Perseverance's drives over the last few weeks have doubled back several times. Why such an unconventional route? Team ...

Rocks are categorized into three main types: igneous, sedimentary ... The most common rock-forming minerals include quartz, feldspar, mica, amphibole, olivine, and calcite. Some rocks are ...

Igneous rocks form from the solidification of molten ... it carries dissolved minerals like silica, quartz, and feldspar. When the conditions are just right, these minerals begin to precipitate ...