Zinc Exploration - Identifying the Primary Ore
1 Canal Street ◊ Unit B1
Lawrence, MA 01840 USA
Tel: 978 687-1833 ◊ Fax: 978 945-0372
Copyright © 2012 Spectral Evolution, Inc
Sphalerite is the primary ore in zinc exploration. Secondary minerals
associated with zinc include willemite, smithsonite and
hemimorphite. Zinc is an important non-ferrous metal used in
galvanizing steel to protect it from rust. Zinc is also used in
cosmetics, plastics, rubber, soap, paint, fertilizer and batteries.
Field identification and mineral mapping during zinc exploration can
be done using the oreXpress high resolution/high sensitivity NIR
field spectrometer. The oreXpress covers the UV/VIS/NIR spectral
range from 350-2500nm. It is portable and lightweight with an all solid
state photodiode array design with no movable optical parts for
reliable rugged field use.
Take spectral measurements in the field with a contact probe for fast
and accurate mineral mapping. Two lithium-ion batteries provide
portable scanning power for the unit and the contact probe with its
built-in light source. There are two contact probe options: our
standard 10 mm mineral contact probe and the 3mm Miniprobe for
focusing on smaller sample features.
Optional EZ-ID mineral identification software matches to known
samples from two libraries of 1500 spectra and more than 600
minerals. Geologists can use EZ-ID's match regions and score tables
to unmix minerals within samples for better identification of dominant
EZ-ID has twelve known sample spectra for sphalerite. The spectra all
show broad absorption features between 400 and 600nm, 600 to
800nm, 1200to 1800nm and 2000 to 2500nm. The EZ-ID libraries also
include three spectra for smithsonite.
In addition to matching to known samples, EZ-ID allows a geologist to
build their own libraries while scanning known samples and include
all metadata relevant to those samples such as location, operator,
sample type, color, and other descriptive details. The result is a
project/site specific library of known samples.
EZ-ID mineral identification software matches your samples against two libraries of
more than 600 mineral spectra. Here you see a library sample of sphalerite.
EZ-ID's libraries also include a sample of the secondary mineral associated with zinc,