Such discoveries suggest water once flowed beneath Mars' surface. On Earth, sulfate minerals can preserve microscopic fossils of microbes. Finding similar structures on Mars could indicate past life.

They chose gypsum samples from the Sidi Boutbal quarry in Algeria, a region rich in sulfate minerals that formed during the Messinian Salinity Crisis when the Mediterranean Sea partially dried up.

Sulfates, where sulfur and oxygen bind with a cation, are also common; the gypsum used to make drywall boards and PVC pipes is calcium sulfate, for example.

The brilliant blue Chalcanthite is a hydrated water-soluble copper sulfate. The mineral is used to ore copper, however it's necessary to keep the environment dry as the mineral can easily dissolve ...

When water evaporates, it leaves behind sulfate minerals that had been dissolved in the water — a simple school experiment of boiling away rain water reveals this.

Ancient microbial life on Mars could have left evidence of its existence trapped inside iron-rich minerals exposed to acidic water.

A number of junior producers are looking to develop Sulfate of Potash (SOP) or Sulfate of Potash Magnesium (SOPM) projects.

When water evaporates, it leaves behind sulfate minerals that had been dissolved in the water — a simple school experiment of boiling away rain water reveals this.

When it comes to hunting for evidence of ancient life on Mars, some key features that scientists want to explore are areas with high levels of sulfate minerals. These salts form in the presence of ...

At these sites, rover instruments discovered significant sulfate deposits. Researchers found sulfate minerals not just scattered through the rock but concentrated in distinct veins and cavities.