Precious metals analysis for minerals exploration companies searching for gold and platinum group elements.

Revenueland understands the processes and in-depth analytical requirements involved in supporting precious metals mineral exploration, including resource estimation, and the issues facing explorers when analysing for precious metals.

Precious metals analysis challenges:

◉ Issues of particulate precious metals when the precious metal forms a major component of a trace mineral, nuggets and clusters.

◉ The important requirement to separate streams of low and high grade precious metal samples.

◉ The requirement of customers to obtain cost effective “fit for purpose” assays.

◉ Issues of refractory gold and gold amenable to metallurgical processes.

Fire Assaying

In order for people to define rock to be mined as ore, they have to know the amount of the metal of interest contained in the rock. If there is enough of that rock, and if there is enough metal that can be recovered by processing and that can be sold at a price greater than the expense to produce that metal, then the rock can be defined as ore to be mined. The assayer determines the amount of the metal in the rock.

The method used to measure the amount of metal (or other commodity) of interest is called assaying. The most common and reliable method for assaying rock for silver, gold or other precious metals (platinum group elements) is fire assaying.

Abstract

The fire assay process is still the most accurate and precise method for measuring the gold content in gold alloys. Scanning electron microscopy and transmission electron microscopy have been applied to observe the change in microstructure of the samples undergoing the fire assay process. The performed observations reveal that the microstructure of the specimen is more complex than expected. Before the parting stage, the specimen is not a perfect gold–silver binary alloy but contains also copper–silver oxides and other residual compounds. The parting stage appears to be a dealloying process leading to a nanoporous gold nanostructure. What observed after partition explains the evolution of the shape and colour of the specimen and may allow for a better comprehension of the procedure and an improvement in the method.

Revenueland | Precious Metals Assaying Provides Maximum Returns

Accurate assaying is essential to arriving at best-cost solutions for customers. Revenueland’s experienced chemists and technicians ensure analytical results that offer the fastest settlement times and highest precious metal returns for reclaims in the industry.

Experts at our state of the art precious metal refineries meticulously examine and weigh metal scrap in order to determine the most appropriate sampling technology and technique for each material type. This process allows us to achieve a precise measurement and extract the maximum value of precious metal recovery from your reclaimed material.

Revenueland | Precision Measurement Yields Maximum Value

Revenueland’s precision approach in precious metal assaying allow us to deliver maximum value to our customers. Enhanced benefits of our services include:

◉ highest returns of metal (gold, silver, platinum, palladium, rhodium, iridium and ruthenium), translating into a cost advantage for our customers.

◉ fast settlements mean shorter return of value to the customer and improved cash flow.

◉ convenience of multiple refineries in Malaysia and Asia as well as a global recovery presence.

◉ variety of analytical methods and capabilities to ensure the most appropriate approach for different material types.

Revenueland | Unique Capabilities to Optimize Value

Our assaying capabilities include high purity materials testing and ultra-trace level testing for minor and trace elements in metal alloys and dopants. Experts at our facilities are equipped to perform a variety of tests depending on your requirements, including:

◉ Fire assay

◉ ICP