Quartzite would be highly resistant to chemical weathering because it's quartz. And because it lacks a lot of space for water to sneak in, very resistant to physical weathering as well. Make your ...

Piedmont Lithium Ltd (ASX:PLL) has revealed a resource estimate for by-products (quartz, feldspar and mica) from the spodumene bearing pegmatite at its Piedmont Lithium Project in North Carolina, U.S.

With pegmatite veins exposed at surface, lithium pathfinder minerals in both rock and stream sediment samples, and lab results on the way, Spark is hitting all the right exploration milestones. The ...

On the small moon plate tectonics never happened. The early crust, composed of light feldspar rocks, was preserved, still providing today insights on the early history of earth.

Geologist Alex Glover, of Active Minerals International, drove me to a disused mine to see this quartz for myself. Our jeep bumped across dried creek beds for miles until we reached two cathedral-like ...

See an array of colors, shapes and textures at The Academy of Natural Sciences of Drexel University's exhibit of stones from its mineral vault. The collection dates back to 1812 and contains ...