They used volcanic ash from Taal as an aluminosilicate, a mineral compound made of aluminum and silicate commonly known as feldspar. The volcanic ash was obtained from Taal Volcano in Batangas ...

Volcanic ash, often seen as a dangerous waste after eruptions, may have a surprising new purpose—shielding people from ...

Blocks of geopolymer mortar made from Taal volcanic ash (TVA) freshly removed from their molds after being left to cure for 24 hours. It was found that the natural presence of iron-rich minerals in ...

One of the last things you'd think could be lost is a volcano ... a mineral formed by the evaporation of water that is rich in sulfur. So, without a better source, that was the guess. Compositional ...

The mineral composition of the solutions ... Look for rounded, nodule-like formations embedded in the volcanic ash or soil. Carefully extract them from the surrounding material, taking care ...