oreXpress
Spectral Evolution – NIR
Identify minerals in the field
The oreXpress™ spectrometer brings the capabilities of a full-range NIR instrument directly to field geologists. It streamlines mineral identification, making the process quicker and more reliable.
Beyond on-site measurements, the oreXpress is also well suited for detailed core-shack logging. In one documented case, using the oreXpress reduced core logging time dramatically—from six hours down to just two.
The oreXpress™ delivers fast, dependable mineral identification and analysis with the resolution professionals expect. It’s a proven, durable spectrometer trusted by hundreds of geologists around the world.
Available Accessory:


Specifications
Spectral Range | 350-2500nm |
Spectral Resolution | 2.8nm (350-1000nm) 8nm@1500nm 6nm@2100nm |
Spectral Sampling Bandwidth (nm) | Data output reported in 1nm increments 2151 channels reported |
Si Detector(s) | 512 element Si Array (350-1000nm) |
InGaAs Detectors (TE-cooled) | 256 element extended wavelength array (1000-1900nm) 256 element extended wavelength array (1900-2500nm) |
Dimensions (in/mm) | 8.5in x 12in x 3.5in 215mm x 305mm x 89mm |
Weight (lbs/kg) | 7.3lbs (3.3kg) |
Communications Interface | USB, Wireless Connection |
Minimum Scan Speed | 100 milliseconds |
Wavelength Reproducibility (nm) | 0.1nm |
Wavelength Accuracy (nm) | ±0.5 bandwidth |
Battery | External Lithium Ion | 7.4V |
Battery Operation | Minimum 5 hour operation |
Key Applications for oreXpress
Mapping alteration zones / Vectoring to mineralization / Open-pit mapping / Analyzing outcrops, hand samples, and RC chips / Quickly analyzing drill core samples / Soil degradation, mapping, & monitoring
Speak to PAS for expert guidance about the Spectral Evolution oreXpress.
oreXpress features:
- 350-2500 nm spectral range
- 100% diode array optics with no moving parts
- Removable/replaceable fiber optic cable
- Rugged anodized aluminum construction
- Auto exposure & auto dark shutter
- Wireless connectivity
- High signal-to-noise ratio for better reflectance values
- Fast start-up and use, with no optimization step to start scanning or between scans
- Collect target data with a single click
- Lightweight lithium-ion battery for power in the field
