Browsing ELibrary by Subject "TALC"

Now showing items 1-7 of 7

A NEW NI-RICH STEVENSITE FROM THE OPHIOLITE COMPLEX OF OTHRYS, CENTRAL GREECE

Christidis G.E.; Mitsis I. (2006)

The first occurrence of Ni-rich stevensite found in the ophiolite complex of Othrys, Central Greece is described. The stevensite, which develops in cracks in a host serpentinite, formed at the expense of serpentine. Two ...
AB INITIO QUANTUM-MECHANICAL MODELING OF PYROPHYLLITE [AL2 SI4O10(OH)2] AND TALC [MG3 SI4O10(OH)2] SURFACES

Bruno M.; Prencipe M.; Valdre' G. (2006)

Bulk and slab geometry optimizations and calculations of the electrostatic potential at the surface of both pyrophyllite [Al2Si4O10(OH)2] and talc [Mg3Si4O10(OH)2] were performed at Hartree-Fock and DFT level. In both ...
DEHYDROXYLATION, PROTON MIGRATION, AND STRUCTURAL CHANGES IN HEATED TALC: AN INFRARED SPECTROSCOPIC STUDY

Zhang M.; Hui Q.; Lou X.-J.; Redfern S.A.T.; Salje E.K.H.; Tarantino S.C. (2006)

The high-temperature dehydroxylation and structural change of talc, Mg3(Si2O5)2(OH)2, has been investigated in detail using infrared (IR) spectroscopy. The data (in the region of 20-12000 cm-1) on quenched samples show ...
EXPERIMENTAL DETERMINATION OF ELASTIC PROPERTIES OF TALC TO 800°C, 0.5 GPA; CALCULATIONS OF THE EFFECT ON HYDRATED PERIDOTITE, AND IMPLICATIONS FOR COLD SUBDUCTION ZONES

Bailey E.; Holloway J.R. (2000)

We have measured compressional wave velocity (VP) in talc as a function of temperature at 0.5 GPa. VP falls from 5.27+/-0.23 km s-1 at 25°C to 4.35+/-0.15 km s-1 at 800°C. Combining these results with a previously published ...
FINE-PROBING THE CRYSTAL-CHEMISTRY OF TALC BY MAS-NMR SPECTROSCOPY

Martini F.; De Parseval P.; Salvi S.; Ferrage E.; Petit S.; Delmotte L.; Ferret J.; Arseguel D. (2006)

Magic-Angle-Spinning Nuclear Magnetic Resonance (MAS-NMR) spectroscopy was used to probe the crystallographic environment of Si, Al, F and H in 14 natural talc samples originating from different localities and containing ...
MODELLING PHASE–ASSEMBLAGE DIAGRAMS FOR MAGNESIAN METAPELITES IN THE SYSTEM K2O–FEO–MGO–AL2O3–SIO2–H2O: GEODYNAMIC CONSEQUENCES FOR THE MONTE ROSA NAPPE, WESTERN ALPS

Le Bayon R.; De Capitani C.; Frey M. (2006)

Magnesian metamorphic rocks with metapelitic mineral assemblage and composition are of great interest in metamorphic petrology for their ability to constrain P–T conditions in terranes where metamorphism is not easily ...
PREPARATION OF POROUS MATERIAL FROM TALC BY MECHANOCHEMICAL TREATMENT AND SUBSEQUENT LEACHING

Yang H.; Du C.; Hu Y.; Jin S.; Yang W.; Tang A.; Avvakumov E.G. (2006)

Synthesis of porous silica via mechanochemical treatment of talc and subsequent acid leaching was investigated by X-ray diffraction (XRD), Fourier transformation infrared spectroscopy (FTIR), scanning electron microscopy ...

Browsing ELibrary by Subject "TALC"

Browsing ELibrary by Subject "TALC"

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