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THUNDER RIDGE GOLD
Sediment-Hosted / Vein Gold Exploration Project
Thunder Ridge Gold Property Drill Map
Thunder Ridge Gold is EXCELLENT mid-grade Quesnel Terrane based sediment-hosted exploration project located along the west banks of Deception Creek approximately 50 miles north of 100 Mile House, BC.
The property was recently held by Spanish Mountain Gold who had it as their 2nd most advanced prospect next to the flagship Spanish Mountain deposit. The claims were allowed to lapse and BC Mining Properties was there to stake them.
The core deposit lies in the north by northwestern portion of the southern claims shown in the maps below. Based on more than 8220 meters of drilling to date, the deposit remains open to the north, south and at depth to the east. The northern half of the property remains virtually untested.
DRILL RESULTS TO DATE
SC004 Weakly Anonymous
SC006 Weakly Anonymous
EOH @ 25m Hole Lost
The northern half of the property has had little or no work done to it until 2010 when Happy Creek Minerals soil sampled much of the property for gold and silver and then drilled six holes with limited success.
Spanish Mountain Gold (SPA) who previously owned the adjoining property to the south (now part of BC Mining Properties) known as the Thunder Ridge Property has produced very encouraging drill results (i.e. SC023) less then 250m south of the northern claim line. SPA's November 2010 released report documents an airborne VLF-EM Geophysical survey which covers 75% of BC Mining Properties 596446 northern mineral claim.
After extensive examination of the reports along with other associated data,
it appears that the magnetic highs and lows can be interpreted and may be extremely useful in determining where and how this gold may lie.
Using an MI-HMG model (Measured Inline-Horizontal Magnetic Gradient) several areas of subtle intermediate ranged (not mag high or mag low) magnetic structures are seen within the geophysical maps. After careful plotting and correlating of all significant gold and silver (soil) anomalies on 596446, a pattern appears in that the peripheral edges of these predominately north by northwest striking structures which appear to be coincident to the anomalous gold in soils.
I believe after reviewing this document there are clear correlations between
the gold in soils, the geophysical structures and subsequent drill results.
The Measured Inline Horizontal Magnetic Gradient (MI-HMG) maps above are correlated to drill locations and gold found in soil samples. A clear north by northwest trend of mineralization is apparent in this model. A less defined trend of magnetics (red) runs north along the east (west of Deception Creek) in the area of DH 23 and 25 heading north.
I think it is IMPORTANT to note a couple of things. One is that wherever Spanish Mountain drilled into or towards one of these structures, they almost always hit gold. With exception of only a couple instances, most of the holes drilled are consistent according to the maps and drill locations. The second is that SPA drilled all of their holes in a westerly direction. Happy Creek pointed two holes to the East and two to the West at the Southern end of the property closest to the Thunder Ridge claim 537095. The two holes they drilled at the north end of the property were drilled in a westerly direction but because the survey did not cover this area, the focus in this report is the southern 75% of the claim that is covered.
Another interesting observation is
when SPA drilled away from or in an opposing direction from the
magnetic structures identified in the MI-HMG model, the assays and
intervals reported were weaker than the closest previously drilled
holes that were drilled within or penetrated into the apparent
Drill-holes SC017 and 10SC027 depicted in the diagram below coincide with this theory. What is interesting about SC017 are the high-grade intercepts at approximately 130 - 140m. These intercepts are some of the best for the Thunder Ridge property to date. 10SC027 was drilled approximately 50m east of SC017 and returned a couple of decent intercepts between 23m - 43m and then another 20m intercept from 221m - 241m but returned nothing in the high-grade gold interval area of SC017 between 130m - 138m (7.5m @ 8.84 gpt). My interpretation is that although the general trend for mineralization is plunging to the NE, the trend to finding additional high grade gold is also to the NW by following the parameters of the discrete geophysical structures identified in the MI-HMG model maps. Coincidentally the NW area has never been drilled. Spanish Mountain may have been led in other directions for various reasons, but now after the results of 10SC027 coming in a little weak and completely missing the high-grade I think the direction is obvious. The geophysical structure (outlined and shaded predominately green) continues NNW approximately 3km from SC017 and has numerous anomalous gold in soils plotted for the entire length of the structure. At the north end of the structure there are three extremely convincing soil anomalies ranging from 113ppb - 950ppb.
A second example, although somewhat different, but still supporting the same theory, pertains to SC020 that when drilled in 2009 did not intercept anything meaningful as it was drilled outside of any geophysical magnetic structure. In 2010 however, 10SC026 was spotted east of SC020 and appears to have drilled across the top end of
the small indicated structure. The result on this hole was 6.5m and 3.5m intercepts of low grade gold. I suspect if a third hole were to be spotted south and drilled toward the center of the anomaly shown on the map below, the grades and intervals would increase measurably.
Holes 17 & 27 and 20 & 26
A third example is SC023 and 10SC025. According to the maps SC023 was drilled within the boundaries of what is measurably closer to being a magnetic high but is still in the lower end of the high to low scale. The entire length of the hole was drilled within this spectrum.
