SPECTRAL EVOLUTION'S EZ-ID software with two spectral libraries of more than
600 minerals was used to identify chrysocolla in a sample from a copper mine in
Identifying chrysocolla in copper exploration
 First in Full Range PDA Spectrometer, Spectroradiometer and Spectrophotometer Systems
1 Canal Street  ◊  Unit B1
Lawrence, MA 01840  USA
Tel: 978 687-1833  ◊  Fax: 978 945-0372

Copyright © 2012 Spectral Evolution, Inc
Chrysocolla is one of the most important copper minerals as it has one
of the lowest operating cost extraction methods. It can easily be
leached out via heap leaching or
in situ leaching.

Chrysocolla has a distinctive spectra with major absorption features  
around 1900, 2230 and 2400 nanometers. It can be differentiated from
other minerals found with it such as kaolinite and muscovite by
concentrating on the feature around 2230nm. Malachite which is often
found with chrysocolla has its major absorption feature at 2275nm.
EZ-ID matches the target scan from the sample against two libraries of
more than 600 known minerals to provide an accurate match. Unmixing
can be performed using the EZ-ID match regions and score tables to
concentrate on the most important absorption features.  

Benefits of using an oreXpress with EZ-ID include:
Quickly collect a lot of scans
Cover more ground in less time for better mapping
Collect more accurate data for a more complete picture of the area
you are exploring
Get results immediately instead of waiting for lab analysis
Drill fewer holes with better results
In the core shack, correctly identify promising samples, save on assay
costs, and save your valuable logging data

The oreXpress delivers full range, UV/VIS/NIR capabilities from           
350-2500nm, is lightweight (under 7 lbs), rugged, includes integral
autoexposure and auto-dark shutter, and comes with a handheld
GETAC microcomputer with digital camera, GPS, and voice notes that
can be tagged to your spectra. In addition, our DARWin Data Acquisition
software saves  your scans as ASCII files for use (without
pre-processing) with third party software, including chemometric
analysis software.
 First in Full Range PDA Spectrometer, Spectroradiometer and Spectrophotometer Systems