Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.matchemphys.2019.02.048 |
Investigation of silica polymorphs stratified in siliceous geode using FTIR and XRD methods | |
Awadh, Salih Muhammad1; Yaseen, Zaher Mundher2 | |
通讯作者 | Yaseen, Zaher Mundher |
来源期刊 | MATERIALS CHEMISTRY AND PHYSICS
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ISSN | 0254-0584 |
EISSN | 1879-3312 |
出版年 | 2019 |
卷号 | 228页码:45-50 |
英文摘要 | The study aims to differentiate the silica forms stratified in the siliceous geodes using infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The water content (total water, H2Omol and Si-OH) in SiO2 center dot nH(2)O forms are used as the fingerprint for the different varieties of the silica morphs. For this reason, an irregular botryoidal spherical shape siliceous geode formed from alternative silica forms collected from Early-Late Eocene carbonate sediments of the Ratga Formation located in the Western Desert of Iraq were mineralogically investigated. The FTIR and XRD as authoritative tools that have been used together with the water content to enhance the distinction between crystalline and non-crystalline silica forms. Quartzine, quartz, chalcedony opal-A, opal-C, and opal-CT have been identified in different layers of geode in addition to calcite lining the geode center. |
英文关键词 | Geode Silica form Spectroscopy Silanol Ratga Formation |
类型 | Article |
语种 | 英语 |
国家 | Iraq ; Vietnam |
收录类别 | SCI-E |
WOS记录号 | WOS:000468252700007 |
WOS关键词 | OPAL-C ; MICROCRYSTALLINE ; CRISTOBALITE ; SPECTRA ; NOMENCLATURE ; CHALCEDONY ; TRIDYMITE ; MINERALS |
WOS类目 | Materials Science, Multidisciplinary |
WOS研究方向 | Materials Science |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/217557 |
作者单位 | 1.Univ Baghdad, Coll Sci, Dept Geol, Baghdad, Iraq; 2.Ton Duc Thang Univ, Fac Civil Engn, Sustainable Dev Civil Engn Res Grp, Ho Chi Minh City, Vietnam |
推荐引用方式 GB/T 7714 | Awadh, Salih Muhammad,Yaseen, Zaher Mundher. Investigation of silica polymorphs stratified in siliceous geode using FTIR and XRD methods[J],2019,228:45-50. |
APA | Awadh, Salih Muhammad,&Yaseen, Zaher Mundher.(2019).Investigation of silica polymorphs stratified in siliceous geode using FTIR and XRD methods.MATERIALS CHEMISTRY AND PHYSICS,228,45-50. |
MLA | Awadh, Salih Muhammad,et al."Investigation of silica polymorphs stratified in siliceous geode using FTIR and XRD methods".MATERIALS CHEMISTRY AND PHYSICS 228(2019):45-50. |
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