A core drilling machine incorporating a laboratory scaled rotary drilling system is used to determine the penetration rate of the samples. The core drilling machine used in the tests is capable of drilling at 4 different speeds (rotation speed) and different pressure forces.

Table 1. Average sample analysis results for the Bulk Metallurgical test work sample The first data coming through, whilst incomplete, are indicating excellent results so far. Due to the large crystals of spodumene observed throughout the drill core, we have initially focused on coarse 10mm and 5.6mm crush sizes with results reported in Figure ...

The diamond drill core samples were divided properly and . ... Applicability and implications of the different drilling techniques described above for subsequent metallurgical evaluation work ...

METALLURGICAL TESTWORK PROGRAM. 1.Diamond Drilling. In April and May 2021, a total of six (6) diamond core holes were drilled at the Gold Basin Project, and the primary purpose of these drill holes was to obtain fresh and representative core samples of the mineralised oxide ore. Four (4) holes were drilled along a 900m strike length of the ...

The diamond drilling produced approximately 4500kg of core samples from 682 metres of core which was transported from site to an assay lab in Sparks, Nevada. Core has been photographed and quarter core cut in preparation for assay. Following assay of core, a selection of up to 500 kilograms

Drill Core Sampling. The advantages of obtaining core samples that provide a visual record of the rocks and ores sampled and at the same time furnish samples for assay have been pointed out under the caption Exploration by Drilling. The diamond drill, which employs either carbons or bort as cutting media, has been the type of core drill most ...

sample preparation •If core, whether cut or sawn and whether quarter, half or all core taken. • If non-core, whether riffled, tube sampled, rotary split, etc. and whether sampled wet or dry. • For all sample types, the nature, quality and appropriateness of the sample preparation technique.

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The core sample. The core is the ultimate goal of this process and there are products that can be added to drilling fluids to make core recovery easier and extend the life of drilling equipment. For example, these products can help solidify the sample, stabilize boreholes, lubricate equipment, prevent rust …

This video presents information about rock core drilling and core recovery of the rock core sample.

The Relevance/Non-Relevance of Drill Core Size in Mineral Resource Estimates. In all instances of drilling, maximum recovery of a representative sample is the objective. The general notion is that the bigger the core size, the better/more representative the sample. As a result, samples collected from smaller drill core are often considered ...

Diamond core drilling provides clients with high quality geological core samples, allowing for accurate modelling and resource estimation. Core samples also provide invaluable information regarding the geotechnical properties of underlying geology, critical for mine design in terms of safety and optimisation.

1 The results of the metallurgical studies on drill core-derived bulk sample material and independent analysis of smelter recoveries and smelter payables are expected to input directly into a ...

1 The results of the metallurgical studies on drill core-derived bulk sample material and independent analysis of smelter recoveries and smelter payables are expected to input directly into a ...

Samples from the drill core will be split in half sections on site and where possible, samples will be standardized at 0.5m down-hole intervals. One-half of the split sample will be sent to SRC Geoanalytical Laboratories (an SCC ISO/IEC 17025: 2005 Accredited Facility) in Saskatoon, SK for analysis which includes U 3 O 8 (wt %) and fire assay ...

below and presented in Figure 2, 'Drill Hole Location Plan'. Diamond core drilling of approximately 1,400 metres has started today. • Metallurgical sample drilling – completed four diamond core holes for 663.3 metres with significant oxide and fresh copper mineralisation intersected at the planned intervals.

For core sampling the same side is consistently sampled, half-core is retained in the tray for HQ for PQ quarter core is retained and half core is reserved for metallurgical test sample.

Diamond core drilling provides clients with high quality geological core samples, allowing for accurate modelling and resource estimation. Core samples also provide invaluable information regarding the geotechnical properties of underlying geology, …

Swapan Kumar Haldar, in Mineral Exploration (Second Edition), 2018. 7.3.8 Diamond Drill Core Sampling. Diamond drill core sampling cuts/splits the core along its length into two identical halves or mirror images with respect to mineral distribution as observed during logging. One half is grinded, reduced, and sent to the laboratory for chemical analysis. The other half is preserved in the core ...

