Mineralogy, nucleation and growth of dolomite in the laboratory and sedimentary environment: A review

  title={Mineralogy, nucleation and growth of dolomite in the laboratory and sedimentary environment: A review},
  author={Jay M. Gregg and David L. Bish and Stephen E. Kaczmarek and Hans G. Machel},
Dolomite [CaMg(CO3)2] forms in numerous geological settings, usually as a diagenetic replacement of limestone, and is an important component of petroleum reservoir rocks, rocks hosting base metal deposits and fresh water aquifers. Dolomite is a rhombohedral carbonate with a structure consisting of an ordered arrangement of alternating layers of Ca2+ and Mg2+ cations interspersed with CO32− anion layers normal to the c‐axis. Dolomite has R3¯ symmetry, lower than the (CaCO3) R3¯c symmetry of… 
Comparisons on Mineralogy and Lithology between Paleozoic Marine and Lacustrine Dolostones, Northern China
Dolomite [CaMg(CO3)2], a common mineral in carbonate rocks, can be found in various geological settings from Precambrian to modern age, and is widely reported in almost all sedimentary and digenetic
The impact of Mg2+ ions on equilibration of Mg-Ca carbonates in groundwater and brines
Abstract At temperatures below 50 °C, the log10 (aMg2+/aCa2+) values in groundwater and brines, irrespective of their origin – either carbonaceous or siliceous rocks/sediments – cover the range
Nucleation and growth of Mg-bearing calcite in a shallow, calcareous lake
Reducing microenvironments promote incorporation of magnesium ions into authigenic carbonate forming at methane seeps: Constraints for dolomite formation
In part composed of Mg calcite and dolomite with a nearly continuous spectrum of MgCO3 contents, carbonates forming at marine methane seeps are ideal candidates to study the formation of early
Dolomite dissolution: An alternative diagenetic pathway for the formation of palygorskite clay
Palygorskite is a fibrous, magnesium‐bearing clay mineral commonly associated with Late Mesozoic and Early Cenozoic dolomites. The presence of palygorskite is thought to be indicative of warm,
High Magnesium Calcite and Dolomite composition carbonate in Amphiroa (Lithophyllaceae, Corallinales, Rhodophyta): further documentation of elevated Mg in Corallinales with climate change implications
VHMC/dolomite is more stable than Mg‐calcite, and this may provide a competitive advantage for Amphiroa species as seawater pH declines, and further work is required to determine the metabolic controls on VHMC/.
Non‐classical crystallization of very high magnesium calcite and magnesite in the Coorong Lakes, Australia
The Coorong Lakes, South Australia, are one of the models for unravelling the ‘Dolomite Problem’. Critically, today only a few modern environments remain where large quantities of very high magnesium


Some Hydrothermal Syntheses of Dolomite and Protodolomite
The formation of dolomite from a number of metastable carbonate materials has been investigated. Aragonite-basic magnesium carbonate mixtures, Ca-Mg carbonate gels, and magnesian calcites produced by
First discovery of dolomite and magnesite in living coralline algae and its geobiological implications
Dolomite is a magnesium-rich carbonate min- eral abundant in fossil carbonate reef platforms but surpris- ingly rare in modern sedimentary environments, a conun- drum known as the "Dolomite Problem".
Diagenesis of skeletal carbonates
ABSTRACT Stabilization of metastable aragonite and Mg-calcites is an inevitable process and constitutes a large and important part of carbonate diagenesis. Stabilization can occur in only a limited
Microbial mediation as a possible mechanism for natural dolomite formation at low temperatures
DOLOMITE (CaMg(CO3)2) is a common carbonate mineral which is found in much greater abundance in ancient rocks than in modern carbonate environments. Why this is so remains a mystery. Over the past 30
Constraints on the formation of sedimentary dolomite.
The experimental replacement of calcite and aragonite by dolomite under a variety of conditions indicates that dolomitization can take place in marine and lacustrine environments under two
The occurrence of magnesian calcites in nature
The dolomitization of CaCO3: an experimental study at 252–295°C
Geochemical and neomorphic alteration of dolomite: A review
Many ancient dolomites are suspected of being alteration products of preexisting dolomite phases rather than being originally formed, unaltered dolomites. Such diagenetic alteration commonly results
Holocene Dolomitization of Calcium Carbonate Sediments from the Coastal Sabkhas of Abu Dhabi, U.A.E.: A Stable Isotope Study
  • J. Mckenzie
  • Geology, Geography
    The Journal of Geology
  • 1981
Secondary dolomitization of Holocene calcium carbonate sediments occurs beneath the coastal sabkhas of Abu Dhabi, U.A.E. A stable isotope study of the sabhka sediments and brines indicates that the