Brucite

The valley's also rich in brucite, and there's at least some gold. ❋ Susan Palwick (2008)

The silicate and brucite layers share oxygen atoms which would normally be separated by distances of 0.305 nm in the silicate layer and 0.342 nm in the brucite layer. ❋ Unknown (2007)

Free brucite, present as contaminant in the fibers, also contributes to the pH increase. ❋ Unknown (2007)

In the case of chrysotile, an octahedral brucite layer having the formula (Mg6O4 (OH) 4) -4 is intercalated between each silicate tetrahedra sheet. ❋ Unknown (2007)

In the case of chrysotile, the crystalline structure is stable up to approximately 550° C (depending on the heating period), where the dehydroxylation of the brucite layer begins. ❋ Unknown (2007)

In the octahedral layer (brucite), magnesium can be substituted by several divalent ions, Fe+2, Mn +2, or Ni+2. ❋ Unknown (2007)

In the case of chrysotile fibers (in a given amount of water), the brucite layer will, fairly rapidly, dissolve in part, with concomitant increase in the pH of the solution. ❋ Unknown (2007)

In contact with solutions of mineral acids, organic acids, or magnesium complexing agents, the rate of dissolution of the brucite layers is increased. ❋ Unknown (2007)

A native magnesia of New Jersey, it was named after him: “brucite.” ❋ James Burke (2007)

It dissolves in acid readily with but little effervescence, which little, however, distinguishes it from brucite, which it sometimes resembles and which has a much lower-specific gravity when pure. ❋ Various (N/A)

It is packed in masses resembling the brucite, from which it only differs in breaking into fibers instead of plates, as I have explained in my description of that species (see Part II). ❋ Various (N/A)

Magnesia, the oxide of magnesium (MgO) occurs in nature in the rare mineral periclase (MgO); and hydrated, as brucite (MgH_ {2} O_ {2}). ❋ Cornelius Beringer (1886)

These mineral contaminants comprise: brucite (Mg (OH) 2), magnetite (Fe3O4), calcite (CaCO3), dolomite ((Mg, Ca) (CO3) 2), chlorite ((Mg, Al, Fe) 12Si8O20 (OH) 16), and talc (Mg6Si8O20 (OH) 4). ❋ Unknown (2007)

The specimens of nemalite may be more readily obtained than the brucite but fine specimens of both may be obtained after finding a vein of it, by cutting away the rock, which is not hard to do, as it is in layers and masses packed together, and which maybe wedged out in large masses at a time with the cold chisel and hammer, perhaps at the rate of three or four cubic feet an hour for the first hour, and in rapidly decreasing rate as progress is made toward the unweathered rock and untouched brucite, etc. ❋ Various (N/A)