SAMPLE PREPARATION AUSTRALIA

 

Sample Preparation - Australia

Samples submitted for ppb detection of gold are prepared in dedicated facilities, completely separate from samples submitted for ppm detection. Such separate facilities exist at our Adelaide, Kalgoorlie, Perth and Townsville locations.

 

SORTING AND DRYING

Sorting and drying of samples prior to preparation                                                 $0.50 /kg

(Applies only to consignments that are neatly packaged and labelled; sample submissions poorly labelled or packaged will incur additional sorting charges.)

 

PRIMARY CRUSHING AND SPLITTING

Conventional jaw crushing to nominal minus 10mm                                                $0.50 /kg

Boyd jaw crushing to nominal minus 2mm                                                             $1.50 /kg

(includes simultaneous rotary splitting if required)

 

PULVERISING - Conventional Preparation Systems

Most devices used in the crushing and pulverising of samples can impart trace levels of contaminants to the samples for analysis. Low chrome steel is the preferred material for pulverising bowls as the iron contamination is usually negligible, compared with the iron levels commonly encountered in most geological materials.  Other options such as tungsten carbide and zirconia bowls are also available if required.

Genalysis aims to achieve 85% minus 75µm using a single stage mix and grind, however the hardness of some samples is such that this may not always be achieved using standard pulverising protocols. The maximum size sample the mills can pulverise efficiently is 3kg. If fine grind is essential, please discuss sample preparation options with Genalysis prior to commencement of any project.

(a)       up to 300g (chrome-steel bowl)                                                                $2.00 /sample

(b)       greater than 300g, up to 750g (chrome-steel bowl)                                  $3.50 /sample

(c)       greater than 750g, up to 3000g (chrome-steel bowl)                                 $5.00 /sample

(d)       greater than 3000g (chrome-steel bowl)                                                   Price on application

(e)       up to 100g (tungsten-carbide bowl)                                                          $7.00 /sample

(f)        up to 100g (zirconia bowl)                                                                       $10.00 /sample

Cleaning of pulveriser after sample with gold free quartz                                      75% of cost of pulverising

 

AUTOMATED PREPARATION – Robotic (Available at Perth only)

The use of this cutting edge technology has a number of advantages including rapid throughput, reliability, unparalleled consistency and almost complete exclusion of human error. Fully programmable comminution parameters and synchronised process control ensure that samples obtain the requisite treatment consistently.

The multi-function preparation system is capable of handling bulk samples up to 10kg with a crushing capacity to nominal minus 2mm and a grind capacity of 300g to 1.2kg. Genalysis will automatically initiate the use of one barren quartz wash between samples for all jobs unless otherwise instructed.

•  single stage mix and grind (one quartz wash), 300g up to 1.2kg                  $3.10 /sample

• crush, single stage mix and grind (one quartz wash),                                    $3.50 /sample

           300g up to 1.2kg

• crush, single stage mix and grind

Sample Weight	One Quartz Wash	No Quartz Wash
> 1.2kg < 3kg	$5.25	$5.00
> 3kg < 5kg	$6.35	$6.10
> 5kg < 7kg	$7.50	$7.25
> 7kg < 10kg	$8.75	$8.50

 

SIEVING/SIZING

Dry screen partial or total sample to specified mesh size(s)	$75.00 /hour
Wet sieving (to client's specification)	$75.00 /hour
Screen test for sample preparation quality at a nominated aperture size	$6.00 /sample
Multi-point determination of particle size distribution by Malvern Mastersizer and reporting size distribution	$60.00 sample
Reporting weights of samples "as received" or weights of fractions recovered	$1.50 weight

 

SPECIAL PREPARATIONS

Quarantine treatment – pulps (in standard paper envelopes) *	$1.20 /sample
Quarantine treatment - bulk samples *	$3.00 /sample
Riffle splitting	$75.00 / hour
Mat mixing of assay pulps submitted for check or further assays	$1.50 /sample
Core cutting with diamond saw to client's requirements	$100.00 /hour
Compositing of specified samples	$75.00 /hour
Drying and desiccation of hygroscopic samples prior to weighing	$1.50 /sample
Reporting weights of samples "as received" or post drying weight	$1.50 /weight
Client specified preparation (Technician)	$75.00 /hour
Client specified preparation (Chemist)	$150.00 /hour
(*) Note: normal sorting and drying costs are not additionally charged

 

SAMPLE STORAGE

All solid samples (assay pulps, bulk pulps, and residues) will be stored without charge for 60 days after completion of analysis. After this time all samples will be stored at a rate of $3.00 per cubic metre per day until the client's written advice regarding return, collection or disposal is received.

Samples submitted as liquids will be stored (at ambient temperature) without charge for 60 days after completion of analysis, and then discarded unless advised otherwise in writing.

Expenses related to the return of samples will be charged at cost.

Disposal of samples is charged at $75.00 per cubic metre.

Retrieval of random samples from storage (i.e. not complete job lots) for further analyses or return to clients is charged at $75.00 per hour.

 

FREIGHT

Freight expenses incurred will be passed on at cost. For further information please see “Freight of samples to Genalysis” and “Freight of samples to Genalysis from Southern and Eastern Africa” documents on our website.