Jesee, neews out just now at ACA ...help interpret this TTS news please: DAM it is ACS, but I have been following Dr Stewart Blossom and his unique technical intrepreatation system...I need some BMD- Alberta Thoughts on the new PR at JV guy..TTS...OK..anyone here can take a read?, Please ands TIA...very complicated...I think it is positive...nuggets...and pipe indicators...recovery above assay...DAM...a yweek is needed! RE ACS:
Archon Minerals Limited -
Archon Minerals completes winter program on Buffer zone
Archon Minerals Limited
ACS
Shares issued 7,224,293
1999-04-16 close $1.85
Monday Apr 19 1999
Also Dia Met Minerals Ltd (DMM.B)
Dr. Stewart Blusson reports
The winter exploration program on the Buffer zone (31.2 per cent Archon) has
been completed by the operator, BHP Diamonds Inc. Bulk sample drilling, using a
13.75 inch diameter reverse circulation drill started in early February and was
completed on March 12. Bulk samples were taken from two previously untested
diamond-bearing pipes. Sample summary data are:
Kimberlite Estimated
Pipe Name Metres Drilled Dry Tonnes
--------- -------------- ----------
Gazelle 1,056 234
Piranha 429 90
The kimberlite samples will be processed at the Koala dense media plant, at the
Ekati diamond mine. Results are expected during the course of this summer.
A spring exploration drilling program is under way and to date two kimberlite
pipes have been intersected bringing the total number of confirmed pipes in the
Buffer zone to 28. Five additional targets are slated for drilling. Microdiamond
analyses will be carried out on all new kimberlite discoveries.
In addition, several of the previously discovered pipes will be drilled for further
delineation and analysis. High resolution airborne geophysical surveys will also be
completed to better define targets for a summer drill program.
The Buffer zone is 300 kilometres northeast of Yellowknife in the Northwest
Territories and is a joint venture between BHP Diamonds Inc. (51 per cent),
Archon Minerals Ltd. (31.2 per cent), Charles Fipke (10 per cent) and Dia Met
Minerals (7.8 per cent). The Buffer zone surrounds the Core zone joint venture on
which the Ekati diamond mine is located.
(c) Copyright 1999 Canjex Publishing Ltd. canada-stockwatch.com
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Time
15:15
TTS
Tintina Mines Ltd
News Release
Tintina Mines Asphalt and
Buckton sampling results
ntina Mines Ltd -
Tintina Mines Asphalt and Buckton sampling results
Tintina Mines Ltd
TTS
Shares issued 7,102,277
1999-04-16 close $0.9
Monday Apr 19 1999
Mr. S.F. Sabag reports
Investigation continues of gold content of base metals enriched zones in black
shales at the company's Asphalt and Buckton properties in northeastern Alberta.
The zones have been under active exploration to assess economics of their
elevated base metal content, and while native gold had previously been physically
recovered from a surface exposure of the zone, low grades otherwise reported by
routine analytical work had mitigated against further investigation of gold content
of the rocks and the conflict between grades as recovered and grades as analyzed
had been attributed to inhomogeneities of gold distribution within the zone.
Additional details and background information for the two properties were
outlined in Stockwatch Feb. 26, 1999.
As reported, gold was sporadically reported from certain samples of composite
drill core from the two properties, from experimental test work conducted during
late 1998 for the purposes of evaluating desliming procedures to help assess
reagent consumption economics of base metals recovery. The tests were carried
out by Claytech Environmental Services Inc., a division of Ateba Mines Inc., at its
Sudbury facilities. The discovery of gold in concentrates from the test work was,
accordingly, incidental and accidental, and grades reported to Tintina were
considerably higher than its 1997 analyses of material from individual core
intervals comprising the composite samples deslimed.
Since the above tests were not formulated to determine gold grades, an aggressive
check assaying program was commenced by Tintina during late January to assess
the veracity of data reported to it from the above test work, and that of data
collected by it from routine analyses during the 1996-1997 drilling program.
Specific objectives of the check assaying program were (i) to investigate the
possibility of inadvertent or deliberate contamination; (ii) to evaluate veracity of
analytical procedures used in the above test work and during the 1997 analytical
work; and (iii) to help formulate a reassaying program intended to establish gold
content of the zones otherwise previously drilled in search of base metals. Other
objectives included expansion of scope of the work to assess the relevance of
holes previously localized to probe base metal enriched zones to proper
exploration for gold zones at the two properties.
