Surface Area of Primary Silicate Minerals

Natural Weathering Rates of Silicate Minerals

“…In spite of the above issues, consistent trends of increasing surface area with increasing intensity of natural weathering have been established (Brantley et al, 1997). An example of this is shown in Figure 19(a) in which BET surfaces for primary minerals increase with increasing time in the Merced chronosequence (White et al, 1996).…”

How do mineral coatings affect dissolution rates? An experimental study of coupled CaCO3 dissolution—CdCO3 precipitation

“…They observed that Cd uptake is much greater on aragonite than calcite, and attributed this difference to the different uptake mechanisms of these surfaces. The effect of mineral coatings on the dissolution rates of the underlying mineral has been debated in the literature (Nicholson et al, 1990;Hodson et al, 1998;Nugent et al, 1998;Brantley et al, 1999;Zhu et al, 2001;Oelkers, 2002;Hodson, 2003;Zhu et al, 2004). The effect of such coatings is unclear.…”

High-pressure synthesis of mesoporous stishovite: potential applications in mineral physics

“…However, mesoporosity has been also observed in common natural silicates and is thought to form by alteration, i.e., weathering, or during crystallization. For instance, minerals such as quartz, plagioclase or feldspar were found to have pore size distribution within the micro-/mesoporosity range (Brantley et al 1999(Brantley et al , 2000Montgomery and Brace 1975) determined by N 2 adsorption measurements. Since the surface area is an important variable to quantify the mineral-fluid (water) interaction and affect the crossover in polymorphs (meta) stability, mesoporous crystalline silica can provide a better understanding of these processes as analogue of porous rocks.…”