• Excellent Performance: Low Noise/High Sensitivity, best in the industry – 0.008nT/Hz RMS – and world wide operation
• Very Fast – Log mag and GPS at up to 5 samples per second for economic large area surveys at high sample density
• Integrated GPS/Backpack – Includes non-magnetic backpack and Novatel™ WAAS / EGNOS ready GPS
• Low AC Field Interference – Best in the industry for rejecting AC power line grid noise (50/60 Hz)
• Easy-to-use – Simple setup and rapid in-field map generation with free MagMap2000™ software
• Reliability – Our Cesium sensors never need calibration or factory realignment. Designed for extreme ruggedness and reliability.
• Designed for large surveys mining/oil/gas – This versatile tool is specially designed for large area surveys with 8 hr data storage capacity and two 6 hr battery packs

This new low-cost Cesium vapor magnetometer system offers the mining/oil/gas survey companies the best total field magnetic survey tool available. Based on our industry standard G-858 MagMapper system , the G-859 incorporates all of the reliability and proven performance in a lightweight survey package with integrated WAAS/EGNOS enabled Novatel™ GPS.

• Operation
• Integrated GPS
• Data Sheet
• Manual
• Specifications
• Application Description

Most magnetic surveys for minerals, oil, and natural gas are initially conducted as airborne surveys. 
       The map abovet shows an area of approximately 1.5Km by 1.5Km and was produced from data collected from an airborne survey. The aircraft height was 70m and the line spacing 120m. The sample interval was 0.2s or approximately 14m with a grid cell size of 20m.

Operation
The G−859 Mining Mag uses a graphical interface to make survey design and data acquisition quick and efficient. A "Simple" or "Mapped" Mode uses line numbers and known staked reference points to define the map parameters. Or the user may use the integrated Novatel Smart Antenna™ GPS for mapping positions automatically. Position information may come from an external GPS, from regularly spaced fiducial marks input by the operator or both. At any time, the user may switch to "profile" mode to observe the last 5 data lines as stacked profiles. 

Data is collected in up to 5 separate survey files and transferred via high speed RS−232 data link (or USB with converter) to a computer for further analysis and map generation. The full featured graphical data editing program MagMap2000 is provided to allow repositioning, realignment, GPS smoothing, data filtering and interpolation of the data. After editing, the data is formatted in either Surfer for Windows or Geosoft formats for further plotting and analysis.

Speed and Efficiency
G−859 data acquisition offers either continuous (automatic) or discrete station recording. Data quality is uniformly high and lower costs are inherent for most projects due to the high sampling rate of the instrument in continuous mode. This allows the operator to survey an area at a fast pace, covering as much as 10 times more area in a given time period than other magnetometers.  

Reliable, rugged and cost effective
In addition to its speed and sensitivity, the G-859 is also reliable, economical, and easy to use.  Electrical connectors on the G-859's sensor have been eliminated in order to increase reliability and reduce setup time. The G-859's internal firmware has been streamlined to include those features important for mining exploration. We are so confident in the improved design of the G−859 that it comes with 2 Year Warranty.

The map on the right is was obtained from a ground survey of the same 1.5Km by 1.5Km area as shown above but this data was acquired using a portable cesium magnetometer with its backpack-mounted sensor positioned at a height of 3 m. The line spacing was 20m and the sample interval 1m. The grid cell size is 5m.
      The land data offers significantly greater anomaly definition and improved resolution compared to the airborne presentation.  Individual structures such as lithologic contacts, drainage channels, and alteration zones are evident. In addition, the land data reveals a NW-SE trending structural grain not seen in the airborne data. This detailed information can be used to focus geologic mapping, sampling, and drilling programs for greater efficiency. Most importantly, these high resolution land based data also provide the basis for high resolution numerical interpretation that will better reveal the subsurface structures.
This data was collected in the Goonumbla region of Australia, provided courtesy of North Exploration.