Playa Clays...feldspars and recovery and interferrances...time to all talk about the clays and what you all remember onthe interferrances:
techstocks.com
Read Ateba abd Tintina and Birch Mountain recent talk on Patented Compund A-15...it may increase Pilot Plant Yields:
.maybe you know athgat Thursday Dr Abercrombie is talking on the PT-PD- Prairie Gold Model inCalgary at the Lecture..and other info appreciated:
<<..
Birch Mountain ran up from 25¢ to over $1.60 in 5 weeks recently. No secret why---Canarim and Yorktown plowed in with huge purchases. Why did they buy? Moderately hopeful news but top notch management...>>
My letter to my Claimgroup today or was it yesterday...
Ateba Mines Inc -
Patent approved; first royalty agreement
Ateba Mines Inc
ABM
Shares issued 61,715,148
1998-12-11 close $0.05
Monday Dec 14 1998
Mr. Bill Dickie reports
In the Stockwatch of Nov. 11, 1998 Ateba Mines and its wholly owned
subsidiary, Claytech Environmental Services Inc., announced that the U.S. Patent
Office had given notice of allowability of the company's patent for the treatment of
clay in gold and diamond-bearing material.
An agreement has been reached involving the recovery of sulphides from
clay-bearing rock formations.
After testing of samples from clay-bearing rock formations in Ateba's/Claytech's
laboratory, a licencing agreement has been signed. The project development costs
will be borne by the owner of the deposit, but the terms of the agreement provide
Ateba with a minimum royalty payment of $500,000 per year. The owner of the
deposit may purchase this royalty for $1,500,000 within two years of completing
a feasibility study of the deposit.
This patent was based on test work in California on a gold and diamond-bearing
gravel deposit, cemented by clay and situated under a capping of lava rock. The
clay reject from the processing plant (tailings) contained gold unrecovered by the
plant. By treating the clay with the patented process the gold was recovered.
Ateba has been approached by several companies to solve problems related to
recovery of minerals from clay-rich deposits. The presence of the clay tends to
inhibit recovery because the clay encloses the minerals. The Ateba/Claytech
process liquefies the clay thereby liberating the minerals.
The original patent involves the recovery of phosphate from the clay storage areas
of Florida. Recent test work by Ateba has shown it can also recover phosphate
from clay balls rejected by the processing plants thereby providing another source
of revenue. This is an addition to the process which is the subject of a letter of
intent signed with Cargill Fertilizer, Inc. to recover phosphate from clay storage
areas (refer to news in Stockwatch July 23, 1998).
The problems of clay in mining are global, not just Canadian, and Ateba,
therefore, intends to search out partners to licence on a worldwide basis. At the
same time, the directors of Ateba are confident that these patents using
environmentally acceptable processes will shortly provide cash flow for the
company.
(c) Copyright 1999 Canjex Publishing Ltd. canada-stockwatch.com
old url (better for printing)
Ateba Mines Inc -
Notice of allowability for patent
Ateba Mines Inc
ABM
Shares issued 61,715,148
1998-11-11 close $0.07
Wednesday Nov 11 1998
Mr. A.C.A. Howe reports
The United States patent office has given a notice of allowability for a patent to be
issued to Ateba in respect of the recovery of precious metals and precious stones
from clay suspensions.
As previously announced, Ateba is the owner of a patent for treating Florida
phosphate clays and through its subsidiary company, Claytech Environmental
Services, a similar patent application to recover the phosphate and to solidify the
waste clay.
The receipt of the notice of allowability for the new patent in respect of the
recovery of precious metals and precious stones demonstrates Ateba's ability to
provide significant proprietary technology to the world's mining community. Ateba
intends to extend the United States patent protection provided by the new patent
to all relevant foreign jurisdictions.
Many existing gold and diamond mines have significant problems in recovering
precious metals and stones from clay suspensions due to the valuable high clay
content of the ore body and Ateba's process may provide a solution to these
problems. In addition, many deposits remain unmined because of excessive
amounts of clay locking up the metals.
In view of the receipt by Ateba of the notice of allowability, Ateba intends to
pursue the negotiation of licence agreements and joint venture arrangements with
persons having the problems described above. Ateba believes that the receipt of
patent protection for its technology is more significant than even finding an ore
body because it offers Ateba the opportunity to participate in various existing and
future mines all over the world.
(c) Copyright 1999 Canjex Publishing Ltd. canada-stockwatch.com
@@@@@ ED , this will be the start of Chenical Leaches being approved inAlberta amd then USA:
<<..
Read it all...it is leach that is accepted..chemical pre treat...see that 8-% loss of gold in Cynaide testing ...leach can multiply the results by 4...see? read Ashton posts over the Clay Chemical again...
