IGGCAS OpenIR  > 岩石圈演化国家重点实验室
Vibrational Investigation of Pressure-Induced Phase Transitions of Hydroxycarbonate Malachite Cu-2(CO3)(OH)(2)
Gao, Jing1,2; Yuan, Xueyin3
2020-03-01
Source PublicationMINERALS
Volume10Issue:3Pages:14
AbstractMalachite Cu-2(CO3)(OH)(2) is a common hydroxycarbonate that contains about 15.3 wt % H2O. Its structural chemistry sheds light on other hydroxyl minerals that play a role in the water recycling of our planet. Here using Raman and infrared spectroscopy measurements, we studied the vibrational characteristics and structural evolution of malachite in a diamond anvil cell at room temperature (25 degrees C) up to 29 GPa. Three types of vibrations were analyzed including Cu-O vibrations (300-600 cm(-1)), [CO3](2-) vibrations (700-1600 cm(-1)), and O-H stretches (3200-3500 cm(-1)). We present novel observations of mode discontinuities at pressures of 7, 15, and 23 GPa, suggesting three phase transitions, respectively. First, pressure has a great effect on the degree of deformation of the [CuO6] octahedron, as is manifested by the various shifting slopes of the Cu-O modes. [CuO6] deformation results in a rotation of the structural unit and accordingly a phase transition at 7 GPa. Upon compression to 15 GPa, the O-H bands redshift progressively with significant broadness, indicative of an enhancement of the hydrogen bonding, a shortening of the OO distance, and possibly somewhat of a desymmetrization of the O-HO bond. O-H mode hardening is identified above 15 GPa coupled with a growth in the amplitude of the lower-energy bands. These observations can be interpreted as some reorientation or reordering of the hydrogen bonding. A further increment of pressure leads to a change in the overall compression mechanism of the structure at 23 GPa, which is characterized by the blueshift of the O-H stretches and the softening of the O-C-O in-plane bending bands. The hydrogen bonding weakens due to a substantial enhancement of the Cu-H repulsion effect, and the OO bond length shows no further shortening. In addition, the change in the local geometry of hydrogen is also induced by the softening of the [CO3](2-) units. In this regard we may expect malachite and other analogous hydroxyl minerals as capable of transporting water downward towards the Earth's transition zone (23 GPa). Our results furnish our knowledge on the chemistry of hydrogen bonding at mantle conditions and open a new window in understanding the synergistic relations of water and carbon recycling in the deep Earth.
Keywordhydroxycarbonate hydrogen bonding phase transition diamond anvil cell
DOI10.3390/min10030277
Funding OrganizationChina Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China
WOS KeywordH STRETCHING FREQUENCIES ; WATER TRANSPORT ; RAMAN-SPECTRA ; LOWER MANTLE ; STABILITY ; AZURITE ; CU2(OH)2CO3 ; MAGNESITE ; DOLOMITE ; SILICATE
Language英语
Funding ProjectChina Postdoctoral Science Foundation[2018M640179] ; China Postdoctoral Science Foundation[2019T120132] ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China
Funding OrganizationChina Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, China
WOS Research AreaMineralogy ; Mining & Mineral Processing
WOS SubjectMineralogy ; Mining & Mineral Processing
WOS IDWOS:000529217000074
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/96243
Collection岩石圈演化国家重点实验室
Corresponding AuthorGao, Jing; Yuan, Xueyin
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Inst Earth Sci, Beijing 100029, Peoples R China
3.Chinese Acad Geol Sci, Inst Mineral Resources, MNR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China
First Author AffilicationState Key Laboratory of Lithospheric Evolution;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationState Key Laboratory of Lithospheric Evolution;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Gao, Jing,Yuan, Xueyin. Vibrational Investigation of Pressure-Induced Phase Transitions of Hydroxycarbonate Malachite Cu-2(CO3)(OH)(2)[J]. MINERALS,2020,10(3):14.
APA Gao, Jing,&Yuan, Xueyin.(2020).Vibrational Investigation of Pressure-Induced Phase Transitions of Hydroxycarbonate Malachite Cu-2(CO3)(OH)(2).MINERALS,10(3),14.
MLA Gao, Jing,et al."Vibrational Investigation of Pressure-Induced Phase Transitions of Hydroxycarbonate Malachite Cu-2(CO3)(OH)(2)".MINERALS 10.3(2020):14.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Gao, Jing]'s Articles
[Yuan, Xueyin]'s Articles
Baidu academic
Similar articles in Baidu academic
[Gao, Jing]'s Articles
[Yuan, Xueyin]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Gao, Jing]'s Articles
[Yuan, Xueyin]'s Articles
Terms of Use
No data!
Social Bookmark/Share
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit Add to Technorati
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.