What’s the best band ratio for detecting gold deposits?

ASTER B4/B6 for clays (kaolinite, illite)—prime Au indicator via alteration halos.

How do multispectral and hyperspectral remote sensing differ for minerals?

Multispectral uses ~10 broad bands for ratios/indices on halos; hyperspectral's 100+ narrow bands enable direct mineral mapping via pure spectra.

Can you detect lithium directly with satellite imagery ?

Not straight-up—target mica shifts ~2200 nm or associated clays in pegmatites.

🤖 AI Dev Tools

Satellite Ghost Hunters: Spotting Gold Veins and Copper Lodes from 500 Miles Up

A Landsat satellite slices through clouds over Nevada, its sensors igniting pixel fireworks: red screams iron oxide, green whispers clays hugging gold. This is mineral hunting reborn.

theAIcatchup Apr 08, 2026 4 min read

Satellite view of Australian outback with spectral overlays highlighting iron oxide and clay alteration zones for mineral detection

⚡ Key Takeaways

Band ratios like B4/B2 on Landsat flag iron oxides capping ore zones instantly. 𝕏
Hyperspectral unlocks pixel-level mineral mixes, predicting proportions like 30% quartz. 𝕏
Focus alteration halos over metals—clays, carbonates scream where Au, Cu hide. 𝕏

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#ASTER Landsat #geospatial AI #hyperspectral imaging #mineral exploration #multispectral remote sensing #remote sensing #satellite band ratios #satellite imagery

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Originally reported by dev.to

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