At 05:08 PM 4/19/99 -0700, you wrote:
>.5g/ton is about .018 oz/ton. Should I get excited? Not yet. MIGHT be economic.
>Won't attract much interest, I am thinking.
>
>What say you?
>
>Ed
>
>Chuca Marsh wrote:
>
>> 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: Mon, 19 Apr 1999 08:59:46 -0400
>> >To.net>
>> >From: Chuca Marsh <.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....deleted...Grades as documented from the drilling were sufficiently encouraging to warrant assessment of the recovery base metals on a combined basis from their host.
Given continuity of grade as shown by the above reconnaissance drilling and their vast inferred lateral size extending over several tens of kilometres, the most attractive features of the mineralized zones discovered are their proximity to surface and unconsolidated nature, hence their amenability to low cost large scale bulk mining extraction. Provided collective extraction of the metals on a combined basis proves practicable, the shale sequences dominating near-surface geology at both properties represent immense metal bearing tonnages.
Following encouraging results of orientative leaching tests, Agra Monenco was retained during early 1998 to oversee the necessary benchtesting of larger samples at Ortech Laboratories to enable formulation of a suitable flowsheet for collective extraction of base metals on a combined basis from their host. The testwork was completed by late 1998 and it established unsuitability of flotation to the beneficiation of a concentrate from the fine grained ashy sulphidic shales as all concentrates produced reported compositions nearly identical to the feed material.
As previously reported in Stockwatch Jan. 21, 1999 and Feb. 10, 1999, while investigating alternatives to flotation during late 1998, gold was sporadically reported from certain samples of composite 1996-1997 drill core from the two properties, from experimental testwork conducted for the sole purposes of evaluating desliming procedures to help beneficiate sulphide and heavy mineral concentrates from the samples to assess reagent consumption economics of base metals recovery therefrom. The discovery of gold during the testwork was, accordingly, incidental and accidental.
The above tests were repeated during the end of 1998 and early 1999, sporadically reporting gold as before. The above work was completed by third parties under their direction, supervision and at their initiative and results are in the process of being checked by Tintina and by a parallel independent third party audit. To the extent that much of the recent work, including results reported herein from check assaying program in progress by Tintina, have so far relied on non-pulverized drill core composite samples which may or may not accurately reflect native gold content of the host rock, data from the work must be reviewed with caution as they are very preliminary .... deleted....
Table
Middlings1
(43 grams)
Table
Middlings2
(250 grams)
Table
Lights
(4437 grams)
Calculated
Weighted
Sample
Grade
(Note 4) 0.33 0.23
Notes:
(1) Chauncey Labs Dec. 1998
(2) Chemex Labs Dec. 1998
(3) Sample CMPB245 is a weighted
composite sample constructed from the
total of 57.9 metres cored in three
holes within the zone at the Buckton
property as follows:
Hole BK2 - 18.4 metres,
hole BK4 - 21.1 metres and hole
BK5 - 18.4 metres.
.... deleted...
This work has commenced.
While the recent results are at odds with previous analyses from the zones being tested, they are compatible with field observations of geology and mineralogy of the Second White Specks Formation as documented from several years of exploration by Tintina and independent work completed by others in the Birch Mountains (AGS/GSC in press). In particular, the presence of native gold in the Second White Specks Formation black shales has been known since 1995 and is not at issue, since native gold has been recovered by all parties working in the Birch Mountains from certain drainages from localities at, or immediately downstream from, zones of sediment recharge from slumping exposures of, or mudslides from, the Second White Specks Formation. Native gold has previously also been repeatedly recovered by Tintina in heavy mineral concentrates of material from the formation from the GOS1 gossan at the Buckton property, and similarly by others from their independent work in the area.
It is significant that, in the case of one sample from GOS1, sufficient gold grains had previously been recovered by gravity concentration, in duplicate, to represent a volumetrically estimated equivalent grade of 0.8 g/t. Assays of a pulverized subsample from the same specimen failed to reflect this grade returning very low levels of gold. The disparity had hitherto been attributed to possible gross inhomogeneities in distribution of native gold within the muddy shales. Other samples from the gossan have also yielded gold grains but not in sufficient quantity to justify estimation of a calculated grade.
Additional results will be released once received.
(c) Copyright 1999 Canjex Publishing Ltd. canada-stockwatch.com
Chuca
P.S.- Our ( WMA8 Claim Group's) new Nevada Claims are with some naxoian influences being in foothills of So Nevada that may influence San Bern County. RE:
>http://auctionbuy.com/wma8/nvclaims/nv.htm
>http://www.auctionbuy.com/wma8/
>http://thor.prohosting.com/~tomcor/minesite/
>
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