Petrographic and sterozoom binocular study of diverse industrial minerals and their deposits. Process mineralogy and liberation studies. Example commodities have included: garnet, frac sand, heavy mineral sands (zircon, rutile, ilmenite, monazite), tungsten (scheelite and wolframite tailing studies), scheelite and high-alumina refractory minerals. Some studies have required mineral chemistry as an extension to more routine studies. Some examples are included to the right.
Meet ASTM standard for qualification of petrographers.
Use a transmitted and reflected light petrographic microscope and stereozoom binocular microscope. Fully equipped facility.
Identify the rock type. Describe and document mineralogy, alteration / weathering, deleterious minerals (e.g., iron oxide), unstable minerals (such as expanding clays), grain shape and ratios (including statistical analysis of grain length and width), accessory minerals that could degrade concentrate quality or that could be by-product or co-product minerals, mechanical strength and integrity of grains, and mineral chemistry.
Liberation studies are comprehensive and use crushed and ASTM E-11 specifications for 6-10 mesh size fractions depending on the deposit. Beginning from the most coarse mesh fraction, each size fraction is examined using a stereozoom binocular microscope to determine the "liberation point" for the potentially economic mineral. In addition, visual mineral percent estimates are made for up to 10 sub-samples in each mesh size fraction.
Reports are profusely illustrated in color. Clients are encouraged to review report results in draft form to ensure the report's clarity and meets the client's specifications. After review comments are addressed and the report is finalized, only then is the client invoiced. Reports are in digital formation (PDF) and all residual materials, thin sections, scanned lab notes, and other data are returned to the client in digital format.
Access to x-ray diffraction (XRD), scanning electron microscopes (SEM) and other advanced analytical instruments.
By arrangement, "data mining" including comprehensive database searches to assist exploration programs or corporate strategy planning, core logging, and site studies including investigations of cause of decreased commodity quality.
Tailings studies (mineralogy, size fractions, and chemistry).
Contact us about special problems not listed. We may be able help. Email: Dr. Reid, voice: 919.618.0810.