Article
Licensed
Unlicensed
Requires Authentication
Serpentine minerals discrimination by thermal analysis
-
Cecilia Viti
Published/Copyright:
April 2, 2015
Abstract
This paper reports a complete set of TG, DTG, and DTA data, coupled with emitted gas analysis, for well-constrained, almost pure serpentine samples. Serpentine dehydroxylation takes place between 550 and 800 °C, with DTG and DTA peak temperatures progressively decreasing from antigorite (720 and 715 °C, respectively) to lizardite (708 and 714 °C), polygonal serpentine (685 and 691 °C), and chrysotile (650 and 654 °C). Antigorite has an additional diagnostic signal at ~740-760 °C, always absent in the other serpentines, and dependent on antigorite superperiodicity (T shift of ~20 °C from 36 to 49 Å modulation wavelength). A sharp exothermic peak occurs at extremely constant temperatures (~820 °C), independently from the starting serpentine structure. The high-T mineral assemblage is always represented by forsterite and enstatite.
Based on the observed relationships between serpentine structures and DTG/DTA dehydroxylation temperatures, thermal analysis may represent a useful tool for serpentine identification, particularly in the case of natural massive samples where different varieties are mutually intermixed. The accurate definition of serpentine mineralogy would have obvious implications in both geological-petrological and health-related issues.
Received: 2009-8-4
Accepted: 2009-12-10
Published Online: 2015-4-2
Published in Print: 2010-4-1
© 2015 by Walter de Gruyter Berlin/Boston
You are currently not able to access this content.
You are currently not able to access this content.
Articles in the same Issue
- Fe site occupancy in magnetite-ulvöspinel solid solutions: A new approach using X-ray magnetic circular dichroism
- Discovery, mineral paragenesis, and origin of wadalite in a meteorite
- Cathodoluminescence microscopy and spectroscopy of synthetic ruby crystals grown by the optical floating zone technique
- Structural relaxation around Cr3+ and the red-green color change in the spinel (sensu stricto)-magnesiochromite (MgAl2O4-MgCr2O4) and gahnite-zincochromite (ZnAl2O4-ZnCr2O4) solid-solution series
- Recrystallization in fully metamict gadolinite from Ytterby (Sweden), annealed in air and studied by 57Fe Mössbauer spectroscopy
- Fantappièite, a new mineral of the cancrinite-sodalite group with a 33-layer stacking sequence: Occurrence and crystal structure
- Reinvestigation of the crystal structure of the zeolite gobbinsite: A single-crystal X-ray diffraction study
- Arsenic-rich fergusonite-beta-(Y) from Mount Cervandone (Western Alps, Italy): Crystal structure and genetic implications
- Crystal structure and low-temperature behavior of “disordered” thomsonite
- Cooling-induced crystallization of microlite crystals in two basaltic pumice clasts
- Crystal structure analyses of four tourmaline specimens from the Cleopatra’s Mines (Egypt) and Jabal Zalm (Saudi Arabia), and the role of Al in the tourmaline group
- Combined single-crystal X-ray and neutron powder diffraction structure analysis exemplified through full structure determinations of framework and layer beryllate minerals
- Olivine crystal size distributions in kimberlite
- Solubility of manganotantalite and manganocolumbite in pegmatitic melts
- The effect of silica on ferric/ferrous ratio in silicate melts: An experimental study using Mössbauer spectroscopy
- HRTEM investigation of trilling todorokite and nano-phase Mn-oxides in manganese dendrites
- Thermo-chemical and thermo-physical properties of the high-pressure phase anhydrous B (Mg14Si5O24): An ab-initio all-electron investigation
- The incommensurately modulated structures of natural natrite at 120 and 293 K from synchrotron X-ray data
- Sulfide oxidation observed using micro-Raman spectroscopy and micro-X-ray diffraction: The importance of water/rock ratios and pH conditions
