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

Yooperlites are rocks that fluoresce in the dark under ultraviolet light ... Sodalite forms in igneous rocks that crystallized from sodium-rich, silica-poor magmas. That’s how it got its ...

While Skull Hill’s dark hue resembles meteorites previously found in Gale Crater by NASA’s Curiosity ... Instead, scientists believe it may be an igneous rock formed from cooled magma or lava, rich in ...

The dark colour of Skull Hill resembles meteorites previously discovered by Nasa’s Curiosity rover in Gale Crater, which contained iron and nickel. However, recent chemical analyses by Perseverance’s ...

"On Earth and Mars, iron and magnesium are some of the main contributors to igneous rocks, which form from the cooling of magma or lava. These rocks can include dark-colored minerals such as ...

Unlike the surrounding pale, weathered terrain, Skull Hill is a dark-toned ... the iron-heavy space rocks previously found. Another possibility is that the rock is igneous and formed from volcanic ...

“Alternatively, ‘Skull Hill’ could be an igneous rock eroded from a nearby outcrop or ejected from an impact crater,” NASA scientists note. The rock’s composition may hold the answer. Dark igneous ...

On Earth and Mars, iron and magnesium are some of the main contributors to igneous rocks, which form from the cooling of magma or lava. These rocks can include dark-colored minerals such as olivine, ...

The best explanation so far seems to be that the mysterious stone is an igneous rock, which likely formed as molten lava or magma cooled long ago in the Red Planet’s history. Such volcanic stones are ...

We highlight Earth’s three main rock types, how they are formed and their common engineering uses.

This process normally requires a human expert to examine a sample the rocks. In this research, we employ machine learning algorithm, called Fuzzy Soft Set Classifier (FSSC) to classify igneous rock ...