ASD TerraSpec 4 | Hi-Res Mineral Spectrometer

Overview

Recognized as the de facto technology for mineralogical analysis, the rugged portable ASD TerraSpec mineral spectrometers are trusted by top geologists for performing fast, precise pathfinder mineral identification for the identification of exploration targets.

The ASD TerraSpec 4 Hi-Res mineral analyzer brings new levels of efficacy to mineral exploration technology. This state-of-the-art mineral spectrometer offers enhanced performance in the SWIR 1 and 2 regions and a 6 nm resolution to help you determine the viability of mineral exploration targets faster and more precisely than ever before. These enhancements provide you with the ability to capture accurate spectral data more quickly, especially for samples with darker mineral features.

Best for: users requiring maximum sensitivity, ideal for outdoor and remote sensing applications.
User-replaceable fiber optic cable: SMA 905connector allows quick cable replacement in the field, minimizing downtime.
Use with artificial light sources: can compensate for lower sensitivity with artificial light sources.
Bifurcated cable compatibility: ideal for precise spot measurements in mining applications.
Geology and mining applications: designed for enclosed formations, core logging, and reconnaissance sampling.

Key applications

The ASD TerraSpec 4 Hi-Res mineral spectrometer can be used in many industry applications, including:

Oil sands and oil shale analysis: ASD instruments are used for onsite monitoring of kerogen and bitumen quantities
Petroleum exploration: Petroleum geologists utilize ASD instruments for improved definition of deposit mineralogy, real-time strata correlation, hole stability monitoring and dolomite porosity determination
Mining production and mineral processing: Evaluate and monitor mineral and ore properties to maximize a variety of mining processes and operations
Mineral exploration
Deposit mapping
Mineral assemblage identification
Drill cutting analysis
Core logging
Determining geochemical gradients
Clay species delineation
Faster vectoring to ore body

Made for geologists

For mining exploration geologists, these improvements translate into faster data capture at exploration targets and drilling sites. The improved data quality provided by the TerraSpec 4 Hi-Res mineral spectrometer also allows for accurate assessment of low-concentration and low-reflectance minerals, like iron-containing minerals such as serpentines and chlorites, which were previously difficult to measure. Benefits include:

Enhanced optical configuration provides more precise spectral results for superior spectrum clarity and definition
Industry-leading performance in the SWIR 1/SWIR 2 regions for unparalleled alteration mineral identification
Standard ruggedized steel-covered fiber optic cable ensures consistent spectral quality
No need for sample prep, which means fast field scans

Pair the TerraSpec 4 with The Spectral Geologist (TSG) software from Spectral Geoscience to analyze the spectra and produce mineralogical output products.

Why post-dispersive technology matters

Pre-dispersive systems: Disperse light before reaching the sample, relying on an internal light source.

Post-dispersive systems: Disperse light after reflection, allowing external light sources like the sun to be used.

The post-dispersive system technology used in ASD instruments offers superior analysis capabilities:

Measures reflected energy from external light sources
Adapts to different lighting conditions without internal light dependence
Provides reliable calibration for spectral radiometry

Spectral performance	350-2500 nm
Resolution	3 nm @ 700 nm 6 nm @ 1400/2100 nm
Measurement 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: 10000:1 (0.01%)
Wavelength reproducibility	0.1 nm
Wavelength accuracy	0.5 nm
Channels	2151
Detector	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
Regulatory testing	CE certified: EN61010-1:2001 2nd Edition EU Directive: 2006/95/EC, 2004/108/EC NIST traceable calibration WEEE Compliance
Communication port	Wired: 10/100 Base T Ethernet port with Ethernet cross-over cable Wireless: 802.11g/n wireless card
Dimensions	12.7 x 36.8 x 29.2 cm (5 x 14.5 x 11.5 in)
Weight	5.44 kg (12 lbs) Battery weight 1.2 kg (2.7 lbs)
Battery run time	Approximately 6 hours (without lamps or accessories)
Temperature (operating)	0 - 40 °C (32 - 104 °F)
Storage temperature	-15 to 45 °C (5 to 113 °F)
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)
Software	RS3™ spectral acquisition software, Compatibility with The Spectral Geologist and SpecMin, Seamless interface with ENVI®, ASD ViewSpec™ Pro for post processing, optional Indico® Pro
Warranty	One year full warranty including expert customer support
Computer	Windows® 10 64-bit laptop (instrument controller)

Probes and Lighting

Contact Probe

The ASD Contact Probe is designed for contact measurements of solid raw materials such as minerals, grains, other granular materials. Its innovative optical design minimizes measurement errors associated with stray light and allows for the measurement of samples through clear and transparent plastic bags.

In addition to the standard contact probe, we also offer the Hi-Brite contact probe and the Plant Probe.

All contact probes are available with a ruggedized cable feed and cable, designed for applications that involve extra cold or harsh temperatures.

Length	10" ( 25.4 cm)
Weight	1.5 lbs (.7 kg)
Power requirements	12-18 VDC, 6.5 W
Lightsource type/Life (approx.)	Halogen bulb/1500 hours
Halogen bulb color temperature	2900 K
Spot size	10 mm

Fiber optic illuminator

The Fiber Optic Illuminator is a portable, external light source designed for use with ASD instruments and sampling accessories that do not have a built-in light source.

