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manganoan dolomite

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Journal Article
Published: 01 April 1978
Canadian Journal of Earth Sciences (1978) 15 (4): 480–500.
... the assemblages may be strongly recrystallized, many of the original, sedimentary textural features and mineralogy have been preserved. Chert (and recrystallized quartz), hematite, magnetite, carbonates (calcite, manganoan siderite and manganoan dolomite) and possibly stilpnomelane are considered...
Journal Article
Published: 01 June 1984
American Mineralogist (1984) 69 (5-6): 472–480.
...Erich U. Petersen; Lawrence M. Anovitz; Eric J. Essene Abstract A Mn-rich orthopyroxene Mg 1.41 Mn 0.56 Ca 0.03 Si 2 O 6 , occurs in a manganiferous pod in the marble units near Balmat, N. Y. The pyroxene coexists with triodite, tourmaline, ferrian braunite, manganoan dolomite, and hedyphane...
Journal Article
Published: 01 October 2000
The Canadian Mineralogist (2000) 38 (5): 1125–1136.
... of abundant scattered dust-like particles of carbonates that may outline the internal “ghost” crystals. The “angel wings” habit is common at Cirotan. Quartz is commonly intergrown with a) sheet silicates that are close to illite in composition at Cirotan, or b) zoned rhombs of manganoan dolomite at Cavnic...
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F ig . 4. a. Well-banded, peloidal iron-formation. In the field this is ref...
Published: 01 September 2004
F ig . 4. a. Well-banded, peloidal iron-formation. In the field this is referred to as a "microconglomerate." Peloids made of hematite (black) and some angular quartz grains (white) set in a matrix of fine-grained manganoan dolomite cement. Transmitted, plane-polarized light. Sample 3 in Table 1
Journal Article
Journal: Economic Geology
Published: 01 September 2004
Economic Geology (2004) 99 (6): 1233–1244.
...F ig . 4. a. Well-banded, peloidal iron-formation. In the field this is referred to as a "microconglomerate." Peloids made of hematite (black) and some angular quartz grains (white) set in a matrix of fine-grained manganoan dolomite cement. Transmitted, plane-polarized light. Sample 3 in Table 1...
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Calcium  L  2,3 -edge XANES spectra of calcite, calcite-structure CaCO 3 , ...
Published: 01 August 2009
F igure 2. Calcium L 2,3 -edge XANES spectra of calcite, calcite-structure CaCO 3 , dolomite, ferroan dolomite, manganoan calcite, and aragonite, recorded by TEY: XANES of CaCO 3 in Figures 1 and 2 are duplicate measurements separated by two days.
Journal Article
Journal: Economic Geology
Published: 01 November 1973
Economic Geology (1973) 68 (7): 1075–1088.
... banded sedimentary carbonate facies generally consists of one or more carbonates (calcite, members of the ferroan dolomite-ankerite series, and siderite), lesser amounts of magnetite, chert, or quartz, and locally some iron silicates. If the original carbonate facies consists only of carbonate, magnetite...
Journal Article
Journal: Economic Geology
Published: 01 July 1982
Economic Geology (1982) 77 (4): 1013–1032.
...Suckew Yun; Marco T. Einaudi Abstract The Yeonhwa I, Yeonhwa II, and Ulchin mines, producing 13.5 million metric tons of ore in the period 1962 to 1981, account for 80 percent of South Korea's Zn and Pb production. These skarn deposits occur in basal Cambrian limestone (locally dolomitic) overlying...
Journal Article
Published: 01 August 2009
American Mineralogist (2009) 94 (8-9): 1235–1241.
...F igure 2. Calcium L 2,3 -edge XANES spectra of calcite, calcite-structure CaCO 3 , dolomite, ferroan dolomite, manganoan calcite, and aragonite, recorded by TEY: XANES of CaCO 3 in Figures 1 and 2 are duplicate measurements separated by two days. ...
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Journal Article
Published: 01 October 2000
The Canadian Mineralogist (2000) 38 (5): 1103–1124.
..., fayalite, ferrosilite, pyrrhotite, magnetite, annite, grunerite) and subordinate calc-silicate intercalations (with calcite, dolomite, siderite, diopside, tremolite, fayalite, quartz), consistent with X (CO 2 ) exhibiting abrupt lithologically controlled changes during peak metamorphism. The manganese...
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Journal Article
Published: 01 October 1987
American Mineralogist (1987) 72 (9-10): 1006–1010.