Logging of the diamond drill core and sample selection for the metallurgical testwork program is currently being undertaken by the Company in conjunction with KCA. It is expected that sample selection will be completed by July 5, 2021. 2. Gold Recovery Testwork

Core drilling for sample collection for a Phase two metallurgical study completed PLS17-MET-C (line 660E): 153.5m total composite mineralization over a 176.0m …

Samples of drill cuttings will be collected for visual logging purposes will be continuously cored. At locations specified in the SAP, samples will also be collected and archived for possible future testing. Drilling and sampling procedures using a dual wall percussion, sonic, or air-rotary drill rig are as follows:

Drilling crewmen prepare to remove a core sample from a rig drilling near Greymouth, New Zealand. Drilling large diameter holes in concrete with a hole saw. Construction works carried out in apartment construction. Dark background, build, cement, circle. Drilling large …

Record a description of the material and its origin. 13 f Drill Core Sampling and Analysis Protocols 5. Submit five 200-500 gm sub-samples of the blank material to the primary laboratory to confirm low metal values. 6. Blank material is not processed in advance of its insertion into sample batches.

The samples were extracted as fresh drill core from areas/zones with known lithologies from within the current projects open pit limit. The samples were selected by TanGold and confirmed by the SGS geological services group that worked together doing the metallurgical sample selection. The

• A five tonne bulk sample of drill core has been dispatched for advanced metallurgical test work, including comminution and column leach testing • Drill holes demonstrate good internal continuity of high grade silver mineralisation • Substantial mineralised intercepts include: o MDPQ-001: …

The sample types best suited to metallurgical testing are either HQ (wireline diamond drilling that yields 63.5 mm diameter core to give approximately 8.7 kg/m of core) or PQ (wireline diamond drilling that yields 85 mm diameter core to give approximately 15.6 kg/m of core) diameter diamond drill core or underground/surface linear samples .

The first 60.5 meters of hole SJ21-04 was a metallurgical interval (PQ-sized core), while the remainder of the drill hole was completed as HQ (63.5mm diameter core) in order to explore deeper expressions of the copper-gold mineralizing system. Aside from the four metallurgical holes, all remaining drill holes are HQ-sized core.

The drill core is first washed and logged by a qualified geologist, and then split in half to provide a sample for geochemical analysis. Since so much time, effort and money is expended to obtain the drill core, it is worthwhile to study and log the core very carefully.

Core Drilling Program . ... As a subsequent check, cyanide shake assays and metallic screen analyses were conducted on select samples from the core holes and showed a good correlation with the initial fire assay results. ... Bottle roll metallurgical leach tests achieved gold extraction of 97.1%, 88.5%, 96.0% and 73.6% on four composite samples ...

The initial metallurgical test work is now concluding. SGS has now been commissioned to undertake the metallurgical variability phase for Buckreef. Highlights • Three diamond drill core samples were taken from the fresh rock ('sulphide' mineral resource) of the Buckreef deposit for …

Full HQ core was utilised to make up the bulk sample for metallurgical testing. • For metallurgical testwork, all samples were crushed by HPGR and screened to -3.35mm after completion of HPGR testwork. • At Nagrom laboratories, all metallurgical samples were weighed, dried and crushed to - …

It is common to find readily usable drill core sampling policies that many exploration sites use as part of their assay and prep labs procedures.Drill core being in many cases …

Sample collection The geological drilling and definition of the orebody, is expected to be completed to the JORC standard for measured mineral resource estimation. During the geological drilling program the core should be stored and extracted for metallurgical purposes, which reduces costs and time. Diamond drill core, of which there

Basics of Paleomagnetism - Collecting core samples in the field.