I LOVE unexpected finds! I went out searching for 40 million year old fossil sea urchins and sand dollars, and I ended up ...

One of the most interesting rocks, though, may be chert or flint, which looks like blackish gray nodules sticking out of the ...

And then in 1911 is when the limestone quarry was really started. And then commercial operations began in 1912. - [Adam] Located just outside of town. The Carmeuse Calcite Operation, commonly ...

The amazing part, however, is that the teeth, which need to be harder and stronger than the rocky limestone being dug out, are themselves made almost entirely of calcite – the same calcite that ...

Limestone contains calcite (calcium carbonate) as its primary mineral. You may place a drop of vinegar or muriatic acid on limestone and watch it fizz. Dolomite contains two minerals ...

When water containing dissolved limestone falls to the floor of a cave some of the calcite precipitates out. This build up of deposits forms a mound growing up from the floor. (StalaGmites are on ...

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 ...

They convert the calcium lactate to calcite, an ingredient in limestone, thus sealing off the cracks. This innovation could solve a longstanding problem with concrete, the world’s most common ...