Pegmatites are coarse-grained igneous rocks containing large crystals at least 1 centimeter in diameter. Composed of feldspar, mica and quartz, pegmatites are formed by the final stages of the ...

The Worcester area has evidence of the Mesoproterozoic Era, going back to the earliest known days of the present-day Earth's ...

On Tuesday, water treatment and resource recovery firm Gradiant announced that its wholly owned lithium-focused subsidiary, Alkali, will design and construct a commercial lithium production plant in ...

The Huachuca Mountains in Cochise County, notably the Hartford Mining District, was mined for tungsten found in skarns (metamorphic rock), veins or pegmatites (igneous rock).

Ancient rocks could shed light on Earth's earliest days Earth formed about 4.5 billion years ago from a collapsing cloud of dust and gas soon after the solar system existed.

Gray rocks uncovered in northern Nunavik, Quebec, Canada may be the ultimate primordial find. The stones date back 4.16 billion years to the Hadean era and are the oldest known rocks on the planet.

In 2008, Canadian researchers said they'd found the world's oldest rocks in northern Quebec. The find was controversial. But after more than a decade of hard work, they believe they've really ...

A new study has pinpointed what could be the oldest rocks on Earth, found within a remote Canadian rock formation, offering fresh insights into our planet's earliest history.

China’s biggest gold and copper producer Zijin Mining said on Monday it had agreed to buy one of the largest gold mines of Kazakhstan, the Raygorodok gold mine, for $1.2 billion.

The Shaakichiuwaanaan Mineral Resource5, which includes the CV5 & CV13 spodumene pegmatites, totals 108.0 Mt at 1.40% Li2O, 166 ppm Ta2O5, and 66 ppm Ga, Indicated, and 33.3 Mt at 1.33% Li2O, 156 ppm ...