Considerable assaying was completed during February and March. Results from
this work are erratic and are, on the whole, suggestive of extreme nugget effect
attributed to the suspected presence of native gold in at least some of the samples
tested. While work is continuing to mitigate nuggeting during analyses, several
objectives of the check assaying program have to date been satisfactorily met. The
recent tests serve to categorically rule out possibility of contamination during
earlier test work, and conclude that given the incidental discovery of gold during
routine desliming tests, analytical work then carried out was completed in
considerable haste and under test conditions ill-suited to accurate determination of
gold grades. To that end, some of the high as well as low assay results reported to
Tintina are equivocal and are likely artifacts of the combined effects of less than
rigorous analytical controls and shortfalls in sample preparation procedures, all of
which further compounded by the reliance on restrictive sample sizes as
necessitated by fire assaying procedures during analysis of concentrates. It is also
evident from the recent work that comparisons of analytical results from highly
variable sample sizes, ranging from standard 1AT subsamples to concentrates
prepared from five kilogram subsamples, may be misleading given the known
presence of native gold grains in the rocks and inherent nugget effect.
In addition to analytical work, a series of mineral investigations was also
commenced to compare concentrates previously analyzed with new material
concentrated under more controlled conditions. To date, native gold grains
recovered from a concentrate produced from work at Claytech were examined in
detail and found to be similar to gold grains previously recovered by Tintina from
the zone at the Buckton property and to gold grains recovered from stream
sediments downslope from other exposures of the Cretaceous zones elsewhere.
Examination of two recently prepared concentrates from two new samples has
reported diamond indicator minerals but as yet reported no gold and intentions are
to broaden this work in the months to come. The discovery of diamond indicator
minerals comes as no surprise, since same have been previously documented from
several bentonitic sections of drill core from the properties, and more recently also
from a suite of several hundred mineral picks from drill core samples and stream
sediments. Results from this work will be released at a later date under separate
cover.
In the interest of disclosure, results from reassaying of suites of multiple cuts from
individual samples from Asphalt property drill hole AS2 and Buckton property
drill hole BK2 are tabulated below, annotated with respective results previously
released therefrom. Other results in hand from the two holes comprise data from
round robin analyses of one 100 gram subsample of composite material from each
hole all of which reported nil gold (Lakefield Research, Activation Labs, Feb.
1999); results from other incidental assaying of isolated small subsamples of
composite material from AS2 reporting traces of gold (Activation Labs, Mar/99);
and results from recent bottle roll cyanidation tests of composite material from
hole AS2 which are summarized on a later page of this release.
Asphalt property hole AS2
Reassaying program 1999
From To Length Au
21.61 33.02 11.41 0.62 g/t
Additional material from drill hole AS2, from sections below the Second White
Specks formation, have also been submitted for assay, to reassess a number of
anomalous bentonitic sections which may well be extensions of the formation
below what had previously been interpreted to be its lower contact.
Buckton Property drill hole BK2
Reassaying program 1999
Total
Sample Weighted
Weight average
From To Assayed Au Au Au
m m max. min. g/t
60.78 61.13 65.2 0.68 3.41 1.21
61.13 61.46 112.1 0.26 1.86 0.55
61.46 61.78 110.1 nil 0.24 0.19
61.78 62.74 40.4 0.22 1.55 0.67
62.74 67.18 708.1 nil 0.21 0.10
67.18 67.30 49.9 0.05 0.65 0.20
67.30 68.45 119.0 nil 0.12 0.08
68.45 69.61 114.9 nil 0.04 0.03
72.63 72.93 132.2 0.08 0.22 0.11
69.61 70.62 112.0 0.08 0.58 0.13
70.62 77.22 834.3 nil 0.13 0.02
77.22 77.55 103.0 nil 0.27 0.19
77.55 78.44 109.9 nil nil nil
78.44 79.15 193.0 nil 0.08 0.03
Sieved metallics fire assays of non-pulverized samples, Loring Labs, Tintina check
assaying program March 1999.
Grades reported which are less than 0.05 of a gram per tonne should be regarded
to be in most part nil.
The majority of gold reported is from the fine fraction of the sample (less than 80
mesh).
The high clay content of the smectitic shales has continued to present challenges to
standard sample crushing and pulverization procedures as has their high organic
content varying 5 per cent to 11 per cent organic carbon by weight. Due to their
often ductile behaviour during crushing, many of the samples have necessarily
required longer than normal sessions in the crusher circuit to achieve acceptable
disaggregation, occasionally resulting in sample weight losses varying 2 per cent to
10 per cent. Given the known detrimental effects of overgrinding on native gold
bearing rocks, orientation tests were commenced to generally assess the effects of
pulverization on a suite of reconstructed samples. The tests suggest that
pulverization may not be as significant a systematic contributor to gold losses as
previously suspected since at least one of the reconstructed samples reported the
calculated gold grade after being pulverized. The tests do, however, suggest that
repeated sample handling and pulverization of isolated small subsamples may
indeed contribute to significant gold losses since assaying of some pulverized as
well as unpulverized test charges with known gold content under reported the
reconstructed calculated gold grade or reported nil.
