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MgCO3

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CaCO3, <span class="search-highlight">MgCO3</span>, Mn, Sr, Fe, δ 18 O and δ 13 C statistics for Boat Harbour For...
Published: 01 March 2009
Table 2. CaCO3, MgCO3, Mn, Sr, Fe, δ 18 O and δ 13 C statistics for Boat Harbour Formation carbonates.
Journal Article
Published: 01 May 2015
American Mineralogist (2015) 100 (5-6): 1172–1181.
...). In all cases, a silicon internal standard (Aldrich; ICDD PDF 27-1402) was used for 2θ calibration. From the PXRD patterns, the molar fraction of MgCO 3 (χ MgCO3 ) in each crystalline end product was determined using the expression from Arvidson and Mackenzie (1999) (1) χ MgCO 3...
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Series: Special Publications
Publisher: SEPM (Society for Sedimentary Geology)
Published: 01 January 2017
DOI: 10.2110/sepmsp.109.10
EISBN: 9781565763531
... by these studies indicates that the laboratory products are not dolomite but rather a mixture of minerals, including very high-magnesium calcite (VHMC). Because VHMC can be “compositionally” indistinguishable from dolomite (i.e., 50 mol% MgCO3), the positions of the principal (104) XRD reflection for VHMC...
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Journal Article
Published: 01 August 2003
Mineralogical Magazine (2003) 67 (4): 671–688.
... these regions indicate intense enrichment of Fe and Mg depletion, revealing late-stage Fe-metasomatism (ankeritization) especially prevalent near pyrite veinlets and disseminations. Dolomite crystals are composed of 52.4–55.0 mol.% CaCO 3 , 29.9–41.2 mol.% MgCO3, 1.8–14.4 mol.% FeCO 3 and 0.75–3.2 mol.% MnCO 3...
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Comparison of the thermal pressure-volume relations( a ) and volume differe...
Published: 01 January 2014
( Zhang et al. 1997 ; Litasov et al. 2008 ). Solid lines in b show the volume differences across the spin transition using magnesite ( V MgCO3 ) as the reference. Vertical ticks: representative errors. (Online color.)
Journal Article
Journal: Geology
Published: 25 April 2024
Geology (2024)
... alteration of K-feldspar-rich fenite by carbonatitic magma. This involved reacting K-feldspar with a synthetic mixture of CaCO3, MgCO3, Mg(OH)2, CaF2, and Nb2O5. At the experimental conditions, a phlogopite-rich calcite-bearing metasomatic rind containing pyrochlore formed on the K-feldspar. This supports...
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Comparison of the thermal pressure-density relations and density difference...
Published: 01 January 2014
; Litasov et al. 2008 ). Solid lines in b show the density differences across the spin transition using the HS magnesiosiderite as the reference; Solid lines in c show the density differences across the spin transition using magnesite (ρ MgCO3 ) as the reference. Vertical ticks: representative errors
Journal Article
Journal: Elements
Published: 01 June 2021
Elements (2021) 17 (3): 195.
... and growth process of high Mg diorite stock Keisuke ESHIMA Crystal structure of nesquehonite, MgCO3·3H(D)2O by neutron diffraction and effect of pH on structural formulas of nesquehonite Gen-ichiro YAMAMOTO, Atsushi KYONO, Jun ABE, Asami SANO-FURUKAWA, Takanori HATTORI Letters Zaïrite in quartz veins...
Journal Article
Journal: AAPG Bulletin
Published: 11 November 1999
AAPG Bulletin (1999) 83 (11): 1729–1758.
... as in the adularia overgrowths. Oil fluid inclusions are observed only in the oil legs of reservoirs. Electron microprobe analyses show few compositional variations in the cloudy mosaics and microrhombs of Block 3, with MgCO3 contents ranging from 49.3 to 51.9 mol % (average 50.5 ±0.7%). Compositions...
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Journal Article
Published: 01 January 2014
American Mineralogist (2014) 99 (1): 84–93.
... ( Zhang et al. 1997 ; Litasov et al. 2008 ). Solid lines in b show the volume differences across the spin transition using magnesite ( V MgCO3 ) as the reference. Vertical ticks: representative errors. (Online color.) ...
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Journal Article
Published: 01 January 1978
Journal of the Geological Society (1978) 135 (1): 107–117.
... % MgCO3) in later layers (Curtis et al. 1975). Nash & Pittman (1975) found calcite cements with up to 10 mole % FeCO3 and 39 mole % MgCO3 in Recent sands with ferroan dolomite developing at depth. It is clear that the range of chemical and isotopic composition of carbonate cements is very great indeed...
Journal Article
Published: 01 June 1993
Bulletin of Canadian Petroleum Geology (1993) 41 (2): 164–185.
...< = 49.9 CaCO3:50.1-51.1 CaCO3: ~ = 49.3 MgCO3: MgCO3: ~ = 50.1 MgCO3: 48.3-49.8: MgCO3:2 = 50.0 Distribution buildup margin; overlying whole buildup margin of marine whole buildup, underlying strata channel, capping and platform and overlying underlying platform strata 1 from Mattes and Mountjoy, 1980...
Journal Article
Published: 01 February 1979
Quarterly Journal of Engineering Geology and Hydrogeology (1979) 12 (1): 31–40.
... et al. (1961) drew attention to Von Morlot's (1848) equation: CaCO3.MgCO3 + CaSO4 = 2CACO3 + MgSO4 This equation shows clearly that any solution in a dolomitic rock which contains gypsum may lead to an SOLUTION/D ISSOLUTION IN KEUPER ROCKS OF THE SEVERN ESTUARY REGION 37 e Zl~Vno 311~40700 ~ -4 , i...
Journal Article