Ann: Further coarse gold in bulk sampling at Loudens Patch, page-46

Originallypostedbygoldtowin

WhatareyoutalkingaboutKen. DeGreyranthesamplesthroughacrusherandgravitymachinetogetover4gptinthefirstsetofbulksamplesand3gptinthesecondset. Probablygetbettergradesoncetheyrefinethecrushsizeandgetthesamplestoabettergravitymachine. That'sthecoursegoldonly. Nofineswhicharevisibleinthepans.


ThepositivecoarsegoldresultsdemonstrateDeGrey’ssamplingprocedureandrecentlycommissionedcustom-builtcrushingandgravitysamplingcircuitisaneffectivetooltorapidlyandsystematicallyassesstheconglomerateunitsforcoarsegoldmineralisation.DeGreydefinescoarsegoldasvisiblegoldtothenakedeyeorapproximately>0.1mm. DeGrey’srapiddeterminationofcoarsegoldcontentintheprospectivehostunitsisconsideredanimportantfieldtool.

AfulldescriptionofsamplingandcrushingproceduresisprovidedintheBulkSamplingandProcessingsectioninAppendix1.

Todate,six(6)250kgbulksamples(LB250_001to006)havebeencollectedandprocessedbyDeGreyfromLoudensWest.SamplesLB250_001,LB250_003andLB250_005aresamplestakenfromthemappedconglomeratehorizonimmediatelybeneaththeyoungeroverlyingMtRoeBasaltandabovetheirregularcontactwiththeunderlyingolderMallinaFormationsediments(Figures2and3).Resultsareconsideredveryencouragingwiththethreeconsecutiveconglomeratesampleshighlightingstrongcoarsegold,withtwosamplesyieldinggoldnuggetsandsignificantcoarsegoldinthepanconcentrate(seeTable1andPlates1-3).

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Thethreesamples(LB250_002,LB250_004andLB250_006)takenfromtheMallinaFormationimmediatelybelowtheconglomeratehorizonarealsogoldpositive,albeitwithlesseramountofvisiblecoarsegoldinthepanconcentrate.ThecoarsegoldintheMallinaFormationisinterpretedtorepresentgoldoccurringincracksandsmall“clots”ofconglomerateatthecontactbetweenthetwounitsandheavilydilutedbytheMallinaFormationwhichmakesupapproximately80to90%oftherockmassinthesesamples.

Furthermore,goldendowmentappearshigherwheretheconglomeratebedsarethickest(1.2to1.5m)whichisevidentinsamplesLB250_003and005whichproducedgoldconcentratesweighing0.98and1.98gramsrespectively.

Thusfarthebulkofthecoarsegoldcomponentoccursasnon-metaldetectablenuggetswithparticles<2mmsizefraction.Veryfinegoldparticlesarealsoseentofloatinthepanandareverydifficulttocollectandassesswiththisstyleofsampling.Theveryfinegoldparticlessuggestfurthergoldmaystillbehostedinthe“sampletails”andthisgoldcontentwillneedtobeassayedinfuturedetailedbulksamplesatanindependentlaboratory.

You are talking arrant nonsense.   De Grey have spent the best part of a year to selectively bulk sample 1.5 tonnes over 20 metres to report on 'concentrate grades' not 'ore grades'. They need to clarify 1. In the last 6-12 months how many tonnes of gold bearing conglomerate has been excavated. 2. If a considerable tonnage evident from the photos has it been processed through a commercial scale gravity plant - a minimum of  20 tph not a laboratory scale Knelson concentrator. 3. If not why not when that was the planned work program -why get a POW  and Heritage Survey in place at considerable cost only to process 1.5 tonnes !  4. Why haven't they got a proper gravity plant in place that has sufficient concentrators to recover ALL the gold including fine gold as my plants do so you can then relate that to the tonnage processed to get an 'ore grade' not a concentrate grade.  De Grey are another Novo -   A whole 1.5 tonnes over 20 metres in the best part of a year- it beggars belief.