Geoscientists had long thought that below this transition zone (starting at 255 miles, or 410 km, deep) a water-filled mineral called brucite was unstable and so decomposed, sending water ...

The ferropericlase exhibits exsolution of magnesioferrite, which places the origin of this assemblage in the uppermost part of the lower mantle. The presence of brucite–Mg(OH)2 precipitates in the ...

"We had a very successful first year of exploration at SAM with sampling results showing high brucite grades over a large area, exceeding our initial expectations," said Company President Cooper ...