Lindbergite, a new Mn oxalate dihydrate from Boca Rica mine, Galiléia, Minas Gerais, Brazil, and other occurrences
-
Daniel Atencio
,
José M.V. Coutinho
Abstract
The new mineral lindbergite, Mn(C2O4)·2H2O, is a secondary mineral in the Lavra da Boca Rica granite pegmatite, Sapucaia do Norte, Galiléia Co., Minas Gerais, Brazil. It occurs as: (1) white short prismatic crystals 0.1 to 0.3 mm in length, interpreted as pseudomorphs after the orthorhombic trihydrate, with faces of {100}, {hk0}, {010}, and {0kl} forms, rounded edges, and twinning on (010); and (2) grayish-white aggregates in 0.1 mm thick translucent crusts made up of interlocking irregularly contoured platelets up to 0.03 mm in length. Lindbergite is transparent, has a white streak, vitreous luster, a perfect cleavage parallel {010}, and is non-fluorescent. The Mohs' hardness is 21/2 and its tenacity crumbly. The measured density is 2.10(3) g/cm3 (calculated 2.251 g/cm3). Lindbergite is biaxial negative, with nα = 1.424(3), nβ = 1.550(3), nγ = 1.65(1) (white light), 2V (obs.) = 80(2)°, 2V (calc.) = 77°. Dispersion is not detectable or very weak with r > v. Orientation Y ^ c= 20°. The empirical composition is (Mn1.11Na0.01Al0.01)Σ1.13(C1.94O4)·2.15H2O. The mineral is monoclinic, C2/c, a = 11.995(5), b = 5.632(2), c = 9.967(7) Å, β = 128.34(4)°, V = 528.1(5) Å3, Z = 4. Lindbergite is the Mn analogue of humboldtine and glushinskite. Associated minerals at the type locality are the phosphates triphylite, phosphosiderite, frondelite, strengite, cyrilovite, bermanite, rockbridgeite, huréaulite, tavorite, reddingite, heterosite, laueite, and unidentified minerals. Additional occurrences of lindbergite are from Parsettens, Grisons, Switzerland, the Lecht Mines, Banffshire, Scotland, and the Morefield Pegmatite, Amelia, Virginia. Lindbergite also has been recorded from three localities in the Black Forest, Germany: Clara Mine, Oberwolfach, Wolfach Valley, Baden-Württemberg; Ortenberg near Offenburg; and Gremmelsbach near Triberg, but the natural origin was not firmly established for the last one. An occurrence of orthorhombic Mn(C2O4)·3H2O has been reported at Falotta, Grisons, Switzerland.
© 2015 by Walter de Gruyter Berlin/Boston
Artikel in diesem Heft
- Hydroxyl in omphacites and omphacitic clinopyroxenes of upper mantle to lower crustal origin beneath the Siberian platform
- Structural variations induced by difference of the inert pair effect in the stibnite-bismuthinite solid solution series (Sb,Bi)2S3
- Hydrogen solubility and speciation in natural, gem-quality chromian diopside
- Ultrastructure, aggregation-state, and crystal growth of biogenic nanocrystalline sphalerite and wurtzite
- Impactite from Henbury, Australia
- Neutron and synchrotron X-ray diffraction study of the structures and dehydration behaviors of ramsdellite and “groutellite”
- Hydrothermal synthesis and crystal chemistry of the new strontium uranyl selenites, Sr[(UO2)3(SeO3)2O2]⋅4H2O and Sr[UO2(SeO3)2]
- Study of cation order-disorder in MgAl2O4spinel by in situ neutron diffraction up to 1600 K and 3.2 GPa
- Magnetic granulometry from equilibrium magnetization measurements: Mineral magnetometry of superparamagnetic particles and application to synthetic ferrihydrites
- Hydroxide in kyanite: A quantitative determination of the absolute amount and calibration of the IR spectrum
- Analysis of uranyl-bearing phases by EXAFS spectroscopy: Interferences, multiple scattering, accuracy of structural parameters, and spectral differences
- X-ray diffraction evidence for a monoclinic form of stibnite, Sb2S3, below 290 K
- Sulfur species at chalcopyrite (CuFeS2) fracture surfaces
- Dehydration and rehydration process in boggsite: An in situ X-ray single-crystal study
- Empressite, AgTe, from the Empress-Josephine mine, Colorado, U.S.A.: Composition, physical properties, and determination of the crystal structure
- Correlation of pH-dependent surface interaction forces to amino acid adsorption: Implications for the origin of life
- A near-infrared spectroscopic study of hydroxyl in natural chondrodite
- High-pressure elasticity of a natural magnetite crystal
- Isotopic and chemical alteration of zircon by metamorphic fluids: U-Pb age depth-profiling of zircon crystals from Barrowʼs garnet zone, northeast Scotland
