structure of dolomite

Contact Us: cdche@xinhaimining.net

Dolomite - Wikipedia

Dolomite is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally CaMg(CO3)2. The term is also used for a sedimentary carbonate rock composed mostly of the mineral dolomite. An alternative name sometimes used for the dolomitic rock type is dolostone. Contents. [hide]. 1 History; 2...

Read More

Dolomite Structure - UW-Green Bay

Sep 22, 1997 ... Dolomite has almost exactly the same structure as calcite except that layers of magnesium and calcium atoms alternate. The alternation means a complete unit cell of dolomite is not the same as a cleavage rhombohedron. In the view at left, calcium atoms are green and magnesium are orange. Only one...

Read More

Dolomite Mineral Data

Click Here for Large Dolomite Structure Window Crystal Structure: Mouse drag1 - LMB Manipulate Structure drag2 - RMB Resize/Rotate Keyboard S - Stereo Pair on/off. H - Help Screen I - Data Info A - Atoms On/Off P - Polyhedra On/Off B - Bonds On/Off Help on Above...

Read More

Dolomite: The mineral dolomite information and pictures - Minerals.net

Detailed description, properties, locality information guide about the mineral dolomite. ... and a rock. The mineral is the pure form with a defined crystal structure and chemical formula, whereas dolomite rock is composed chiefly of the mineral Dolomite, but also contains impurities such as Calcite, Quartz, and feldspar.

Read More

Structure of Dolomite - Chemistry Stack Exchange

I don't really like the picture but let's try to do this with that. So, you probably know about the NaCl lattice? In there sodium is surrounded by six chlorides, which forms an octahedron. Chloride has six sodium around it to form another octahedron. And you have probably heard that also other compounds...

Read More

Dolomite: Dolomite mineral information and data. - Mindat.org

Dolomite Group . Ankerite-Dolomite Series . Usually found as druzes or clusters of small rhombohedral crystals with a somewhat 'saddle'-like shape, white to tan to pink in color. For rocks also see dolostone .

Read More

Dolomite Structures

University of Colorado. Mineral Structure and Property Data. Dolomite Group. The dolomite group is composed of the rhombohedral carbonates dolomite (CaMg(CO3)2) and ankerite (CaFe(CO3)2). The crystal structure of dolomite. Dolomite Ankerite (CaMg(CO3)2) (CaFe(CO3)2). Form.Wt. Z 3 3 CrystalSystem Trig Trig...

Read More

Calcium magnesium carbonate | C2CaMgO6 - PubChem

PubChem CID: 61833. Chemical Names: DOLOMITE; Calcium magnesium dicarbonate; EINECS 230-274-9; Carbonic acid, calcium magnesium salt (2:1:1); UNII-UG9H2002BF; Gurhofite More... Molecular Formula: C2CaMgO6. Molecular Weight: 184.399 g/mol. InChI Key: HHSPVTKDOHQBKF-UHFFFAOYSA-J.

Read More

Dolomite - AAPG Wiki

Mar 3, 2016 ... Mineralogy. Dolomite is a rhombohedral carbonate with the ideal formula CaMg(CO3)2 in which calcium and magnesium occupy preferred sites. In the ideal mineral, planes of CO3 anions alternate with planes of cations with the c-axis of the crystal perpendicular to the alternating stacked anion and cation...

Read More

DOLOMITE (Calcium Magnesium Carbonate) - Amethyst Galleries

Dolomite differs from calcite, CaCO3, in the addition of magnesium ions to make the formula, CaMg(CO3)2. The magnesium ions are not the same size as calcium and the two ions seem incompatible in the same layer. In calcite the structure is composed of alternating layers of carbonate ions, CO3, and calcium ions.

Read More

Crystal structure refinements of magnesite, calcite ... - RRuff

Introduction. The main features of the atomic arrangement in the calcite and in the dolomite structure type have been known since the early days of X-ray crystallography (calcite: Bragg, 1914; dolomite: Bragg, 1914; Wyckoff and. Merwin, 1924), and modern refinements have been published for some of the representatives...

Read More

Structural refinements of dolomite and a magnesian calcite ... - RRuff

American Mineralogist, Volume 62, pages 772-783, 1977. Structural refinements of dolomite and a magnesian calcite and implications for dolomite formation in the marine environment. PrNrlops L. Alruopn l6l0 Myrtle Auenue, Plainfield, New Jersey07063. Abstract. The structures of dolomite and a calcite containing l0 mole...

Read More

Structure of the (101[combining macron]4) surfaces of calcite ...

Structure of the (10 [1 with combining macron] 4) surfaces of calcite, dolomite and magnesite under wet and dry conditions. Kate Wright† *ac, Randall T. Cygan b and Ben Slater c aDepartment of Earth Sciences, Uni [italic v] ersity of Manchester, Oxford Road, Manchester, UK M13 9PL bGeochemistry Department, Sandia...

Read More

Dolomite Dolomites - Fossiel.net

Dolomite. Dolomite is formed by diagenesis of limestone and has the chemical formula CaMg(CO3)2. Because of diagenesis magnesium ions (Mg) replace calcium (Ca) in the Crystal structure' target='_parent'>crystal structure. Dolomite is stronger than limestone and because of recrystallization any fossils present are...

