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dolomite Formation, Structure, Properties, Uses, Facts ...

Dolomite, type of limestone, the carbonate fraction of which is dominated by the mineral dolomite, calcium magnesium carbonate [CaMg(CO 3) 2].. General considerations. Along with calcite and aragonite, dolomite makes up approximately 2 percent of the Earth’s crust. The bulk of the dolomite constitutes dolostone formations that occur as thick units of great areal extent in many sequences of ...

Dolomite: A sedimentary rock known as dolostone or ...

OverviewFormationPropertiesSignificanceTerminologyGeologyUsesDolomite, also known as \"dolostone\" and \"dolomite rock,\" is a sedimentary rock composed primarily of the mineral dolomite, CaMg(CO3)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 (mineral) - Wikipedia

OverviewFormationHistoryPropertiesUsesSee also

Modern dolomite formation has been found to occur under anaerobic conditions in supersaturated saline lagoons along the Rio de Janeiro coast of Brazil, namely, Lagoa Vermelha and Brejo do Espinho. It is often thought that dolomite will develop only with the help of sulfate-reducing bacteria(e.g. Desulfovibrio brasiliensis). However, low-temperature dolomite may occur in natural environments rich in organic matter and microbial cell surfaces. This occurs as a result of magnesium complexation by carboxyl gro

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Dolomite - Wikipedia

Dolomite may refer to: . Dolomite (mineral), a carbonate mineral Dolomite (rock), also known as dolostone, a sedimentary carbonate rock Dolomite, Alabama, United States, an unincorporated community; Dolomite, California, United States, an unincorporated community; Dolomites, a section of the Alps; Triumph Dolomite (1934–40), a sporting cars made by Triumph Motor Company

How does dolomite form? -- ScienceDaily

7-6-2012  The formation of the mineral dolomite is still puzzling scientists. Researchers have now shown that bacteria can facilitate the formation of dolomite. The study has been published online in

Formation of Dolomite Composition - Compare Nature

Dolomite Formation. Dolomite formation took place millions of years ago. There are a variety of Dolomite Uses and the Dolomite Reserves are found in many countries around the world. The rocks in the earth’s crust continuously undergo changes in their composition which leads to formation

Dolomite - Microfluidic Systems and Components

Dolomite Microfluidics provides microfluidics based solutions for a range of applications including drug encapsulation, droplet manufacture and particle generation. We provide complete systems as well as individual modular components to balance ease of use with flexibility.

Microbial mediation as a possible mechanism for natural ...

21-9-1995  Over the past 30 years, dolomite formation has been observed in several modern environments, and various thermodynamic, kinetic and hydrological factors have been proposed to explain its formation1,2.

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dolomite formation - Ons Vertier

Dolomite Formationinternetchemistry. The formation of the mineral dolomite is still puzzling scientists. Researchers from the Cluster of Excellence 'The Future Ocean' and GEOMAR at the Helmholtz Centre for Ocean Research in Kiel together with colleagues from Switzerland and Spain have now shown that bacteria can facilitate the formation of dolomite.

Microbial mediation as a possible mechanism for natural ...

Over the past 30 years, dolomite formation has been observed in several modern environments, and various thermodynamic, kinetic and hydrological factors have been proposed to explain its formation1,2.

dolomite formation - ddst.nl

Constraints on the Formation of Sedimentary Dolomite - Science Common sites for dolomite formation are areas where the dissolved sulfate concentration is

Dolomie — Wikipédia

Gîtologie. La dolomie est donc une roche sédimentaire composée principalement de dolomite (entre 50 et 100 %) et de calcite, qui n'ont pas la même densité (dolomite : 2,87 ; calcite : 2,71), jouant un rôle fondamental dans l'érosion de la roche.. Elle n'est pas effervescente à froid avec l'acide chlorhydrique dilué à 10 % comme le calcaire.

Dolomite rock Britannica

Other articles where Dolomite is discussed: dolomite: General considerations: bulk of the dolomite constitutes dolostone formations that occur as thick units of great areal extent in many sequences of chiefly marine strata. (The rock dolostone is referred to by only the mineral name—i.e., dolomite—by many geologists.) The Dolomite Alps of northern Italy are a well-known example.

Dolomitization - an overview ScienceDirect Topics

Because the strontium ratios of the dolomite are 0.70884–0.70889 (± 0.00002), which corresponds to the ratios of seawater in the early to middle Miocene (Burke et al., 1982; DePaolo, 1986), it is impossible to attribute the dolomite formation to a marine fluid alone

University of Minnesota’s Mineral Pages: Dolomite

Dolomite crystals also line or fill pores in carbonate limestone and dolostone rocks or in hydrothermal veins. Other important dolomite occurrences include marble rocks formed from the alteration of sedimentary dolostone, and dolomite associated with altered ultramafic igneous rocks like serpentinite.