In 2010, 10SC025 was spotted a distance south but most importantly west of the previous hole. This hole returned lower grades than SC023 as the bit progressed away from the magnetic structure.
I appreciate that in order to prove this theory two holes would have to be drilled from the same locations in opposing directions. There are however, too many coincidences on too many holes for it not to be strongly considered.
Holes 23 & 25
Drill locations correlated to the VLF-QD Model
This VLF-QD model above (page 22 from 31360) appears to be favored for geophysical interpretation. There are however, no meaningful correlations to gold values in holes 17, 21 or 22 if interpreting from the highs and lows depicted in this model. Using the MI-HMG model seems to be more consistent with any drill results to date on the Thunder Ridge claim with the exception of SC012.
If you apply the same logic to the four holes drilled by Happy Creek on the southern portion of 596446 the evidence
is also convincing. All four holes returned no meaningful results and were drilled into areas absent from any geophysical structures as depicted in the MI-HMG model.
I think it is also important to note that at the higher ranges of the magnetics (shaded in red using the MI-HMG model) the gold appears to be of a lower grade and generally deeper in the ground. In the lower ranges (shaded in green) the gold is generally a higher grade and begins to show at a much shallower depth. What is most encouraging is that both ranges are returning good gold.
Examples are SC023 and SC017 (seen above).
If the QD model is in fact the chosen model to make interpretations, then there may be a 2 km x 1 km band of gold and silver lying just north of the property line based on the results of SC023 and 10SC025 which were drilled into what appears to be a magnetic high. As mentioned earlier, this model does not give an interpretive explanation for the excellent results in the area of drill hole SC017.
FYI: Regardless of which model used, I believe a band of gold does lie north of the claim and more specifically at the top end of the structure where a single soil sample returned as assay of 1200 ppb gold. This sample is hugely anomalous and must not be overlooked.
In ARIS 31360 there is some discussion about how on one hole they drilled in to a high and hit gold then on the next they drilled into a low and hit gold.
Locations of 28 anomalous AU in soil samples plus Happy Creek's drill-hole
locations in 2010 on 596446.
The bulk of Spanish Mountain's drill-hole locations on Thunder Ridge
Plotted on a geophysical map (from page 605 ARIS 31360) the locations of Au soil anomalies ranging from 18.7 to 1200 ppb and Ag anomalies ranging from 3.5 to 10.1 ppm + Happy Creek drill locations in relationship to the MI-HMG magnetics
22 drill holes in relationship to the MI-HMG magnetics on Spanish Mountain's Thunder Ridge claim (now BC Mining Properties Thunder Ridge Gold Property)
Thunder Ridge 2009 & 2010 drill results
2010 Drill Locations
Spanish Mountain Thunder Ridge 2010 drill location map
What happened in 2010?
With proven gold at your doorstep, I
personally believe a narrowly-spaced fence should be drilled across the property to
prove an indicative path of the trend of mineralization regardless of any geophysical, geological or geochemical interpretations. Once you have done that, you can then determine if the science makes any sense.
Only two of the six drill holes put down
by Happy Creek were within a 100m proximity to any of the AU soil anomalies (ranging from 18.7 ppb - 1200 ppb). As well, none of the holes drilled were near the
Quote from Spanish Mountain's ARIS Report 29139:
"Soil samples were collected by digging with a mattock to a depth of 30 to 50 cm. Soil samples were shipped directly to Acme Analytical Labs in Vancouver."
Quote from Happy Creek's 2010 AR Report:
"The B or C horizon soil samples were collected from depths of approximately 25 to 35 centimeters depth, at 50m spacing... An approximate sample depth was 15 - 20cm. The samples were placed in labeled Kraft paper bags and hung and dried for a week to 10 days. Soil samples were packed into rice bags and shipped...to either AGAT or Acme Analytical Laboratories in Vancouver."
Think about it... Soil Samples being dug at different depths returning different
results... It all makes sense when you consider Spanish Mountain returned
the higher frequency of anomalous soils. Their samples were (according
to the reports) were being dug deeper than that of Happy Creek.
The highest sample taken on Spanish Mountains 593095 was 532 ppb in 2006. This sample was taken at 5761300N. A second highly anomalous sample of 320.6 ppb was taken 50m due north at 5661350 and then a third sample 50m due north of that at 5761400 returning 69.2 ppb Au. That's 150m of highly anomalous gold running vertically approximately 500m south of the 596446 claim line. Unfortunately, that is where the 2006 sampling grid came to an end.
Note the Legend at the bottom of Spanish Mountain's soils grid map (2006 report - ARIS 29139):
Note Happy Creek's Legend at the bottom of the Soils grid map (2010 AR Report)
It seems that what would be considered highly anomalous by Spanish Mountain (anything over 51.5 ppb)
did not warrant much of a look by Happy Creek as anything under 150 ppb was ranked at the bottom of their scale.
Considering that HC samples were coming from a depth of closer to half
that of SPA, it is not surprising that their sampling program came back with less than half the frequency of anomalous gold
of that Spanish Mountain. Overall, mineral claim 537095 returned approximately 28 samples ranging from 100 to 532 ppb.
