SAPPHIRINE is a principal constituent of certain high grade silica-deficient metamorphic rocks at Fiskenaesset, West Greenland, where it occurs with cordierite, corundum, anorthite and biotite. A ...

Scientists agreed the rocky outcrops in a remote part of Quebec, Canada, were ancient. But were they really Earth’s oldest?

Weak rock structure was the primary cause of the landslide that occurred on Monday in Zhenxiong county, Yunnan province, resulting in at least 34 deaths, a preliminary investigation revealed on ...

Metamorphic rocks close metamorphic rock Metamorphic rocks are those rocks which have been changed from an earlier state through the addition of pressure or heat.s. have been subjected to ...

In this case, it’s a piece of schist, a type of metamorphic rock made of easily identified grains or flakes. Its presence often marks places where continents collided millions of years ago. “Sometimes ...

Limestone, for example, is a sedimentary rock made exclusively of the mineral calcite (CaCO3). Glacier ice too, is a type of rock composed of crystals of water .

A new rock structure comprising stone slabs, believed to be belonging to the 11 th century, surfaced very close to the Chandragiri Fort, one of the three capitals of the erstwhile Vijayanagara ...