 metres of 17.04 g/t gold and 79.07 g/t silver. This down-plunge offset of the previously announced mineralization in hole RR12-30 contains the highest grade gold-silver interval intersected at the East Burns - Intrepid Discovery Area to date.
A trend of increasing grade and thickness of the southwest plunging, precious and base metal mineralized shoot is becoming evident based on the combined results of holes RR12-12, RR12-30 and now RR12-34. The gold-silver intercepts in these three holes, the deepest and highest grade to date at the East Burns, trace higher grade mineralization over a down-plunge distance of approximately 70 metres and the zone remains open at depth. This persistent, robust zone of gold-silver-base metal mineralization is part of a larger system which Bayfield discovered near the east property boundary in late 2011 and which has been roughly outlined over a nearly 200-metre strike length and approximately 200 metres down-dip.
The overall mineral assemblages of the high grade zones in the west and east Burns Block are nearly identical. The combination of the very similar geologic setting of both the west and east areas of the Burns Block is very encouraging. More importantly however is the very high success rate being seen in the form of underground grade and width of the mineralized intervals in view of the limited drilling done at the east-central Burns target area to date.
East Burns - Intrepid Zone Plan View
Click to Enlarge
The Company's properties are ideally located with easy access to roads and power. Ontario has low political risk and the Rainy River District has skilled labour and is one of the lowest-cost areas for mineral exploration and development in Canada.
East Burns - Intrepid Zone Cross Section 427060 East
Click To Enlarge
East Burns - Intrepid Zone Cross Section 427100 East
Click To Enlarge
East Burns - Intrepid Zone Assay Chart Click To Enlarge
Robert Marvin, P.Geo., CPG, Project Geologist for Bayfield Ventures is the Qualified Person as defined by National Instrument 43-101 and supervised both the project field exploration and the preparation of the technical information in this presentation.
Drill core analysis and assaying is being conducted by ACT Labs in Thunder Bay, Ont. The lab is ISO/IEC 17025:2005 (CAN-P-4E) certified. The drill core is split and sampled in standard 0.5 metre to 1.5 metre intervals. The core samples were analyzed for gold by 30-gm fire assay with AA finish and by gravimetric methods from assays over 5,000 ppb (over limit). Screened total metallic assays are being performed on samples assaying over 5,000 ppb. The core samples were analyzed for silver by Ag Aqua Regia-ICP finish and Ag Fire Assay-Gravimetric from assays over 100 ppm (over limit). The Company has implemented a quality assurance and quality control program to ensure that the sampling and analysis of all samples is conducted in accordance with the best possible practices.
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