Claim 596446 returned only 8 samples in the same range from 113 to 1200 ppb. If all was equal and
HC samples were dug to precisely same the depths a SPA's I think a case
could easily be made that the probability for higher-grade gold samples and
greater frequencies than what has been seen on the 537095 (original
Thunder Ridge property) exists on the northern claim that Happy Creek had under
option at the time.
FYI: I have read many reports and it has always been my understanding that in the Caribou Region where overburden is generally very deep that anything below 5 ppb AU would be considered background and anything above 20 ppb would be considered anomalous. Over 50 would be highly anomalous and anything over 100 ppb is considered hugely anomalous.
One last point pertaining to soil sampling. I have referred only to SPA's 2006 report 29139 which gold from 499 soil samples ranging to 532 ppb AU. In the most recent report 31360 conducted in 2009 but released November 04, 2010, SPA did a continuation sampling from the 2006 "Detail" grid in 31360 extending the already sampled area toward the property line to the north and to the east and west so they in attempt to effectively extend their drilling coverage using soils as it appeared to still be the best tool available and they clearly had some decent results so far using this science. What is curious to me about the results is they (SPA) pretty much got nothing back out a couple hundred additional samples (within the 593095 claim area). When you read the report, it states: "Samples were collected digging a hole using a tree planter to approximately 30cm" My bet is a different person dug these
new samples, and did not dig as deep as the 2006 program which quotes
digging 30 - 50 cm deep. Amazingly, the results look much like HPY's results
on 596446. The highest result was 266 ppb with the second highest being 100
ppb with most being within the expected ranges. What I find interesting in
all of this is that in the areas of drill-holes SC021, SC23 and immediately
north of SC017, they found no anomalous metal in soils. but this area
produced SPA's best drill results. The
following statement was one of the highlights on SPA's website after their latest round of drilling:
"New extension to gold system suggests exploration potential in areas lacking geochemical signature".
What does that tell you? It tells me that although soils are a useful tool,
they are not the be all and end all. It also tells me that possible
inconsistant soil sample programs may very well produce different results.
In this case; we have three different programs 2006, 2009 & 2010 conducted most likely at three different times of the year, dug to three different depths (according to the reports), assayed by three different labs (ACME, Echo-Tech & AGAT) and then analyzed by three different geologists all of which have different philosophies interpretations and expectations.
I think I have made my point with regards to the consistency in the science of soil sampling.
Part of the lack of success in HC's 2010 work program may have also been related to the frequencies and levels of anomalous silver
with too high of an expectation for the levels of gold in the soils. I
know for a fact that the belief was that the silver would eventually lead
them to the gold and I am confident Happy Creek was not aware of the geophysical information coming off confidential (2010-11-04) from within ARIS Report 31360
as the word "geophysical" is not mentioned their report.
Silver is quite mobile. Gold on the other hand does not move around much. That being the said; the location where you find gold in soil is most likely close to its source. When you find silver in soil; you need to ask the question; "how it got there?"
I believe the chances of the gold mineralization (less than 250m to the south) effectively ending at the claim line of 596446,
is unlikely. I also believe the chances of coming up short on a drill
program after not giving gold in soils (ranging to 1200 ppb) the merit
they deserve along with not being privy to potentially valuable data from a neighboring geophysical report and
then drilling into predominately anomalous silver geochem areas, rather than gold,
all were contributing factors leading to the lack of success on Happy
Creek's 2010 drill program.
Mineral Claim 596446 via Google Earth
Lay of the land view (support the migrating silver theory)
An interesting highlight and goes to support many of my comments and conclusions pertaining to this property
ARIS REPORT 31360
Highlights of Drilling Results Include:
"New extension to gold system suggests exploration potential in areas lacking geochemical signatures"
recommendation would be for an initial 16-hole drill program in the northern portion of the property to cover many of the anomalous areas identified in this document. I would fly the top portion of the claim and piece together the missing geophysical data in this area if practical. The three soil samples in this area range from 113 - 950 ppb AU and may be convincing enough to justify drilling ahead without it. I would at least resample and map the immediate area surrounding these anomalies to better insure drilling success.
With regard to
additional drilling in the southern portion of the claims, please see: ARIS Report 31360
Below is much of the data that was available to me prior to Happy Creek's
assesment report which came to me and was filed with MTO on February 11th, 2011. If in doubt; refer to the actual report because there are some discrepancies.
30377 Assessment Report diagram
GL 10 - 1
GL 10 -2
GL 10 - 4
GL 10 - 5
GL 10 - 6
GL 10 - 7
GL 10 - 8
Drilling North 2010
Drilling South 2010
Map for AG
Map for AU
Ag trend in soils
"SMALL OPPORTUNITIES ARE OFTEN THE BEGINNING OF GREAT ENTERPRISES"
LINKS & Other Important Information
Spanish Mountain Gold News Releases
OCTOBER 21st, 2010 NEWS RELEASE
Assessment Work Values
Click Linked Headings to Sort Table. Click on Assessment Report Number link for more detail.
|Report Number||Year||Latitude||Longitude||Work Cost||1986 Dollars||1992 Dollars||2002 Dollars|
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