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Fire River Gold Announces 20 g/t (0.58 opt) Gold Over 2.5 m (8.2 ft) at the Nixon Fork Gold Mine, Alaska
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VANCOUVER, BRITISH COLUMBIA--(Marketwire - Aug. 3, 2010) - Fire River Gold Corp. (TSX VENTURE:FAU - News; OTCQX:FVGCF)(PINK SHEETS:FVGCF - News; FRANKFURT:FWR - News; "FAU" or the "Company") -
-- 20 g/t (0.58 opt) gold over 2.5 m (8.2 ft) in hole N07U068
-- 13 g/t (0.38 opt) gold over 4.0 m (13.1 ft) in hole N07U066
-- Results pending for 16 additional underground holes and 7 additional
surface holes
-- Geological re-assessment work complete for 2007 and 2008 drill holes
-- Drill campaign up to 28,000 metres and underground mapping has commenced
-- Resource update Fall 2010
Fire River Gold Corp. continues to announce high grade assay results from its Nixon Fork Gold Mine in Alaska. The Company has received assay results and completed careful review of holes 66 through 69 completed in 2007 (N07U066 to N07U069). New significant intercepts include N07U068 returning grades of 20 g/t (0.58 opt) gold over 4.0 m (13.1 ft) and N07U066 returning grades of 13 g/t (0.38 opt) gold over 4.0 m (13.1 ft) as part of the ongoing geological re-evaluation program for the Nixon Fork Gold Mine in Alaska. A complete list of significant intercepts is provided in Table 1 for these 4 drill holes; it includes results of previously reported drill holes.
Table 1: Results from holes N07U066 to N07U069
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From To Length Length Au Au
Hole Number (metres) (metres) (feet) (metres) (opt) (gpt) Location
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N07U066 2.0 6.0 13.1 4.0 0.38 13 3300 Zone
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N07U067 0.0 1.4 4.6 1.4 0.44 15 3300 Zone
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N07U068 17.4 19.9 8.2 2.5 0.58 20 3300 Zone
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N07U069 4.0 6.5 8.2 2.5 0.41 14 3300 Zone
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During 2007 and 2008, the previous operator completed 9400 metres from mostly underground drill stations in 110 holes. The results for these holes were not reported by that operator and have never been included in a resource assessment of the mine. The geologic evaluation (re-logging) of the 9400 metres is complete.
Because the 2007 and 2008 results were not formerly reported, a careful review was initiated by FAU of all quality control and quality assurance procedures used by the former operator. Although original check assays from the 2007 drill program were not documented, it is clear that certified standards were used. The re-sampling program of the 2007 drill core is essentially a modified field duplicate exercise of the original assay results.
The re-sampling of the remaining half cores was fully analyzed except in rare cases where quarter cores were used. Sampling of core duplicates as compared to FAU's pulp duplicates can produce a high degree of variability in the results due to the nugget effect of gold mineralization that occurs at Nixon Fork. This nugget effect was evident in the bonanza grades reported for the 2008 drilling.
Every effort has been made to replicate the previous sample intervals except when a previous sample crossed a lithological or mineralized boundary. In these cases the new 2010 samples were terminated at such boundaries. The differences in lengths of the intervals may account for some of the variability in gold grades. In general, the assays are in conformity, especially for a comparison of field duplicate samples in a high-grade, coarse gold system.
Re-logging and sampling of the historic core is of critical importance to understanding the controls of gold mineralization as well as gaining confidence in the high grades. The differences in grades shown are typical of high grade, gold deposits with a significant nugget distribution.
To view Figure 1, please click on the following link: http://media3.marketwire.com/docs/fau83f1.pdf
For additional details, please refer to FAU's website at www.firerivergold.com in the section titled "news" which includes the results from the first group of drill holes; additional information about the geological re-assessment program; information about historic site production; a description of the deposits; additional information on the QA/QC measures and a description of our planned 2010 exploration drilling program.
Figure 1. is a cross section through the 3300 gold zone in the Crystal decline. This zone, as well as extensions of potential new zones to the south, was the focus of much of the underground drilling for 2007. The 3300 zone is pipe-like in shape and varies in diameter from a minimum of three metres to as much as 40 metres.
Underground drilling is typically completed in 'fan-like' arrays as shown in Figure 2. These fans define the limits of the high grade zones in the 3300. Most of the drilling in 2007 was completed between the 280 and 200 levels of the Crystal decline.
Relogging and sampling of the 2007 and 2008 drill core has been completed. Geologic work will now focus on selected zones from the pre-2007 core library, particularly in areas of favourable targets and mineralization. Work will also begin on a new resource estimate scheduled for completion by Fall of 2010.
Other near term tasks that have begun are underground mapping and sampling with particular emphasis on fault and fracture zones. As previously announced on July 27th, 2010, a diamond drill program of up to 28,000 metres has commenced at its Nixon Fork Gold Mine. Drilling is commencing on surface targets, particularly lateral or down plunge extensions of known mineralized zones which have the potential to provide additional resources to the mill. These types of targets include the Whalen, North Star, Mystery, Southern Cross, and J5A.
Following the Company's surface program, underground drilling will begin within the Crystal decline. The drill program is designed to expand resources, particularly in the area of the 3300 zone, as well as test three to four prospective zones. Mr. Will Beach, FAU's Underground Supervisor, has examined the workings of the Crystal decline and found them to be in excellent condition, with only minor cleanup needed. Mr. Beach states, "The Crystal decline and associated levels can be ready for drilling immediately."
To view Figure 2, please click on the following link: http://media3.marketwire.com/docs/fau83f2.pdf
Table 2. A comparison of the Original 2007 assays with the check assays from 2010 (field duplicates).
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CHECK ASSAYS
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ORIGINAL ASSAYS Field Duplicates
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Hole From To Length Au From To Length Au
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Number (metres) (metres) (metres) (gpt) (metres) (metres) (metres) (gpt)
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N07U066 2 6 4 13 4 6 2 15
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N07U067 0 1.4 1.4 15 0 1.4 1.4 10
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N07U068 17.4 19.9 2.5 20 17 19 2 7
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N07U069 4 6.5 2.5 14 4 6.5 2.5 29
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The Nixon Fork Gold Mine produced significant bi-product copper and silver. Until the closure of the mine in 2007, reported copper production was 1.27 million lbs and silver production was 19,566 ounces from 106,137 tonnes mined. Historic recovered grades are about 0.6% for copper and 0.18 opt for silver.
The project is being managed by Richard Goodwin, P.Eng, VP Mining for Fire River Gold and is the Qualified Person for this news release.