For over half a century, Glenwood Springs’ High Country Gems and Minerals, affectionately known as “The Rock Shop,” has drawn ...

For the second time in about five years, North Carolina Granite Corp. has changed hands, with plans this time around calling ...

Beneath Earth s surface, nearly 3,000 kilometers down, lies a mysterious layer where seismic waves speed up inexplicably. For ...

The Cambrian-age Tonto Group is a set of rocks famous for holding clues to the burst of new life that reshaped Earth 500 ...

Yooperlites can be found as loose pebbles and cobbles along many Lake Superior beaches and even in some inland gravel pits.

An ancient granite pebble included indentations resembling a face, its nose a red dot. A study says it may have had symbolic ...

Stuck deciding between granite and marble for your new kitchen countertops? We asked some experts for their insight on picking the best option.

Smithsonian researchers trekked to a remote site in northern Canada to collect four-billion-year-old rock samples that could ...

Pluton is a Cal-alkaline granite ... crystal fractionation. The Pattern of REEs normalized to the primitive mantle shows a pronounced negative Eu anomaly, reflecting the crystallization process and ...

The Morrinhos Granite ... HBTF rocks, and it shows a partial alteration into chlorite, muscovite (Fig. 4D) and opaque minerals. Biotite occasionally includes rutile needles characterizing a sagenitic ...