NASA’s GEMx Mission: Mapping Minerals in the American Southwest

In late August 2025, pilot Kurt Stallings sat at Edwards Air Force Base in California, ready to take off in NASA’s ER-2 aircraft on a geographic mission aimed at mapping minerals in the arid and semi-arid regions of the southwestern United States. This mission, known as the Geological Earth Mapping Experiment (GEMx), is a joint collaboration between NASA and the United States Geological Survey.

Objectives of the GEMx Mission

The GEMx mission focuses on mapping mineral-rich areas such as cobalt and lithium in states like California, Nevada, Arizona, and New Mexico. These minerals are of vital importance to the technology industry, especially in the manufacturing of batteries and electronic devices. Through this mission, NASA and the US Geological Survey aim to provide accurate data to assist in mineral exploration decisions.

The ER-2 Aircraft: An Advanced Exploration Tool

The ER-2 aircraft, the civilian version of the Lockheed Martin U-2 reconnaissance plane, is a critical asset in the GEMx mission. This aircraft is capable of flying at altitudes above 99% of Earth’s atmosphere, allowing it to carry advanced sensors that operate in visible, infrared, and thermal spectrums. This high-altitude capability reduces interference and increases measurement accuracy.

The ER-2 relies on high spectral precision, enabling it to identify potential mineral locations based on how rocks and minerals absorb and reflect light in different spectra. This technique is crucial in determining the quality and geography of targeted minerals.

Challenges and Economic and Environmental Benefits

The GEMx mission faces several challenges, including dealing with harsh weather conditions in arid and semi-arid regions. However, the potential benefits of this mission far outweigh the obstacles, as it could enhance economic security by improving the supply chain of rare minerals.

The data collected from this mission is essential in guiding mineral exploration strategies and reducing the environmental impacts of mining operations. It can also help assess changes in the Earth’s surface amid ongoing climate change, enhancing scientific understanding of factors affecting global geology.

Conclusion

The GEMx mission demonstrates how technology and innovation can play a crucial role in addressing global challenges related to natural resources. By using advanced aircraft like the ER-2, this mission offers a model of inter-agency cooperation to enhance scientific knowledge and improve economic and environmental sustainability. Thanks to these efforts, we can anticipate a safer and more sustainable future for the natural resources that many vital industries depend on.