A new atlas charts the global distribution of unusual, critical-metal-bearing igneous rocks, finding that they often form ...

Igneous rock (derived from the Latin word ignis meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the ...

Luke, age 4, New Market, New Hampshire While many rocks don’t burn, some of them do. It depends on what the rocks are made of ...