Cobalt 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
Cobalt, in economically recoverable quantities, is usually mined as a
by-product of copper and nickel mining. About 45% of the world’s
cobalt is from primary nickel deposits, 32% from copper deposits, and
21% from primary cobalt deposits. Currently 40% of the world’s supply
comes from cobalt-rich copper ore from the Congo (DRC) with 38%
from Australia and South Pacific countries (Philippines, Indonesia,
New Caledonia, and Papua New Guinea), 11% from other African
countries, 5% from North America and 6% from other areas. Growing
demand and the instability of DRC-sourced cobalt are increasing
exploration efforts worldwide. Cobalt bearing minerals found in
economic deposits include: erythrite, skutterudite, cobaltite, and

Spectral Evolution’s oreXpress spectrometers are designed for
single-user operation in the field during exploration. They are
rugged and reliable with fixed optics and no moving parts to avoid
breakdowns. They capture high resolution spectra very quickly so
that a geologist can scan more and collect more data for planning a
drilling strategy that will maximize return on investment.

Using the oreXpress with EZ-ID with its two libraries, a geologist can
quickly identify an alteration mineral that may not be readily
identifiable by sight, matching an unknown sample against a known
spectral library. With EZ-ID the geologist can select specific spectral
regions to fine-tune the matching process for a more precise ID. If
the geologist wants to look at a particular absorption feature, the
geologist can highlight that or other features and EZ-ID provides new
matches. EZ-ID includes a Library Builder module for the inclusion of
project and location specific scans of known samples for comparison
with target samples.

By ordering EZ-ID with both libraries, a geologist has access to a
wide range of  match possibilities—more than 1600 spectra—for
exploration projects. There are six known samples of erythrite in EZ-

EZ-ID works right from the DARWin SP Data Acquisition software
included with all SPECTRAL EVOLUTION spectrometers and
spectroradiometers. All spectra collected with an oreXpress are
saved as ASCII files for easy import into other 3rd party analysis
software for mine planning, mineral mapping and 3D imaging.

In the core shack, the speed of the instruments is ideal for core
logging. In some cases, a single geologist has been able to log as
much 400 meters of core in a day.  The data can be used to show
mineralogy versus alteration type versus mineral assay.
 First in Full Range PDA Spectrometer, Spectroradiometer and Spectrophotometer Systems
A sample erythrite spectra from one of EZ-ID's libraries showing absorption features.