Melanterite was detected in Neyveli, Tamil Nadu.
Gypsum was detected in the Atacama Desert and the Badlands of Tamil Nadu.
Both minerals are types of hydrous sulphates that need water.
The laser Raman spectrometer reads the mineral’s light pattern.
The study helps understand where ancient life could have existed on Mars.
They discovered two minerals, melanterite and gypsum, that are also present on Mars.
These minerals form when water interacts with rocks, showing past water activity.
The team used a laser Raman spectrometer, which shines light to identify minerals.
Finding Earth places similar to Mars helps scientists plan future space missions.
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