Considering the highly variable analytical results documented thus far by all, recent
efforts have focused on the testing of progressively larger samples to establish
representative sample size. Orientative tests have also been directed toward
reduction of large samples by way of concentration to manageable quantities for
analysis, necessarily relying on deflocculants to segregate the high clay content of
the shales as a pretreatment to concentration. The efficacy of several deflocculants
is being evaluated including a deflocculant held under patent by Claytech which
has to date proven to be a good clay sequester reagent capable of producing
relatively high yields of clean mineral separates. Compositions of several such
separates are being assessed to determine whether they can be regarded as
chemical concentrates with beneficiated metal content.
To help formulate procedures for the analysis of large samples from the zones, 12
bottle roll cyanidation tests were completed during February to March at
Lakefield Research Laboratories on six 0.5 kilogram charges from each of two
composite samples. Although the tests were orientative, results therefrom served
to confirm extractability of gold by conventional leaching, following deflocculation,
using activated carbon. Of the total of 12 charges tested, only charges which were
deflocculated reported gold. Fire assaying carried out by Lakefield of 11 head
samples of the material cyanidated reported highly variable results reiterating that
considerable nugget effect is associated with routine gold analyses of the shales
and suggesting the presence of coarse gold therein.
Given that preg-robbing was also observed and confirmed during the above
cyanidation tests, gold grades reported therefrom are provisionally regarded as
being minimum grades which may be upgraded pending optimization of
cyanidation procedures or use of other leaching procedures better suited for the
treatment of carbonaceous material. Preg-robbing is a phenomenon common to
cyanidation of carbonaceous ores wherein adsorption of leached gold by organics
can considerably impede its recovery leading in some extreme cases to as much as
80 per cent losses of the gold to tails.
As of April 19, 1999, additional samples have been submitted for cyanidation to
corroborate earlier results. Several hundred core samples are also in hand
awaiting analysis, including footages resampled during February from archived drill
core. Work on the additional core samples will commence once a number of
procedural issues, believed to be the principal contributors to erratic results, have
been resolved. While nugget effect has thus far been repeatedly cited as a
convenient culprit, a good deal of the erratic data documented might be better
attributed to sample size and sample preparation issues.
In closing, most of the results from the recent work indicate that subgram overall
gold grades from the zones with an apparent enrichment nearer the upper and
lower contacts of the Second White Specks formation. Whether these grades will
ultimately prove to be economic is as yet unknown although overall grades ranging
0.5 g/t one g/t must be regarded as highly significant given the economic latitude
afforded large unconsolidated surface bulk-minable deposits. The zones
discovered at the two properties have analogues from elsewhere in the world,
from other bulk mining operations of large low-grade deposits hosted in
unconsolidated sediments. In the least, it is clearly evident from the recent work
that the two zones, otherwise explored only for base metals, also host gold
bearing sections which were missed by 1997 routine analytical work. The recent
test work has served to underscore that these sections merit closer scrutiny as do
similarly mineralized exposures of the Formation upslope from large gold placers
discovered at the McIvor property 25 kilometres to the north of the Buckton
property.
(c) Copyright 1999 Canjex Publishing
>Date:
>To: "
>From: Chuca Marsh <bondee@ici.net>
>Subject: BMD NEWS JUNE 98- see thichness, like this past weeks Clay Posts at Thread..
>
>Birch Mountain Resources Ltd BMD
>Shares issued 22,179,422 1998-06-03 close $0.25
>Friday Jun 5 1998
>See Lytton Minerals Ltd (LTL) Research
>Art Ettlinger gives no rating
>Lytton Minerals, the operator, and its joint venture partner, Birch Mountain, completed eight holes covering six anomalies in the Athabasca region of Northeastern Alberta. The property drilled lies along the northern flank of the Peace River Arch in an area of relatively thin glacial cover. HRAM surveys conducted earlier by Birch Mountain identified several targets with kimberlite characteristics. Detailed structural interpretation of the arch showed some of these targets to lie along potentially deep penetrating structures. While the limited drilling program did not intersect kimberlite, intensely fragmented structural zones were encountered. The partners are continuing with their structural interpretation of the region and are likely to begin additional geophysical surveys on their properties this spring. Drilling will resume after additional high priority targets are identified.
>Lytton recently announced the acquisition of an additional 773,000 acres of land adjacent to the Athabasca property. This expansion is the result of structural analysis, using geological, geophysical and topographic data. We believe this is an indication of their increasing level of understanding of area geology and the joint venture's commitment to diamond exploration in the region.
>
>(c) Copyright 1999 Canjex Publishing Ltd. canada-stockwatch.com
>
>
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