
Excerpt From
Geologists Report (1998).
By Donald L. Stevens, PHD
"Gold bearing quartz veins are widely known
throughout the Chugach Mountains and have been mined since
just after the turn of the century. The first mining on Bird
Point was in 1911.
The owner staked mining
claims on Bird Point in 1967, and has systematically
prospected and sampled quartz veins on the property since
that time, while maintaining the claims in good standing.
The work at the mines has shown numerous occurrences of gold
bearing quartz veins with potential economic gold value.
The recent realignment of
the Seward Highway across the claims necessitated
considerable rock removal for the roadbed. The newly exposed
rock was examined and ten quartz veins or vein swarms were
sampled. One sample, BP 10, returned an assay of 0.2718 troy
ounces of gold per ton of vein material. Another mineralized
vein was reported by the Project Engineer but it was
apparently off the mining claim and apparently was not
assayed*. The strike and dip of this occurrence
is not known.
This new data regarding
the occurrence of gold bearing quartz veins on the mining
claims in conjunction with the previous data are very
encouraging. An aggressive exploration program involving
geologic mapping, geochemical sampling, trenching and
subsequent drilling is recommended".
Donald L Stevens, PhD -
Stevens Exploration Management Corp. Anchorage, Alaska
*By the state, also sampling
and assaying.
TEST RUN ON ORE
At the
approximate mid-point of the claims there is a
north-south trending vein which has been traced
on the surface for over 700 feet. This
vein intersects the access road where that road
parallels the claims common boundary. In
1993, 2860 pounds of ore were extracted at that
point and transported to a mill located in
Searchlight, Nevada. The material removed was
taken from an area measuring six feet by vein
width (approx.16 inches). Typical of
region geology, the vein is near vertical.
Virtually everything within that area was
collected and transported. Included were chunks of quartz, small pieces of quartz and greywacke, fault gouge, and dirt with a few alder leaves and twigs inadvertently included.
During the initial crushing, before the ore was further reduced, samples were periodically collected. In total 15 samples were submitted for assay. Some went to a lab in Wheat Ridge, Colorado and others to a lab in Jean, Nevada. The assay results indicated gold values ranging from 0.092 to 15.7555 ounces gold per ton (opt). The average, of the 15 samples was 2.526 opt. gold. One assay bead was tested for purity
which was reported to be 99.52% gold.
There are no figures available for the amount of gold actually contained in the ore processed. Let’s just say that in the processing some “slippage” occurred. Those familiar the milling of high grade ore will understand the correlation of the character of the operator with the reported yield. When three buckets of concentrates were picked up at the mill two
were marked 2.0 opt and the third, 3
opt. The chance of having three single
digit opt results, out of as many assays, is
about the same odds as winning the Power Ball
lottery. (By computing the weight of the
ore (2,754 pounds after drying), the average
head ore assay (2.526 opt) and subtracting
the average tailings assay (0.120 opt), the inferred
concentrates assay is
145.05 opt gold.)
The material
processed in 1993 was mined about 2000 feet
north of the mining activity that took place in
1911 and 1912 (see above excerpt from US Geological Survey Bulletin #642). At that site, located at the tide line, the ore was collected and transported by steamship to a smelter in Tacoma, Washington. The smelter reported the ore contained gold values of $52.75. In 1912 gold was valued at $20.67 per troy ounce. Dividing $52.75 by $20.67 arrives at the ounces of gold represented by $52.75. That figure is 2.522 troy ounces. (The amount of ore processed was 4200 pounds. Assay values would be
1.206 opt).
Ore submitted for
the two test runs apparently did not come from the same
vein. The direction (strike) of the vein
at the tide line apparently does not coincide with that
from which the ore was taken in 1993.
Hard rock miners have a few generally accepted "rule of the thumb" considerations when evaluating ore occurrences. If you have a vein exposed for 10 feet at the surface the rule
suggests it would extends at least 10 feet deep.
Ninety feet on the surface, the same amount in
depth and so forth. Another rule:
Ten cubic feet of quartz weighs one ton (well,
more or less) Using these two rules of thumb it
is possible to make a rough estimate of
the amount of gold contained in a portion of the vein from
which the ore was taken in 1993. That vein has
been traced on the surface for over 700 feet.
The rule suggests the vein to be at least 700
feet deep. For the following calculations
ignore the assumed depth of 700 feet. The
vein is exposed at the base of the rock face
next to the Seward Highway. From that
point the vein has been traced north, and
uphill, for over 700 feet. At the upper
end of the exposed vein, the elevation is
approximately 400 feet higher than at the
highway. That would form a triangle with a
vertical leg of 400 feet and a horizontal leg of
700 feet. (The 700 feet figure came from
measurement of an aerial photo, not from actual
surface measurement). From what is known of the
subject vein, an average width of one foot
appears reasonable.
The number of
cubic feet contained in the triangle can be
determined by multiplying 400 X 700 (a
rectangle) and dividing the result by 2 (the
triangle). The vein is considered to
average, more or less 12 inches in width so the result
represents the cubic feet of ore.
400 X 700 X 1 equals
280,000 divided by 2 equals 140,000 cubic feet
of ore. Divided by 10 (the approximate
number of cubic feet of quartz to weigh a ton)
shows the number of tons to be 14,000.
Multiplying the tons by the average assay value
of 2.56 opt indicates an inferred 35,840 ounces of gold within the triangle of ore.
A
caution flag here: The foregoing
figures are supported by only one assay
location. It came from an area of vein the
owner thinks may be part of, or adjacent to, a
pocket of ore. Which would be typical of the
general geological area. Two more assays
were conducted on the same vein, one at either
end of the 700 foot exposure. One assay
returned 1.201 opt and the second 0.54 opt.
The average of the three samples is 1.442 opt.
Multiplying 14,000 tons of ore times 1.442
suggests 20,188 ounces of gold. Probably a
more realistic figure.
The current gold price courtesy of Monex: http://www.monex.com/
watch the scroll at page heading.
The average assay of 1.442 opt falls pretty much in line with 1912 assay of the tide line occurrence (1.206 opt). The above calculations are presented to demonstrate the possible potential of the property. There are other known gold bearing veins on the claims and probably some yet to be discovered. As suggested, in the geologists report, an extensive exploration program is in order. That would be essential if one were interested only in extracting the ore as quickly as possible and moving on to
another project. If, as suggested, the plan were to use the ore as a nucleus for a tourism venture, the property is now ready for permitting and ore removal.
The axiom, location, location, location, applies. The individual or entity that purchases these claims will be
the second beneficiary of their location. There are not many of what
could be "fun" projects remaining. It's
appropriate that this one be available in Alaska.
America's
last Frontier
Supporting documents are being prepared and will soon be available on
this site.
They will include:
State records of Affidavit of Annual Labor filings.
Assay reports.
Aerial photographs, black and color.