Length	11.43 cm (4.5 inches)
Width	8.255 cm (3.25 inches)
Weight	292 grams (10.3 ounces)

Muglight

The ASD Muglight is designed for analysis of raw materials requiring reflectance and absorbance measurements. It can measure samples through glass vials, or using the ASD sampling tray adapter. It's unique and innovative design minimizes measurement errors associated with stray light and specular reflected components.

For users requiring higher intensity illumination, ASD also offers the Hi-Brite Muglight.

Size	5.5” x 3.7” (14cm x 9.4cm)
Weight	2.91 lbs (1.3 kg)
Power requirements	Input power 5.5 W, bulb 4 W
Light source (type/life) approx.	Tungsten Quartz Halogen b/1500rs
Bulb color temp	2900 K
Spot size	12 mm

Rapid analysis probe

The Rapid Analysis Probe is specifically designed for speedy spectral collection of powders and other fine-grained materials such as small uniform seeds and grains. Its beveled tip and metal jacket greatly speed up the spectral collection process of fine-grained materials to optimize workflow. Simply insert the Rapid Analysis Probe into your fine-grained media, collect the spectrum, use a chemical wipe to swipe the probe clean and move on to the next sample. It’s that easy! The Rapid Analysis Probe comes with a gimbaled white reference for high-performance calibration. It can be used for quantitative predictive models.

If using this probe with a spectrometer such as a TerraSpec mineral analyzer or a LabSpec lab analyzer without an integrated light source, a Fiber Optic Illuminator is necessary. The Fiber Optic Illuminator provides the light source needed for sample collection.

Technical Specifications

Length: 21.6 cm (8.5 inches)
Spot size: 4 mm

Small diameter reflectance probe

With an approximate spot size of only 2 mm, the Small Diameter Reflectance Probe was designed to collect spectra from individual small materials such as individual grains or vugs in a hand sample or rock core. It’s perfect for determining specific mineralogy of individual grains.

If using a spectrometer such as a TerraSpec mineral analyzer or a LabSpec lab analyzer without an integrated light source, a Fiber Optic Illuminator is required. The Fiber Optic Illuminator provides the necessary light source for sample collection.

Technical Specifications

Length: 10.2 cm (4 inches)
Field of View: 1 mm

Turntable

When your application requires analysis of irregularly shaped or non-homogeneous samples, the ASD Turntable is ideal for obtaining a highly accurate average.

Especially useful for instrument owners in the grain, agriculture, pulp and paper, food, plastics and mining industries.

53.2 mm sampling spot size
Rotates at 22 RPM
Fits up to a 150mm sample dish
Compact (8"x11"x11" or 20.32 cm x 27.94 cm x 27.94 cm) footprint.

The Turntable comes standard with a 4000 hour halogen light source and one standard 150 mm x 15 mm Petri dish.

General

Ergonomic pro-pack backpack

The ASD Ergonomic Pro-Pack Backpack takes field portability to a higher level for FieldSpec, LabSpec, and TerraSpec customers requiring the ultimate in portability.

Constructed of ultra-tough but lightweight material, the Ergonomic Pro-Pack Backpack weighs only 5.5 pounds (2.49 kg). The Pro-Pack Backpack positions the center of mass much closer to the body, and the easily adjustable ‘one size fits all' frame accommodates all body types for superior ergonomics.

Additionally, the Pro-Pack comes standard with:

‘Pull-out' waterproof rain hood built in
Snap-on spool holder for protective storage of the fiber optic cable
Larger storage pockets to hold the notebook controller and accessories
Soft-sided travel case for backpack to aid in easy travel.

Reference Panels

ASD carries a wide array of calibrated and non-calibrated diffuse white and gray reference panels in varying sizes (from 2 x 2 in. to 12 x 12 in. or 5.1 x 5.1 cm to 30.5 cm x 30.5 cm) and reflectance levels, including encapsulated gray scale (NIST/NRC traceable) wavelength and USP standards for USP 1119. Calibrated panels come with certificate and documentation showing standard deviation and reflectance factors.

All reference panels and standards may be purchased separately. To provide our customers with a more cost-effective approach, specific sizes or styles of reference panels are included in accessory bundles designed for maximum compatibility with a particular application.

Your ASD sales representative will be able to advise you on the best option(s) for your needs.

Palm grip

Optional palm grip with bare fiber optic input:

Secures the fiber optic cable during fieldwork
Prevents damage from unexpected tension
Ensures consistent lighting conditions during measurements

Telescopic tubes

A variety of telescopic tubes are available for long-range measurements:

1-degree fore optic: measures distant objects up to 100 feet away
Smaller telescopic tubes: focus on specific areas within 10 feet
Spot Size Matching: ensures accurate data by aligning the instrument field of view with satellite pixel resolution

ASD TerraSpec 4 Hi-Res Mineral Spectrometer

Fast, precise mineral exploration

Overview

Features

Key applications

Made for geologists

Why post-dispersive technology matters

Specification

Accessories

Probes and Lighting

Contact Probe

Fiber optic illuminator

Muglight

Rapid analysis probe

Small diameter reflectance probe

Turntable

General

Ergonomic pro-pack backpack

Reference Panels

Palm grip

Telescopic tubes

User manuals

Software downloads

Support

Services

Solutions to maximize the return on your investment

Support

Expertise

Training and education

Rugged, portable mineral spectrometry.