Read More

Structure of the (1014) Surfaces of Calcite, Dolomite ... - OSTI.GOV

Structure of the (1014) Surfaces of Calcite,. Dolomite, and Magnesite under Wet and Dry. Conditions. Kate Wrightl*, Randall T. Cygan2 and Ben Slater3. lDepartment of Earth Sciences, University of Manchester, Oxford Road, Manchester. M139PL, UK. 2Geochemistry Department, Sandia National Laboratories, Albuquerque...

Read More

The Relation of Dolomite Associated with Faults to the Stratigraphy ...

The relation of dolomite associated with faults to the stratigraphy and structure of central Kentucky. (Contributions to the geology of Kentucky) (Geological Survey professional paper ; 1151-A) Bibliography: p. Supt. of Docs. no. : I 19.16:1151-A. 1. Dolomites Kentucky. 2. Faults (Geology) Kentucky. 3. Geology Kentucky.

Read More

Comparison of Dolomite Crystal Structure, Calcinations Dolomite ...

Comparison of Dolomite Crystal Structure, Calcinations Dolomite and Magnesium Hydroxide in Partial Calcinations and Slaking Process. E Sulistiyono1, F Firdiyono1, NC Natasha1 and Y Amalia2. Published under licence by IOP Publishing Ltd IOP Conference Series: Materials Science and Engineering, Volume 176,...

Read More

Dolomite - Mine Engineer

A mineral is a naturally occuring, homogeneous, solid with a crystalline atomic structure. Crystallinity implies that a mineral has a definite and limited range of composition, and that the composition is expressible as a chemical formula. Some definitions of minerals give them as inorganic materials, however both diamonds...

Read More

Mineralogy, nucleation and growth of dolomite in the laboratory and ...

Mar 3, 2015 ... bearing on the topic at hand. Finally, the recent hypothesis concerning nucleation and growth of dolomite by means of microbial catalysis is care- fully evaluated. MINERALOGY OF DOLOMITE. Basic crystallography. When considering the crystal structure of the rhombohedral carbonates, it is useful to begin.

Read More

Missouri Department of Natural Resources

Commodity: Limestone, a sedimentary rock that is dominantly composed of the calcium-bearing carbonate minerals calcite and dolomite. Calcite is chemically calcium carbonate (formula CaCO3). Dolomite is chemically calcium-magnesium carbonate (formula CaMg(CO3)2). Economic Importance: Limestone is used to...

Read More

Construction on dolomite in south Africa | SpringerLink

Damage to structures and loss of life have been more severe on dolomite than on any other geological formation in southern Africa. The subsidence that occurs on dolomitic terrain following...

Read More

Effect of grinding on the crystal structure of recently ... - NOPR

586-591. Effect of grinding on the crystal structure of recently excavated dolomite. V Ramasamy*, V Ponnusamy, S Sabari, S R Anishia & S S Gomathi. Department of Physics, Annamalai University, Annamalai Nagar, Tamilnadu 608 002. E-mail: srsaranram@rediffmail.com. Received 11 November 2008; revised 6 May 2009...

Read More

Ternary irono magnesium, calcium carbonates: A thermodynamic ...

dered phase is limited to compositions near CaCO, (Cc) and near (Mg,Fe)CO, (magnesite-siderite solid solution, or Mag-Sid). The ordered intermediates with composi- tions near Ca(Mg,Fe)(CO,), (dolomite-ankerite solid so- lution, or Dol-Ank) disorder at high temperatures to the calcite structure. At higher temperatures there...

Read More

Thermodynamic Modelling of Dolomite Behavior in Aqueous Media

Oct 27, 2011 ... The crystal structure of magnesite is the same as one for calcite, and then magnesite properties are similar to those of calcite. However, a significant difference in. Pauling's ionic radii: 99 pm (for Ca+2), 65 pm (for Mg+2), [5] causes an incompatibility of the cations in the same layer of dolomite structure.

Read More

Structure and Stability of High-Pressure Dolomite with Implications ...

Title: Structure and Stability of High-Pressure Dolomite with Implications for the Earth's Deep Carbon Cycle. Authors: Solomatova, N. V.; Asimow, P. D.. Affiliation: AA(California Institute of Technology, Pasadena, CA, United States ), AB(California Institute of Technology, Pasadena, CA, United States ). Publication: American...

Read More

Dolomite - Sandatlas

Dolomite is a common rock-forming mineral. It is the primary constituent of dolomite rock (dolostone) and dolomarble. It is similar to the most common carbonate mineral calcite. These two share some similarities in structure and are very closely related chemically. Calcite is chemically CaCO3 (calcium carbonate), dolomite is...

Read More

Dolomite Dolomites - Fossiel.net

Dolomite. Dolomite is formed by diagenesis of limestone and has the chemical formula CaMg(CO3)2. Because of diagenesis magnesium ions (Mg) replace calcium (Ca) in the Crystal structure' target='_parent'>crystal structure. Dolomite is stronger than limestone and because of recrystallization any fossils present are...