..., 0.5 to 1 mm in diameter, and is associated with calcite, talc, titanite, dolomite, amphibole, and manganoan ilmenite. The mineral is translucent with a resinous luster and has a white streak, prominent {001} cleavage, and a conchoidal fracture. D calc is 5.00 g/cm 3 . It is optically biaxial...
Journal Article
Published: 01 April 1987
American Mineralogist (1987) 72 (3-4): 319–328.
... is substantially ordered: (Ca 0.84 Mn 0.16 )(Ca 0.27 Mn 0.73 )(CO 3 ) 2 . Long-range cation order in kutnahorite is not detectable using conventional powder X-ray diffraction techniques, but it may be measured by singlecrystal techniques. The large ionic radius of Mn relative to Mg in dolomite leads to coupled...
Journal Article
Published: 01 October 2004
Mineralogical Magazine (2004) 68 (5): 787–799.
... in gregoryite and fractures in nyerereite-gregoryite intergrowths. Silicates include members of the sodian cuspidine–niobian cuspidine–niocalite solid-solution series and manganoan monticellite. Oxides are represented by members of the magnesioferrite–jacobsite–magnetite solid-solution series. Sulphides...
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Journal Article
Published: 01 January 2000
American Mineralogist (2000) 85 (1): 242–250.
.... 1989 ), kinoshitalite is closely associated with dolomite but also braunite, hausmannite, hematite, bixbyite, alkali feldspar, manganoan calcite, and quartz are described in the same sample. The kinoshitalite-bearing samples are from granulite-facies metamorphic manganese ore which occurs...
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Journal Article
Published: 01 May 2003
American Mineralogist (2003) 88 (5-6): 740–747.
...Robert J. Tracy; James S. Beard Abstract A new locality for the Ba-rich trioctahedral mica, kinoshitalite [Ba(Mg,Mn,Fe,Al) 3 Si 1.9−2 Al 2−2.2 O 10 (OH,F) 2 ], has been found in a metamorphosed manganoan marble from Pittsylvania County, Virginia. Metamorphic grade is middle amphibolite facies...
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Journal Article
Published: 02 January 2004
Reviews in Mineralogy and Geochemistry (2004) 56 (1): 301–345.
.../clinozoisite calcite–dolomite–chlorite–paragonite–margarite–chloritoid–zoisite calcite–dolomite–chlorite–zoisite– ± paragonite–garnet calcite–chlorite–zoisite/clinozoisite–garnet Manganoan zoisite-clinozoisite-epidote with abundances between 0.05 and 4.0 wt%, reported as MnO or Mn 2 O 3...
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Journal Article
Published: 01 April 2015
Mineralogical Magazine (2015) 79 (2): 219–241.
... minerals * Khibina 646/001 carbonatite calcite, burbankite, ancylite-(Ce), strontianite, baryte, pyrrhotite, sphalerite, ilmenite 632A/153.7 manganoan ankerite, synchysite-(Ce), ferroan rhodochrosite, strontianite, baryte, fluorite, sphalerite 603/95-1 manganoan ankerite, ferroan...
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Journal Article
Published: 01 May 2002
European Journal of Mineralogy (2002) 14 (3): 621–626.
..., sphalerite, fluorite and barite. At the Hasselhöjden metacarbonate quarry (Hällefors, Örebro) the two minerals appear with mainly sphalerite in talc-bearing dolomite marble. Based on electron-microprobe (EMP) analyses, willemite from Garpenberg Norra contains 0.4–2.1 MnO, 0.2–1.5 MgO and 0.1–1.2 Fe 2 O 3...
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Journal Article
Journal: Economic Geology
Published: 01 August 2022
Economic Geology (2022) 117 (5): 1225–1249.
... returned Mg concentrations of >10%, which represents dolomite phases. All dolomite analyzed on the EMP was non-UVF wall rock, with Mn concentrations ranging from 1,570 to 4,850 ppm and Fe concentrations between 1,050 and 27,300 ppm. Wall-rock calcite has variable Mn contents ranging from less than...
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Journal Article
Published: 01 July 2002
American Mineralogist (2002) 87 (7): 891–898.
...* Locality * Mag = magnetite, Rdn = rhodonite, Rdc = rhodochrosite, Di = diopside, Qtz = quartz, Ep = epidote, Chl = chlorite, Grt = garnet, Phl = phlogopite, Dol = dolomite. A: MnAct manganoan-actinolite: translucent, prismatic regional & contact meta: Qtz+Rdn+Rds Shimozuru mine, Miyazaki...
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