Plate Nº 34 · recorded November 12, 2026
Space & AstronomyReported finding
CSIRO's New Satellite Map Reads 200+ Light Bands to Find Australia's Ore
CSIRO's new hyperspectral map reads 200+ light bands from three satellites to chart Australia's surface minerals — and you can download it free.
By Nathan Brooks3 min read637 words
In brief
- The new map reads more than 200 spectral bands, up from 14 in earlier satellite systems.
- CSIRO combined data from three missions: Italy's PRISMA, Germany's EnMAP and NASA's EMIT.
- The team processed hundreds of terabytes of data, handling cloud cover and quality issues.
- The first map layer shows aluminum sheet silicate abundance across Australia.
- The data is free to download via CSIRO's XT Portal.
Australia's national science agency CSIRO has unveiled a continent-wide mineral map built from satellites that read more than 200 narrow bands of reflected light — a 14-fold jump from the 14 bands older satellites could capture.
The tool, released as a hyperspectral map, shows the mineral makeup of Australia's land surface across the entire continent. Explorers can use it to pinpoint areas that may hold rich mineral deposits, including the critical minerals Australia wants for clean energy technologies, advanced manufacturing and national resilience.
And anyone can look: the map layer is free to download and view through CSIRO's XT Portal.
How does a satellite "see" minerals?
Every mineral on the ground reflects sunlight in its own faint fingerprint across colors, including ones the human eye can't see. A hyperspectral sensor splits that reflected light into more than 200 narrow spectral bands — narrow slices of the spectrum — instead of the 14 broad bands that previous satellites recorded.
The result, in effect, is a chemical map of the surface. Where older instruments saw general color categories, the new system can distinguish specific mineral signatures across all of Australia.
CSIRO research director Dr. Sandra Occhipinti put it in musical terms. The new capability, she said, is like the difference between listening to 14 notes on a piano and hearing a full orchestra.
What changed to make this possible?
Until now, this level of mineral detail could only come from fieldwork and laboratory measurements, which only work at small scale. "Remote sensing from satellites opens up our view to the full continent," Occhipinti said.
CSIRO built automated workflows that combine imagery from three satellite missions: Italy's PRISMA, Germany's EnMAP and NASA's EMIT. The team processed hundreds of terabytes of data to stitch the views together — hundreds of millions of pages of text, for a sense of scale — while tackling practical headaches such as cloud cover and uneven data quality.
The output is a single, continent-wide mineral data set that no individual mission could produce alone.
What does the first map show?
One of the first products maps the abundance of aluminum sheet silicate minerals across Australia. These are clay-like minerals whose distribution reveals a new mineralogical layer of the continent.
That layer matters because it can expose signatures from Australia's bedrock — the deep rock beneath the soil — tied to mineral footprints around ore deposits. In plain terms, the surface can hint at what lies below.
"This can help explorers target prospective areas more effectively, reducing time, cost and risk in the search for new mineral resources," Occhipinti said.
Is it only about mining?
No. The same mineral-sensing detail can serve other sectors too.
"The technology is so advanced, it has wider applications for agriculture and environmental monitoring," Occhipinti said. Soil and vegetation properties, which also leave spectral fingerprints, fall within the method's reach.
The mapping program sits inside CSIRO's ongoing Earth observation research, which focuses on turning satellite data into practical geoscience information for the mineral resources sector and beyond.
"By transforming advanced satellite imagery into practical geoscience products, we are helping unlock Australia's resource potential while supporting more informed environmental and land management decisions," Occhipinti added.
What are the caveats?
The maps show surface mineralogy — the top layer of the land — not buried ore bodies directly. They guide explorers toward prospective ground rather than replacing drilling or on-site sampling. Cloud cover and data quality also shaped what the team could combine cleanly, which is why the automated processing pipelines were necessary in the first place.
Still, the shift from 14 bands to more than 200 turns a coarse view into something approaching a laboratory-grade scan of an entire continent — one that's now free for anyone to explore through CSIRO's XT Portal.
via phys.org/rss-feed/ (Source)
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Market editor covering companies, deals and strategy in general science news at SciBeat.
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