Read More

Dolomite | Define Dolomite at Dictionary.com

a white mineral often tinted by impurities, found in sedimentary rocks and veins. It is used in the manufacture of cement and as a building stone (marble). Composition: calcium magnesium carbonate. Formula: CaMg(CO3)2. Crystal structure: hexagonal (rhombohedral). 2. a sedimentary rock resembling limestone but...

Read More

Why is this cloudy-center dolomite taking this cross shape?

Get expert answers to your questions in Applied Geology, Dolomite, Geologic Sediments and Sedimentary Geology and more on ResearchGate, the professional network for scientists.

Read More

Dolomite - Mineral Web

Dolomite [CaMg(CO3)2]. Structure Trigonal Space Group : R-3h (No. 148) a=4.812 Å, c=16.020 Å a=b=90.00, g=120.00. Z=4. Atomic Positional Parameters Ca 3a 0.0000 0.0000 0.0000. Mg 3b 0.0000 0.0000 0.5000. C1 6c 0.0000 0.0000 0.2429. O1 18f 0.2480 -0.0347 0.2440. References H Effenberger, K Mereiter and J...

Read More

Dolomite-IV: Candidate structure for a carbonate in the ... - De Gruyter

ABSTRACT. We report the crystal structure of dolomite-IV, a high-pressure polymorph of Fe-dolomite stabi- lized at 115 GPa and 2500 K. It is orthorhombic, space group Pnma, a = 10.091(3), b = 8.090(7), c = 4.533(3) Å, V = 370.1(4) Å3 at 115.2 GPa and ambient temperature. The structure is based on the presence of...

Read More

Dolomites facts, information, pictures | Encyclopedia.com articles ...

Dolomite is a fairly soft mineral that occurs as crystals as well as in large sedimentary rock beds several hundred feet thick. The crystals—usually rhombohedral in shape—are transparent to translucent and are colorless, white, reddish-white, brownish-white, gray, or sometimes pink. In powdered form, dolomite dissolves...

Read More

Crystal structure study of a cobaltoan dolomite from Kolwezi ...

A structural study has been undertaken on a cobaltoan dolomite, with chemical formula CaMg0.83Co0.17(CO3)2 (calcium magnesium cobalt dicarbonate), from Kolwezi, Democratic Republic of Congo. Pale-pink euhedral cobaltoan dolomite was associated with kolwezite [(Cu1.33Co0.67)(CO3)(OH)2] and cobaltoan...

Read More

Pore Structure Characterization of Indiana Limestone and Pink ...

Pore Structure Characterization of Indiana Limestone and Pink Dolomite from Pore Network Reconstructions. Marina Freire-Gormaly1,2, Jonathan S. Ellis1, Heather L. MacLean2 and Aimy Bazylak1*. 1 Thermofluids for Energy and Advanced Materials (TEAM) Laboratory, Department of Mechanical & Industrial Engineering,.

Read More

Calcined Dolomite - Digitalfire

Alternate names: Dead-burned Dolomite - Digitalfire Reference Database (no ads) ... Calcined Dolomite. Formula: CaO.MgO. Alternate Names: Dead-burned Dolomite ... Dead-burned dolomite is produced when dolomite is calcined at very high temperatures. It is used both as a refractory product in granular form to repair...

Read More

Dolomite - Qld Organics

Dolomite is an economical way to increase the soil pH in acidic soils (sweetens the soil) and to raise magnesium levels in deficient soils. Dolomite also adds calcium and helps to improve soil structure and increases the availability of some trace elements. Applying calcium in isolation can induce a magnesium deficiency...

Read More

Dolomite | Minerals Education Coalition

Dolomite is a calcium magnesium carbonate mineral which has many characteristics similar to calcite. In places where access to limestone is not available or more costly, dolomites are used in its place for the basic materials from which most building stone and a significant percentage ... Chemical Formula. CaCO3•MgCO3...

Read More

Hydrous calcium magnesium carbonate, a possible precursor to the ...

Oct 26, 2010 ... Material of composition Ca1.056 Mg0.944 (SO4)0.035 (CO3)1.965 ⋅0.26H2O has been synthesised from solutions of Ca(NO3)2, MgSO4 and Na2CO3. X-ray diffraction and infrared spectroscopy show this to be identical to "protodolomite" found in nature, and that the structure is related to dolomite but is...

Read More

Dolomite – Virtual Museum of Molecules and Minerals

Dolomite. Dolomite is a calcium/magnesium carbonate mineral. It has a formula unit composition of CaMg(CO3)2. Dolomite has a trigonal crystal system with rhombohedral habit. In ideal dolomite, calcium and magnesium are separated into completed separate planes, quite unlike magnesian calcites in which Mg randomly...

Read More

The Origin and Importance of the Dolomite-Limestone Breccia ...

During the exploratory geological works for the railway tunnel project through the ∆iĘarija Mt. belt (western. Croatia - Fig. 1) special attention was paid to the prob- lem of the complex of dolomite-limestone breccia on the NE flank of the mountain, regarding the position, shape, and origin of the sedimentary body. Previously...

Read More