Aragonite formation through precipitation of calcium carbonate monohydrate
References (10)
- et al.
Geochim. Cosmochim. Acta
(1973) Bull. Chem. Soc. Japan
(1962)- et al.
Phil. Trans. Roy. Soc. London
(1950) Science
(1969)- et al.
Nature
(1970)
Cited by (48)
The role of microbial sulfate reduction in calcium carbonate polymorph selection
2018, Geochimica et Cosmochimica ActaCitation Excerpt :To constrain the behaviour of these transient intermediate polymorphs, laboratory studies have been performed under both dry and wet conditions (Marschner, 1969; Hull and Turnbull, 1973; Kamiya et al., 1977; Dejehet et al., 1999; Liu et al., 2013). MHC has been reported to transform to aragonite in a heated atmosphere (Brooks et al., 1950; Kamiya et al., 1977), to calcite in a magnesium-free medium (Taylor, 1975) and to aragonite in media with Mg2+/(Ca2+ + Mg2+) greater than 20 mol% (Munemoto and Fukushi, 2008). Although these inorganic and abiotic studies have highlighted several variables that can influence calcium carbonate mineralisation and polymorphism, microbial systems involve a number of interconnected processes that may affect carbonate mineralization in unanticipated ways.
Synthesis of unexplored aminophosphonic acid and evaluation as scale inhibitor for industrial water applications
2018, Journal of Water Process EngineeringCitation Excerpt :Crystals formed in the presence of the inhibitor are mainly in the form of aragonite with some vaterite at higher inhibitor concentration, whereas crystals obtained without a scale inhibitor are predominantly calcite. The aragonite crystals are needles [45,46] and flower like structures [47,48], while the calcite crystals are blocks, like cubic shaped particles or rhombohedral [49]. It is also possible to note the transitional forms of crystals and their defectiveness.
Speciation of magnesium in monohydrocalcite: XANES, ab initio and geochemical modeling
2017, Geochimica et Cosmochimica ActaCitation Excerpt :The formed MHC must transform to stable calcium carbonates with time under early depositional diagenetic process. The laboratory studies suggest that MHC usually transforms to aragonite (Kamiya et al., 1977; Munemoto and Fukushi, 2008; Fukushi et al., 2016). Six-fold Mg2+ cannot be accommodated into aragonite structure (Kawano et al., 2015).
The role of Mg in the crystallization of monohydrocalcite
2014, Geochimica et Cosmochimica ActaCitation Excerpt :The instability of monohydrocalcite with respect to calcite and aragonite explains the relatively low abundance of this phase within modern environmental systems and the geological record. The mechanism of monohydrocalcite crystallization in many systems is unknown, but some studies indicate that it can form from an amorphous precursor (Kamiya et al., 1977; Loste et al., 2003; Fukushi et al., 2011; Nishiyama et al., 2013). Such a crystallization pathway has been shown to be common for many Ca–Mg carbonates (e.g., vaterite, aragonite, dolomite; Bots et al., 2012; Rodriguez-Blanco et al., 2012, 2009; Sand et al., 2012; Ihli et al., 2012), and other carbonate and phosphate systems (Roncal-Herrero et al., 2009, 2011; Vallina et al., 2013), but this amorphous to crystalline transition is not ubiquitous (Van Driessche et al., 2012).
Formation condition of monohydrocalcite from CaCl<inf>2</inf>-MgCl<inf>2</inf>-Na<inf>2</inf>CO<inf>3</inf> solutions
2013, Geochimica et Cosmochimica ActaCitation Excerpt :MHC most likely forms via the transformation of amorphous material (Fig. 9b). Previous studies also showed MHC formation from the amorphous materials (Kamiya et al., 1977; Loste et al., 2003). Recently, Zhang et al. (2012) documented that amorphous calcium carbonate transforms to MHC in the presence of Mg in the solution.