- A novel approach to determine high-pressure high-temperature fluid and melt compositions using diamond-trap experiments
- Lindbergite, a new Mn oxalate dihydrate from Boca Rica mine, Galiléia, Minas Gerais, Brazil, and other occurrences
- Pyrophyllite dehydroxylation process by First Principles calculations
- Plagioclase from planetary basalts: Chemical signatures that reflect planetary volatile budgets, oxygen fugacity, and styles of igneous differentiation
- The structure of the manganese oxide on the sheath of the bacterium Leptothrix discophora: An XAFS study
- An X-ray Rietveld study of piemontite on the join Ca2Al3Si3O12(OH)–Ca2Mn33+Si3O12(OH) formed by hydrothermal synthesis
- Raman spectroscopy of basic copper(II) and some complex copper(II) sulfate minerals: Implications for hydrogen bonding
- Incorporation of sodium into the chlorite structure: the crystal structure of glagolevite, Na(Mg,Al)6[Si3AlO10](OH,O)8
- Cation disorder in dolomite, CaMg(CO3)2, and its influence on the aragonite + magnesite ↔ dolomite reaction boundary
Artikel in diesem Heft
- Hydroxyl in omphacites and omphacitic clinopyroxenes of upper mantle to lower crustal origin beneath the Siberian platform
- Structural variations induced by difference of the inert pair effect in the stibnite-bismuthinite solid solution series (Sb,Bi)2S3
- Hydrogen solubility and speciation in natural, gem-quality chromian diopside
- Ultrastructure, aggregation-state, and crystal growth of biogenic nanocrystalline sphalerite and wurtzite
- Impactite from Henbury, Australia
- Neutron and synchrotron X-ray diffraction study of the structures and dehydration behaviors of ramsdellite and “groutellite”
- Hydrothermal synthesis and crystal chemistry of the new strontium uranyl selenites, Sr[(UO2)3(SeO3)2O2]⋅4H2O and Sr[UO2(SeO3)2]
- Study of cation order-disorder in MgAl2O4spinel by in situ neutron diffraction up to 1600 K and 3.2 GPa
- Magnetic granulometry from equilibrium magnetization measurements: Mineral magnetometry of superparamagnetic particles and application to synthetic ferrihydrites
- Hydroxide in kyanite: A quantitative determination of the absolute amount and calibration of the IR spectrum
- Analysis of uranyl-bearing phases by EXAFS spectroscopy: Interferences, multiple scattering, accuracy of structural parameters, and spectral differences
- X-ray diffraction evidence for a monoclinic form of stibnite, Sb2S3, below 290 K
- Sulfur species at chalcopyrite (CuFeS2) fracture surfaces
- Dehydration and rehydration process in boggsite: An in situ X-ray single-crystal study
- Empressite, AgTe, from the Empress-Josephine mine, Colorado, U.S.A.: Composition, physical properties, and determination of the crystal structure
- Correlation of pH-dependent surface interaction forces to amino acid adsorption: Implications for the origin of life
- A near-infrared spectroscopic study of hydroxyl in natural chondrodite
- High-pressure elasticity of a natural magnetite crystal
- Isotopic and chemical alteration of zircon by metamorphic fluids: U-Pb age depth-profiling of zircon crystals from Barrowʼs garnet zone, northeast Scotland
- A novel approach to determine high-pressure high-temperature fluid and melt compositions using diamond-trap experiments
- Lindbergite, a new Mn oxalate dihydrate from Boca Rica mine, Galiléia, Minas Gerais, Brazil, and other occurrences
- Pyrophyllite dehydroxylation process by First Principles calculations
- Plagioclase from planetary basalts: Chemical signatures that reflect planetary volatile budgets, oxygen fugacity, and styles of igneous differentiation
- The structure of the manganese oxide on the sheath of the bacterium Leptothrix discophora: An XAFS study
- An X-ray Rietveld study of piemontite on the join Ca2Al3Si3O12(OH)–Ca2Mn33+Si3O12(OH) formed by hydrothermal synthesis
- Raman spectroscopy of basic copper(II) and some complex copper(II) sulfate minerals: Implications for hydrogen bonding
- Incorporation of sodium into the chlorite structure: the crystal structure of glagolevite, Na(Mg,Al)6[Si3AlO10](OH,O)8
- Cation disorder in dolomite, CaMg(CO3)2, and its influence on the aragonite + magnesite ↔ dolomite reaction boundary