DOLOMITE (Calcium Magnesium Carbonate)

Dolomite, which is named for the French mineralogist Deodat de Dolomieu, is a common sedimentary rock-forming mineral that can be found in massive beds several hundred feet thick.They are found all over the world and are quite common in sedimentary rock sequences. These rocks are called appropriately enough dolomite or dolomitic limestone. Disputes have arisen as to how these dolomite

CONDITIONS FOR DOLOMITE FORMATION

CONDITIONS FOR DOLOMITE FORMATION. From the above comparisons of patterns among dolomite rhombs, carbonate particles, and lithified layers, and from the patterns of sedimentation, it is clear that although dolomite formation is somehow tied to high productivity, the important details remain unsolved when using only this field evidence.

Dolomite (mineral) - Wikipedia

Formation. Modern dolomite formation has been found to occur under anaerobic conditions in supersaturated saline lagoons along the Rio de Janeiro coast of Brazil, namely, Lagoa Vermelha and Brejo do Espinho.It is often thought that dolomite will develop only with the help of sulfate-reducing bacteria (e.g. Desulfovibrio brasiliensis). However, low-temperature dolomite may occur in natural ...

dolomite formation - ddst.nl

Constraints on the Formation of Sedimentary Dolomite - Science Common sites for dolomite formation are areas where the dissolved sulfate concentration is

Dolomite (mineral) - Wikipedia

Formation. Modern dolomite formation has been found to occur under anaerobic conditions in supersaturated saline lagoons along the Rio de Janeiro coast of Brazil, namely, Lagoa Vermelha and Brejo do Espinho.It is often thought that dolomite will develop only with the help of sulfate-reducing bacteria (e.g. Desulfovibrio brasiliensis). However, low-temperature dolomite may occur in natural ...

CONDITIONS FOR DOLOMITE FORMATION

CONDITIONS FOR DOLOMITE FORMATION. From the above comparisons of patterns among dolomite rhombs, carbonate particles, and lithified layers, and from the patterns of sedimentation, it is clear that although dolomite formation is somehow tied to high productivity, the important details remain unsolved when using only this field evidence.

Dolomie — Wikipédia

Gîtologie. La dolomie est donc une roche sédimentaire composée principalement de dolomite (entre 50 et 100 %) et de calcite, qui n'ont pas la même densité (dolomite : 2,87 ; calcite : 2,71), jouant un rôle fondamental dans l'érosion de la roche.. Elle n'est pas effervescente à froid avec l'acide chlorhydrique dilué à 10 % comme le calcaire.

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 conditions: (i) low dissolved sulfate concentrations and (ii) insubstantial contemporaneous silica diagenesis. Common sites for dolomite formation are areas where the dissolved sulfate concentration is ...

The Birth of the Dolomites - Beautiful Mountains born out ...

"The surface of the earth is far more beautiful and far more intricate than any lifeless world. Our planet is graced by life and one quality that sets life apart is it's complexity.

limestone dolomite formed - Ons Vertier

3. Acidizing Limestones, Dolomite and Sandstone Formations. Jan 03, 2016 3.1 Limestone and Dolomite. When either limestone and/or dolomite formation are stimulated, acid enters the formation through pores in the matrix of the rock or through natural or induced fractures.

Microbial community composition and dolomite

The Khor Al-Adaid sabkha in Qatar is among the rare extreme environments on Earth where it is possible to study the formation of dolomite—a carbonate mineral whose origin remains unclear and has been hypothetically linked to microbial activity. By combining geochemical measurements with microbiological analysis, we have investigated the microbial mats colonizing the intertidal areas of sabhka.

Neoproterozoic marine dolomite hardgrounds and their ...

The Tapley Hill Formation overlies the Sturtian glacials (Merinjina Tillite; Preiss, 1987) and predominantly consists of deep marine mudstones.The Tindelpina Shale is the basal member of the Tapley Hill Formation and contains the Sturtian cap dolomite (Giddings and Wallace, 2009a).In the Arkaroola-Gammon Ranges area, the Tapley Hill Formation has been subdivided into a number of

New Insights into Formation of Mineral Dolomite

Evidence of primary dolomite formation by a process as common as microbial sulphate respiration under conditions that currently prevail in the seabed, provides new insights into the reconstruction ...