LABORATORY SERVICES

Our Qualified Chemists and Assayers are dedicated to configuring Optimized Metal Recovery and Accurate Results.  

Common Methods of Gold Analysis:

  • Fire Assay

  • Flame & Graphite Furnace Atomic Absorption

  • ICP OES

  • ICP OES MS

FIRE ASSAY

We Assay Base Metals, Gold, Silver, and Platinum Group Metals.  

Arrakis will Customize Flux for Unique or Refractory Ores.  

Fire Assay Beads are analyzed by Graphite Furnace & Flame Absorption. 

Fire Assay is the Industry Standard used to Validate your Project when seeking Financial Investment or Bank Loans.

UNDERSTANDING THE FIRE ASSAY PROCESS

Click on each image

Crucible in 2000 Degree Furnace

Crucible in 2000 Degree Furnace

Methodology involves mixing ground ore with dry chemicals (flux) & fusing in hot furnace.

Molton

Molton

Flux & ore are mixed together & put into a crucible. The crucible is placed in a hot furnace to initiate melting of ingredients.

Fire Assay Molton

Fire Assay Molton

The flux is designed to draw out the impurities within the ore into the molten glassy slag, collecting the precious metals into lead & silver.

Glass-Lead Button

Glass-Lead Button

During the fusion, chemical & thermodynamic reactions occur, resulting in a glassy slag & a lead-silver button.

Cupels Entering Furnace

Cupels Entering Furnace

Lead button is then placed in the cupellation furnace

Cupellation Furnace

Cupellation Furnace

The lead button contains the precious metals, silver and gold from the ore.

Cupellation

Cupellation

Cupels exiting the furnace.

Gold Bead

Gold Bead

End result is the production of physical precious metal bead

LABORATORY  INSTRUMENTS

Au & Ag Analysis

Au & Ag Analysis

GOLD & SILVER ANALYSIS

PGM Analysis

PGM Analysis

PLATINUM GROUP METALS ANALYSIS

ICP OES

ICP OES

ELEMENTAL CHARACTERIZATION

Graphite Furnace

Graphite Furnace

OPERATING GRAPHITE FURNACE ATOMIC ABSORPTION

Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES), is an analytical technique used for the detection of chemical elements. It is a type of emission spectroscopy that uses the inductively coupled plasma to produce excited atoms and ions that emit electromagnetic radiation at wavelengths characteristic of a particular element. It is a flame technique with a flame temperature in a range from 6000 to 10000 K. The intensity of this emission is indicative of the concentration of the element within the sample.

Atomic Absorption Spectroscopy (AAS) is a spectral analytical procedure for the quantitative determination of chemical elements using the absorption of optical radiation (light) by free atoms in the gaseous state. AAS can be used to determine over 70 different elements in solution.

Inductively Coupled Plasma Mass Spectrometry (ICP-OES) Is a type of emission spectroscopy that uses the inductively coupled plasma to produce excited atoms and ions that emit electromagnetic radiation at wavelengths characteristic of a particular element. It is a flame technique with a flame temperature in a range from 6000 to 10000 K. The intensity of this emission is indicative of the concentration of the element within the sample. In addition it breaks down elements contained in the the analysis into their individual isotopes.

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