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ASD – Panalytical | TerraSpec 4 Hi Resolution

TerraSpec 4 Hi-Res Mineral Spectrometer


Trusted by top exploration geologists around the world, the rugged and portable TerraSpec® 4 mineral spectrometer provides rapid identification of alteration minerals that provide vectors to economic mineralization.

Use the TerraSpec near-infrared analyzer to determine the viability of mineral exploration targets faster and more precisely than ever before. Capture accurate spectral data more quickly, especially for samples with darker mineral features. All without the sample preparation other instruments may require.

Learn more about the TerraSpec - simply fill out the form to the right and a product specialist will contact you shortly.

TerraSpec Exploration Applications

  • Exploration targets
  • Directing drilling programs
  • Deposit mapping
  • Core logging and drill cutting analysis
  • Early-stage mine planning
  • Geology in remote sensing

Sample Minerals Identified

  • Iron minerals such as hematite, goethite, garnets, and pyroxenes
  • Other transitional metal-containing minerals
  • Rare Earth Element (REE) minerals
  • Ammonium minerals, clays, micas, sulfates, carbonates, chlorites and serpentines
  • Other hydroxyl-containing minerals such as amphiboles, epidotes, apitites, tourmalines, topaz, diaspore, and many of the arsenates
  • Hydrous silicates such as opal, beryl, and zeolites

ASD Inc., now a PANalytical company, is a leader in providing spectroscopy solutions for mineral exploration and ore analysis in mining production.

Technical Specifications:

Wavelength range

350-2500 nm


3 nm @ 700 nm and 6 nm @ 1400/2100 nm

Scanning time

100 milliseconds

Signal-to-noise ratio

VNIR:  9,000:1 @ 700 nm
SWIR 1:  9,000:1 @ 1400 nm
SWIR 2:  4,000:1 @ 2100 nm

Stray light

VNIR:  5000:1 (0.02%)
NIR:  10,000:1 (0.01%)

Wavelength reproducibility

0.1 nm

Wavelength accuracy

0.5 nm



VNIR detector

(350-1000 nm) 512 element silicon array

SWIR 1 & 2 detectors

(1001-1800 nm) & (1801-2500 nm) Graded Index InGaAs Photodiode, TE Cooled

Certification and Approvals

CE certified:  EN61010-1:2001 2nd Edition
EU Directive:  2006/95/EC, 2004/108/EC
NIST traceable calibration
WEEE Compliance


Wired:  10/100 Base T Ethernet port with Ethernet cross-over cable
Wireless:  802.11g wireless card


(H x W x D) 12.7 x 36.8 x 29.2 cm (5 x 14.5 x 11.5 in)


5.44 kg (12 lbs)

Battery weight

1.2 kg (2.7 lbs)

Battery run time

Approximately 6 hours (without lamps or accessories)

Operating temperature

0 to 40° C (32 to 104° F)

Storage temperature

-15 to 45° C (5 to 113° F)

Input power

AC/DC switching power supply and a sealed lead-acid gel cell battery

AC input

90-240 VAC, 50/60 Hz

DC input

12 VDC, 60 W

Auxiliary port power

Output, +12 VDC, 27 Watt (max)


RS3™ spectral acquisition software, Compatibility with The Spectral Geologist and SpecMin, Seamless interface with ENVI®, ASD ViewSpec™ Pro for post processing, optional Indico® Pro


Rugged instrument transportation case; optional customized backpack with soft-sided travel bag


One year full warranty including expert customer support


Windows® 7 64-bit laptop (instrument controller)










































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