- In situ measurements of plagioclase growth using SIMS depth profiles of 7Li/30Si: A means to acquire crystallization rates during short-duration decompression events
- Crystal chemistry of the MgAl2O4-MgMn2O4-MnMn2O4 system: Analysis of structural distortion in spinel- and hausmannite-type structures
- The effect of Al and water on the compressibility of diopside
- Geothermometric study of Mg-rich spinels from the Somma-Vesuvius volcanic complex (Naples, Italy)
- Serpentine minerals discrimination by thermal analysis
- A new type of cubic-stacked layer structure in anthoinite, AlWO3(OH)3
- Townendite, Na8ZrSi6O18, a new uranium-bearing lovozerite group mineral from the Ilímaussaq alkaline complex, Southern Greenland
- Letter. Pressure-induced transformations in kaolinite
- Letter. The crystal structure of gypsum-II determined by single-crystal synchrotron X-ray diffraction data
Articles in the same Issue
- Fe site occupancy in magnetite-ulvöspinel solid solutions: A new approach using X-ray magnetic circular dichroism
- Discovery, mineral paragenesis, and origin of wadalite in a meteorite
- Cathodoluminescence microscopy and spectroscopy of synthetic ruby crystals grown by the optical floating zone technique
- Structural relaxation around Cr3+ and the red-green color change in the spinel (sensu stricto)-magnesiochromite (MgAl2O4-MgCr2O4) and gahnite-zincochromite (ZnAl2O4-ZnCr2O4) solid-solution series
- Recrystallization in fully metamict gadolinite from Ytterby (Sweden), annealed in air and studied by 57Fe Mössbauer spectroscopy
- Fantappièite, a new mineral of the cancrinite-sodalite group with a 33-layer stacking sequence: Occurrence and crystal structure
- Reinvestigation of the crystal structure of the zeolite gobbinsite: A single-crystal X-ray diffraction study
- Arsenic-rich fergusonite-beta-(Y) from Mount Cervandone (Western Alps, Italy): Crystal structure and genetic implications
- Crystal structure and low-temperature behavior of “disordered” thomsonite
- Cooling-induced crystallization of microlite crystals in two basaltic pumice clasts
- Crystal structure analyses of four tourmaline specimens from the Cleopatra’s Mines (Egypt) and Jabal Zalm (Saudi Arabia), and the role of Al in the tourmaline group
- Combined single-crystal X-ray and neutron powder diffraction structure analysis exemplified through full structure determinations of framework and layer beryllate minerals
- Olivine crystal size distributions in kimberlite
- Solubility of manganotantalite and manganocolumbite in pegmatitic melts
- The effect of silica on ferric/ferrous ratio in silicate melts: An experimental study using Mössbauer spectroscopy
- HRTEM investigation of trilling todorokite and nano-phase Mn-oxides in manganese dendrites
- Thermo-chemical and thermo-physical properties of the high-pressure phase anhydrous B (Mg14Si5O24): An ab-initio all-electron investigation
- The incommensurately modulated structures of natural natrite at 120 and 293 K from synchrotron X-ray data
- Sulfide oxidation observed using micro-Raman spectroscopy and micro-X-ray diffraction: The importance of water/rock ratios and pH conditions
- In situ measurements of plagioclase growth using SIMS depth profiles of 7Li/30Si: A means to acquire crystallization rates during short-duration decompression events
- Crystal chemistry of the MgAl2O4-MgMn2O4-MnMn2O4 system: Analysis of structural distortion in spinel- and hausmannite-type structures
- The effect of Al and water on the compressibility of diopside
- Geothermometric study of Mg-rich spinels from the Somma-Vesuvius volcanic complex (Naples, Italy)
- Serpentine minerals discrimination by thermal analysis
- A new type of cubic-stacked layer structure in anthoinite, AlWO3(OH)3
- Townendite, Na8ZrSi6O18, a new uranium-bearing lovozerite group mineral from the Ilímaussaq alkaline complex, Southern Greenland
- Letter. Pressure-induced transformations in kaolinite
- Letter. The crystal structure of gypsum-II determined by single-crystal synchrotron X-ray diffraction data
