Found all over the world, calcite is the most stable form of calcium carbonate and is the main mineral found in limestone. We find calcite in the ocean, in shells or hard parts of marine organisms ...

Isotope analysis of limestone cave deposits indicates repeated humid periods in the Saharo-Arabian Desert over the past eight ...

These are stalagmites and stalactites. They are also the result of water seeping through limestone, which is made of calcium carbonate. The calcium carbonate is dissolved in the water as it seeps ...

a band of limestone in south-central Indiana. This geological richness stretches back at least 345 million years, when the tropical waters of a warm inland sea ground up the remains of calcite ...

Mineral deposits in limestone caves show that the now arid interior of Saudi Arabia repeatedly experienced increased rainfall ...