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The difference between dolomite and calcite under the mirror

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  • One-step versus two-step dolomite calcitization

     · Polycrystalline calcite pseudomorphs after dolomite can exhibit mosaic or drusy fabric caused by replacement of the dolomite by calcite (one-step dedolomitization) or dolomite dissolution followed by calcite cementation (two-step dedolomitization) respectively. This study discusses the differences between the two types and interprets the characteristics of the fluid causing them.

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  • Calcitic Lime vs. Dolomite LimeBaker Lime

     · The primary difference lies in the use of magnesium Dolomite lime contains large amounts of magnesium along with calcium carbonate while calcitic lime only contains calcium carbonate. Magnesium is an important mineral for plant health. And if soil needs magnesium wouldn t it be best to just use dolomite lime all the time just in case

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  • Dolomite A sedimentary rock known as dolostone or

    Dolomite also known as "dolostone" and "dolomite rock " is a sedimentary rock composed primarily of the mineral dolomite CaMg (CO 3) 2. Dolomite is found in sedimentary basins worldwide. It is thought to form by the postdepositional alteration of lime mud and limestone by magnesium-rich groundwater. Dolomite and limestone are very similar rocks.

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  • Calcite and dolomite in intrusive carbonatites. II. Trace

     · As can be expected from the structural differences between calcite and dolomite (Table 1) the latter mineral has a greater capacity for small cations approaching Mg 2 in ionic radius (0.72 Å Shannon 1976). Indeed carbonatitic dolomite is higher in Sc (0.745 Å) V (0.64 Å) and Mn (0.83 Å) than calcite (Table 2 Fig. 4d).

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  • Dolomite and dolomitization modela short review

     · divided into two groups primary dolomite and secondary dolomite.2 Primary dolomite precipitate directly from aqueous solution mostly at or near room temperature (20-35oC) with no CaCO 3 dissolution involved.3 However dolomite can also form as a secondary phase replacing the precursor mineral calcite (dolomitization process).

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  • How to differentiate between the three types of carbonates

    University of Babylon It can be distinguished in the field between calcite and dolomite that calcite is more reactive with dilute hydrochloric acid. Under a polarized microscope Calcite commonly

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  • Surface interactions and flotation behavior of calcite

     · Therefore differences measured between calcite and dolomite flotation recoveries cannot be solely the result of the surface interaction affinity factor. Positively charged calcite surfaces and negatively charged dolomite surfaces would also suggest that over the pH range 7–9.5 ( Fig. 4 ) the anionic collector would be attracted

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  • Surface interactions and flotation behavior of calcite

     · Therefore differences measured between calcite and dolomite flotation recoveries cannot be solely the result of the surface interaction affinity factor. Positively charged calcite surfaces and negatively charged dolomite surfaces would also suggest that over the pH range 7–9.5 ( Fig. 4 ) the anionic collector would be attracted

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  • Dolomite and dolomitization modela short review

     · divided into two groups primary dolomite and secondary dolomite.2 Primary dolomite precipitate directly from aqueous solution mostly at or near room temperature (20-35oC) with no CaCO 3 dissolution involved.3 However dolomite can also form as a secondary phase replacing the precursor mineral calcite (dolomitization process).

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  • Surface interactions and flotation behavior of calcite

     · Therefore differences measured between calcite and dolomite flotation recoveries cannot be solely the result of the surface interaction affinity factor. Positively charged calcite surfaces and negatively charged dolomite surfaces would also suggest that over the pH range 7–9.5

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  • Influence of pressure and temperature on the electrical

     · Calcite trans-forms into aragonite in the subducted slab. Ordered dolo-mite which is stable at ambient temperature has a CO 3 2− planar unit and exhibits a rhombohedral ˜ R3 ˚ symmetry. At high temperatures disordered dolomite which is iso-morphous ˜ R3c ˚ with magnesite and calcite is stable. It is known that the reaction dolomite

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  • Calcitic Lime vs. Dolomite LimeBaker Lime

     · The primary difference lies in the use of magnesium Dolomite lime contains large amounts of magnesium along with calcium carbonate while calcitic lime only contains calcium carbonate. Magnesium is an important mineral for plant health. And if soil needs magnesium wouldn t it be best to just use dolomite lime all the time just in case

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  • Carbonates Evaporites and Accessory Minerals

     · The difference in "packing" of Ca and CO 3 into the two the literature but are often discounted a priori because of the absolute failure of all attempts to form dolomite under laboratory conditions at earth surface temperatures i.e. without significant heat and pressure. (>900°C). Distinction between dolomite and calcite has been

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  • Dolomite and dolomitization model- a short review

     · On the basis of the mode of formation dolomites can broadly be divided into two groups primary dolomite and secondary dolomite. 2 Primary dolomite precipitate directly from aqueous solution mostly at or near room temperature (20-35 o C) with no CaCO 3 dissolution involved. 3 However dolomite can also form as a secondary phase replacing the precursor mineral calcite (dolomitization

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  • Dolomite (thin section) Rocks and Minerals

    Dolomite (thin section) Type. Mineral. Cleavage. Perfect rhombohedral cleavage. Colour and Pleochroism. Colorless in thin section weathered or altered samples may appear brown or iron stained due to iron oxides. Relief. Low negative to high positive relief Relief changes upon stage rotation.

