EZ-ID mineral identification software allows you to match target scan against two
libraries of over 1500 known mineral spectra. EZ-ID provides a match to the libraries
with a degree of confidence expressed as a percentage. You can decide to fine-tune
your analysis by focusing on specific features/regions within your target scan. The
software will change it's identification based-on the highlighted regions.
Identifying Clays in Mineral Assemblages
1 Canal Street ◊ Unit B1
Lawrence, MA 01840 USA
Tel: 978 687-1833 ◊ Fax: 978 945-0372
Copyright © 2012 Spectral Evolution, Inc
The accurate identification of clays in mineral assemblages can
provide key indicators that mineralized systems are present (or
absent). Using a field portable NIR geological spectrometer, like the
oreXpress, a geologist can identify different clays in samples and
note where and when alteration occurs, even in situations where
visual identification is not possible. Mapping of alteration zones can
provide useful information that indicates vectors to undiscovered
economically viable deposits.
Using an oreXpress field spectrometer a geologist can quickly collect
scans in the field at outcrops or in pits using the mineral contact
probe and a handheld microcomputer, tablet, or laptop. NIR
spectroscopy is fast, accurate, and non-destructive to the sample.
Using EZ-ID mineral identification software a geologist can clearly
seer alteration of clay minerals that often look very similar even to an
experienced eye. EZ-ID matches the target spectra against two
libraries (USGS and SpecMIN™) of more than 1500 known spectra.
Where low sulfidation assemblages might include illite,
montmorillonite, and sericite; high sulfidation assemblages might
include kaolinite and alunite. In addition to matching the taget to the
libraries with a percentage indicating confidence in the match, EZ-ID
also allows a geologist to select regions of interest at various
features in the spectra, for fine-tuning identification. For example, a
geologist can highlight different features for different minerals in
clay: kaolinite has absorption doublets near 2200 and 1400nm;
smectite at 1400, 1900, and 2200nm; illite has similar features to
smectite but with weaker absorption and additional features at 2340
In the core shack, the oreXpress can be used with the mineral
contact probe for rapid core logging, allowing for the creation of a
digital core library with all associated metadata, spectra, and notes.
EZ-ID makes it fast and easy to capture alterations and identify
changes in core.
Accurate identification of swelling clays, such as smectite, is also
important for selecting the appropriate processing methods.
Weighing seven pounds, the oreXpress easily fits in a backpack, Two
li-ion batteries provide for a full day of scanning in the field. It is
ruggedly built for reliability in the field with no moving optical parts, a
rugged steel-jacketed fiber optic cable (field swappable), superior
cooling design, and a sealed construction to prevent contamination
by dirt and dust.
The oreXpress provides a fast,
non-destructive instrument for
mineral identification in the
field or the core shack. No
sample prep is required.