THERMAL TREATMENT INVESTIGATION OF NATURAL LIZARDITE AT THE ATMOSPHERIC PRESSURE, BASED ON XRD AND DTA/TG ANALYSIS METHODS

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DABIRI R.; KARIMI SHAHRAKI B.; MOLLAEI H.; GHAFFARI M.

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Journal: Iranian Journal of Crystallography and Mineralogy Year:2009 | Volume:17 | Issue:3 Page(s): 395-404

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Information Journal Paper

Title

THERMAL TREATMENT INVESTIGATION OF NATURAL LIZARDITE AT THE ATMOSPHERIC PRESSURE, BASED ON XRD AND DTA/TG ANALYSIS METHODS

Author(s)

DABIRI R. | KARIMI SHAHRAKI B. | MOLLAEI H. | GHAFFARI M. | Issue Writer Certificate

Keywords

LIZARDITEQ2

SERPENTINEQ2

THERMAL REACTIONQ3

XRDQ3

DTA-TGQ3

Abstract

Determination of stability limits, mineralogical changes and THERMAL REACTION of SERPENTINE minerals are very important for the investigation of magmatism, mechanism and depth of plates of subduction. During the subduction process, SERPENTINE (LIZARDITE) minerals will release their water due to THERMAL REACTIONs. This dehydration can play an important role in volcanism processes related to the subduction. In this study, SERPENTINE minerals (LIZARDITE) collected from the Neyriz Ophiolite Complex (NOC) were dehydrated under the constant atmospheric pressure. These mineralogical changes were determined by X-Ray diffraction and DTA-TG analyses methods. This study shows natural LIZARDITEs that heated for about one hour is stable up to 550°C. Dehydration reactions on LIZARDITE started at approximately between 100 to 150°C and dehydroxilation reactions started at approximately 550-690°C. As a result of THERMAL REACTION, the decomposition of LIZARDITE will take place and then changes in to olivine (forsterite). Crystallization of olivine (forsterite) will start at 600°C. This mineral is stable up to 700oC and then crystallization of enstatite will start at 700°C. During this dehydration and crystallization reaction, amorphous processes will start at 600°C and some amount water and silica will release.

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APA: Copy

DABIRI, R., KARIMI SHAHRAKI, B., MOLLAEI, H., & GHAFFARI, M.. (2009). THERMAL TREATMENT INVESTIGATION OF NATURAL LIZARDITE AT THE ATMOSPHERIC PRESSURE, BASED ON XRD AND DTA/TG ANALYSIS METHODS. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 17(3), 395-404. SID. https://sid.ir/paper/4177/en

Vancouver: Copy

DABIRI R., KARIMI SHAHRAKI B., MOLLAEI H., GHAFFARI M.. THERMAL TREATMENT INVESTIGATION OF NATURAL LIZARDITE AT THE ATMOSPHERIC PRESSURE, BASED ON XRD AND DTA/TG ANALYSIS METHODS. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY[Internet]. 2009;17(3):395-404. Available from: https://sid.ir/paper/4177/en

IEEE: Copy

R. DABIRI, B. KARIMI SHAHRAKI, H. MOLLAEI, and M. GHAFFARI, “THERMAL TREATMENT INVESTIGATION OF NATURAL LIZARDITE AT THE ATMOSPHERIC PRESSURE, BASED ON XRD AND DTA/TG ANALYSIS METHODS,” IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, vol. 17, no. 3, pp. 395–404, 2009, [Online]. Available: https://sid.ir/paper/4177/en

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