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  • Calibration of the d O paleothermometer for dolomite

    overcome kinetic barriers and precipitate dolomite under controlled temperature condi- the difference between the d18O values of the two carbonates isotopic studies of calcite-dolomite pairs

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  • Dolomite and dolomitization model- a short review

     · On the basis of the mode of formation dolomites can broadly be divided into two groups primary dolomite and secondary dolomite. 2 Primary dolomite precipitate directly from aqueous solution mostly at or near room temperature (20-35 o C) with no CaCO 3 dissolution involved. 3 However dolomite can also form as a secondary phase replacing the precursor mineral calcite (dolomitization

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  • Dolomite Mineral Uses and Properties

    Dolomite is a common rock-forming mineral. It is a calcium magnesium carbonate with a chemical composition of CaMg (CO 3) 2. It is the primary component of the sedimentary rock known as dolostone and the metamorphic rock known as dolomitic marble. Limestone that contains some dolomite is known as dolomitic limestone.

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  • The difference in behaviour between calcitic and dolomitic

     · Lanas et al. s study on dolomitic lime mortars set under atmospheric conditions (T = 20 ± 5 °C and RH = 60 ± 10 ) reports that the strength enhancement is due to the formation of portlandite and calcite after a dedolomitization process which occurs when dolomite is present in the mortar.

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  • Difference Between Calcite and Dolomite Compare the

     · Dolomite differs from calcite because of the presence of magnesium. • Calcite reacts quickly with acids and produce carbon dioxide bubbles. But dolomite is weakly reacts with acids producing bubbles very slowly. When hot acids or powdered dolomite is used they may react quickly.

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  • A Raman spectroscopic comparison of calcite and

     · The significant differences between the minerals calcite and dolomite are observed by Raman spectroscopy. Calcite shows the typical bands observed at 1361 1047 715 and 157 cm−1 and the special bands at 1393 1098 1069 1019 299 258 and 176 cm−1 for dolomite are observed. The difference is explained on the basis of the structure

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  • Dolomitean overview ScienceDirect Topics

    The accommodation of excess calcium in dolomite produces a strongly endothermic enthalpy of formation relative to mechanical mixing of calcite and dolomite (Chai et al. 1995) compared to negative heats of mixing between CaCO 3 and MgCO 3 for synthetic magnesian calcites (0.01 < X MgCO 3 < 0.13 ΔH mix > − 1.5 kJ mol − 1 Navrotsky and

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  • Dolomitean overview ScienceDirect Topics

    The accommodation of excess calcium in dolomite produces a strongly endothermic enthalpy of formation relative to mechanical mixing of calcite and dolomite (Chai et al. 1995) compared to negative heats of mixing between CaCO 3 and MgCO 3 for synthetic magnesian calcites (0.01 < X MgCO 3 < 0.13 ΔH mix > − 1.5 kJ mol − 1 Navrotsky and

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  • Calcium vs DolomiteWhat s the difference WikiDiff

    As nouns the difference between calcium and dolomite is that calcium is a chemical element atomic number 20 that is an alkaline earth metal and occurs naturally as carbonate in limestone and as silicate in many rocks while dolomite is (mineral) a saline evaporite consisting of a mixed calcium and magnesium carbonate with the chemical formula ca mg(c oxygeno3)2 it also exists as the rock

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  • Calcium vs DolomiteWhat s the difference WikiDiff

    As nouns the difference between calcium and dolomite is that calcium is a chemical element atomic number 20 that is an alkaline earth metal and occurs naturally as carbonate in limestone and as silicate in many rocks while dolomite is (mineral) a saline evaporite consisting of a mixed calcium and magnesium carbonate with the chemical formula ca mg(c oxygeno3)2 it also exists as the rock

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  • Calcium vs DolomiteWhat s the difference WikiDiff

    As nouns the difference between calcium and dolomite is that calcium is a chemical element atomic number 20 that is an alkaline earth metal and occurs naturally as carbonate in limestone and as silicate in many rocks while dolomite is (mineral) a saline evaporite consisting of a mixed calcium and magnesium carbonate with the chemical formula ca mg(c oxygeno3)2 it also exists as the rock

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  • Dolomite and dolomitization modela short review

     · divided into two groups primary dolomite and secondary dolomite.2 Primary dolomite precipitate directly from aqueous solution mostly at or near room temperature (20-35oC) with no CaCO 3 dissolution involved.3 However dolomite can also form as a secondary phase replacing the precursor mineral calcite (dolomitization process).

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  • A Raman spectroscopic comparison of calcite and dolomite

     · The difference is explained on the basis of the structure variation of the two minerals. Calcite has a trigonal structure with two molecules per unit cell and dolomite has a hexagonal structure. This is more likely to cause the splitting and distorting of the carbonate groups.

