Hyperspectral data and mineral resources

Supporting smarter exploration and discovery of mineral resources

Australia’s mineral wealth is globally significant, but many prospective deposits are concealed beneath weathered ground, vegetation or large areas that are difficult and costly to survey due to their remoteness.

Hyperspectral data is helping researchers and mineral explorers build a more detailed picture of Australia’s mineral resources through the detection of spectral signatures in surface rocks.

Used alongside geological maps, geophysical surveys, geochemistry and on-ground sampling, it can support faster, more efficient and targeted mineral exploration.

Targeting the right rocks

Different minerals reflect and absorb light in distinct ways according to their crystal structure and chemical composition. Hyperspectral sensors can detect these light absorption features - or spectral signatures - across broad areas, helping geologists identify surface minerals associated with geological processes that may form or alter an ore deposit.

Combining these observations with other datasets is helping geologists map:

• rocks in remote terrains, improving and verifying previous data
• alteration zones, where heat and fluids have changed the surrounding rocks
• mineral assemblages that provide clues about geological history and the conditions in which the minerals were formed, and
• surface indicators that may point to prospective geology or potential ore deposits.

Hyperspectral data can also be used to update existing maps from older geological surveys.

While hyperspectral data does not replace field work, it can narrow large search areas into priority targets. Hyperspectral mapping gives that birds eye view that would take a geologist days-weeks-months to walk over

The advantage for mineral explorers lies in mapping, sampling and drilling more precisely, reducing time and cost while limiting unnecessary ground disturbance during the earliest and highest-risk stages of exploration.

Monitoring mining impacts and rehabilitation

Hyperspectral data also has value after a resource has been identified. Because it can distinguish exposed soils, dust, vegetation condition and some mineral compositions, repeat observations can help operators and regulators track how mine sites and surrounding landscapes change over time.

When combined with field measurements and other satellite imagery, it can help monitor changes in mine footprints, infrastructure and disturbed land.

It can be used in understanding and managing tailings and waste-rock characteristics, including surface mineral changes that may indicate emerging environmental risks.

The data can also be useful in tracking mine rehabilitation progress, such as vegetation establishment, ground cover and differences between rehabilitated and reference areas.

Scale is also an advantage. These observations can provide a consistent regional view and highlight areas that may need closer inspection.

Supporting smarter exploration and discovery of mineral resources

Australia’s mineral wealth is globally significant, but many prospective deposits are concealed beneath weathered ground, vegetation or large areas that are difficult and costly to survey due to their remoteness.

Hyperspectral data is helping researchers and mineral explorers build a more detailed picture of Australia’s mineral resources through the detection of spectral signatures in surface rocks.

Used alongside geological maps, geophysical surveys, geochemistry and on-ground sampling, it can support faster, more efficient and targeted mineral exploration.

Targeting the right rocks

Different minerals reflect and absorb light in distinct ways according to their crystal structure and chemical composition. Hyperspectral sensors can detect these light absorption features - or spectral signatures - across broad areas, helping geologists identify surface minerals associated with geological processes that may form or alter an ore deposit.

Combining these observations with other datasets is helping geologists map:

• rocks in remote terrains, improving and verifying previous data
• alteration zones, where heat and fluids have changed the surrounding rocks
• mineral assemblages that provide clues about geological history and the conditions in which the minerals were formed, and
• surface indicators that may point to prospective geology or potential ore deposits.

Hyperspectral data can also be used to update existing maps from older geological surveys.

While hyperspectral data does not replace field work, it can narrow large search areas into priority targets. Hyperspectral mapping gives that birds eye view that would take a geologist days-weeks-months to walk over

The advantage for mineral explorers lies in mapping, sampling and drilling more precisely, reducing time and cost while limiting unnecessary ground disturbance during the earliest and highest-risk stages of exploration.

Monitoring mining impacts and rehabilitation

Hyperspectral data also has value after a resource has been identified. Because it can distinguish exposed soils, dust, vegetation condition and some mineral compositions, repeat observations can help operators and regulators track how mine sites and surrounding landscapes change over time.

When combined with field measurements and other satellite imagery, it can help monitor changes in mine footprints, infrastructure and disturbed land.

It can be used in understanding and managing tailings and waste-rock characteristics, including surface mineral changes that may indicate emerging environmental risks.

The data can also be useful in tracking mine rehabilitation progress, such as vegetation establishment, ground cover and differences between rehabilitated and reference areas.

Scale is also an advantage. These observations can provide a consistent regional view and highlight areas that may need closer inspection.