LABORATORY for MATERIALS ANALYSIS
Bart Cannon Analyst / Owner, since 1984
email = email@example.com
1041 NE 100th Street
Seattle, WA 98125
206 522 9233
Electron Microprobe Analysis
Scanning Electron Microscopy SEM
X-ray Micro-Analysis EDS and WDS
X-ray Diffraction Analysis
Electron Microprobe Standards
MINERAL IDENTIFICATION ORE and TAILING MINERALOGY METEORITE and GEMSTONE IDENTIFICATION
CRIMINAL FORENSICS ART and ARTIFACT AUTHENTICATION MINERAL and SYNTHETIC MATERIALS REFERENCE STANDARDS
Electron Microprobe - Simple ID = $35 Full Report $ 125 / hr X-Ray Diffraction - Simple ID = $ 45 Multi-Phase = $125
ELECTRON MICROPROBE ANALYSIS
The ARL SEMQ has six wavelength dispersive and one energy dispersive x-ray spectrometers. Elements detected by x-ray spectroscopy are
sodium through uranium. The minimum detection limit is 0.03% of sought elements within the 3 micron analysis volume of the electron beam
by wavelength spectrometers, and 0.2% using the energy dispersive x-ray spectrometer.
The scanning electron microscope function is used to image the sample and select areas for analysis. Samples are surveyed using the
television rate back scattered electron detector. This produces a live image without blurring or lag.
Methods for Mineral Analysis and Identification
X-ray spectroscopy, crystal form or habit, and a mineral database is used to select the most likely identification of unknown mineral grains.
Solid solution content of precious metals within common metallic minerals can be determined using x-ray spectroscopy. An example of
the latter application would be, perhaps, the silver content of tetrahedrite within an ore sample.
Cathodoluminescence colors can be observed in real time through the use of the beam co-axial light optics. In the best case scenario a pink
colored beam can distinguish between 80 ppm titanium in sapphire and undoped sapphire.