Table of ContentsWhy Distilled WaterHow to Purify Water for Laboratory Purposes without DistillingA Convenient Form of Apparatus for Distilling Water Why Distilled Water In all

Table of ContentsPreparation of SampleUsual Assay ChargeMethod of TreatmentDetermining the Amount of CopperHow To Make a Standard SolutionCopper Assaying by Modification of Kerl’ SwedishUsual Assay

Table of ContentsDescription of Touch Stone and Test NeedlesMethod of UsingAccuracy Possible Description of Touch Stone and Test Needles The touch or test stone is

Table of ContentsAnalytical BalancesWeightsAssay TonWeighing Analytical Balances Buy a good button balance, for should the final weighing of the gold or silver recovered from an

Table of ContentsUsual ChargeMeltingRecovering the ButtonEstimating Results Usual Charge Mix 10 grams of the pulped ore with 40 grams of pulverized potassium cyanide. Melting Put

Table of ContentsDrilling Bullion Bar for SamplingGold and Silver FinenessWeighing Sample Drillings and QuartationCupellationRolling Coronets and AnnealingPartingCalculating the Gold Content of BullionDetermine the Silver Fineness

Table of ContentsWhen is Scorification Assay UsedUsual ChargeMeltingPouring Definition of Term Scorification: Scorification may be defined as a reduction and a partial or preliminary cupellation successively

Table of ContentsClassification of OresSulphide OresFluxingMelting FurnacesCupels and CupellationWeighing and QuartationPartingCoarse Gold in Assay Sample Classification of Ores In fluxing ore for gold and silver, first

Table of ContentsBulk SamplingCrushingQuarteringSample Pulverising or Sample Pulping Bulk Sampling The first step in assaying is to obtain a sample, and it is all important that the portion