The most efficient separation techniques operate on monomineralic
particles obtained after crushing and grinding, but obviously this ideal situation can hardly be achieved and most often multiphasic or so-called unliberated particles are present in the process.
2005) suggested that the quartz-rich nature of the sandstone is the result of a monomineralic
source area rather than a unique environment of deposition.
The highest grade, nearly monomineralic brucite deposits are found in aureoles where the protolith consists of magnesite with little or no calcite, clays, chert or other mineral impurities.
Dolostones have lower magnesium content than magnesite-rich rocks so they are less likely to host nearly monomineralic brucite deposits.
Although the thermal conductivity in monomineralic
systems is mainly controlled by porosity and the thermal conductivity of pore fluid, the exact mathematical function between these two parameters is not self-evident due to variations in pore structure, microfracturing, and degree of saturation.
Careful extraction of minerals helped increase the recovery of monomineralic
samples and a microscope was employed to ensure purity of the mineral extracts.