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  • Dolomitean overview ScienceDirect Topics

    The accommodation of excess calcium in dolomite produces a strongly endothermic enthalpy of formation relative to mechanical mixing of calcite and dolomite (Chai et al. 1995) compared to negative heats of mixing between CaCO 3 and MgCO 3 for synthetic magnesian calcites (0.01 < X MgCO 3 < 0.13 ΔH mix > − 1.5 kJ mol − 1 Navrotsky and

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  • Influence of pressure and temperature on the electrical

     · Calcite trans-forms into aragonite in the subducted slab. Ordered dolo-mite which is stable at ambient temperature has a CO 3 2− planar unit and exhibits a rhombohedral ˜ R3 ˚ symmetry. At high temperatures disordered dolomite which is iso-morphous ˜ R3c ˚ with magnesite and calcite is stable. It is known that the reaction dolomite

    Chat Online
  • Calcitic Lime vs. Dolomite LimeBaker Lime

     · The primary difference lies in the use of magnesium Dolomite lime contains large amounts of magnesium along with calcium carbonate while calcitic lime only contains calcium carbonate. Magnesium is an important mineral for plant health. And if soil needs magnesium wouldn t it be best to just use dolomite lime all the time just in case

    Chat Online
  • How to differentiate between the three types of

    Under a polarized microscope Calcite commonly shows lamellar twinning said usually to be absent from dolomite and dolomite grains can be clearly distinguished dolomite rhombs. Cite Popular

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  • Dolomite A sedimentary rock known as dolostone or

    Dolomite also known as "dolostone" and "dolomite rock " is a sedimentary rock composed primarily of the mineral dolomite CaMg (CO 3) 2. Dolomite is found in sedimentary basins worldwide. It is thought to form by the postdepositional alteration of lime mud and limestone by magnesium-rich groundwater. Dolomite and limestone are very similar rocks.

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  • Self-accelerating volumetric dolomite-for-calcite

     · The difference in simulated trends of precipitated dolomite increments and calcium concentrations may be a consequence of differences in the rates of decrease in the ICP dolo and IAP dolo between these two test brines (Figs. 3 4) as outlined in the preceding rationale concerning changes in the solubility product of dolomite or ICP dolo

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  • A Raman spectroscopic comparison of calcite and

     · The significant differences between the minerals calcite and dolomite are observed by Raman spectroscopy. Calcite shows the typical bands observed at 1361 1047 715 and 157 cm−1 and the special bands at 1393 1098 1069 1019 299 258 and 176 cm−1 for dolomite are observed. The difference is explained on the basis of the structure

    Chat Online
  • Self-accelerating volumetric dolomite-for-calcite

     · The difference in simulated trends of precipitated dolomite increments and calcium concentrations may be a consequence of differences in the rates of decrease in the ICP dolo and IAP dolo between these two test brines (Figs. 3 4) as outlined in the preceding rationale concerning changes in the solubility product of dolomite or ICP dolo

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  • (PDF) Aragonite breunnerite calcite and dolomite in the

    Grains of calcite and dolomite (both white) are very rare within the lens. The upper left hand side of the thin section contains several millimetre-sized clusters of calcite and dolomite grains. 15

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  • Calcite and dolomite in intrusive carbonatites. II. Trace

     · As can be expected from the structural differences between calcite and dolomite (Table 1) the latter mineral has a greater capacity for small cations approaching Mg 2 in ionic radius (0.72 Å Shannon 1976). Indeed carbonatitic dolomite is higher in Sc (0.745 Å) V (0.64 Å) and Mn (0.83 Å) than calcite (Table 2 Fig. 4d).

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  • Dolomite and dolomitization model- a short review

     · On the basis of the mode of formation dolomites can broadly be divided into two groups primary dolomite and secondary dolomite. 2 Primary dolomite precipitate directly from aqueous solution mostly at or near room temperature (20-35 o C) with no CaCO 3 dissolution involved. 3 However dolomite can also form as a secondary phase replacing the precursor mineral calcite (dolomitization

    Chat Online
  • Dolomite and dolomitization modela short review

     · divided into two groups primary dolomite and secondary dolomite.2 Primary dolomite precipitate directly from aqueous solution mostly at or near room temperature (20-35oC) with no CaCO 3 dissolution involved.3 However dolomite can also form as a secondary phase replacing the precursor mineral calcite (dolomitization process).

    Chat Online
  • Dolomite and dolomitization modela short review

     · divided into two groups primary dolomite and secondary dolomite.2 Primary dolomite precipitate directly from aqueous solution mostly at or near room temperature (20-35oC) with no CaCO 3 dissolution involved.3 However dolomite can also form as a secondary phase replacing the precursor mineral calcite (dolomitization process).

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  • Aragonite breunnerite calcite and dolomite in the CM

     · Type 2a calcite and dolomite were described from Cold Bokkeveld by Johnson and Prinz (1993) and de Leuw et al. (2010) as indicated by the striped boxes. Download Download high-res image (252KB) Download Download full-size image Fig. 2. Plots showing the differences between CMs in the properties of aragonite crystals.

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