LINK<\/strong><\/a><\/p>\n\n\n\n“Wangdaodeite, the shock\u2010induced lithium niobate\u2013structured polymorph of ilmenite, was found in the Suizhou L6 chondrite. It occurs as small irregular particles (2\u201320 \u03bcm in size) inside or adjacent to the shock melt veins. Wangdaodeite coexists in veins with ringwoodite, majorite, and xieite. The chemical formula of wangdaodeite is FeTiO3. The empirical formula is: (Fe0.85Mg0.10Mn0.05)\u03a31.00Ti0.99O3, which is similar to that of its host ilmenite. The Raman spectra of wangdaodeite display the bands at 174\u2013179, 273\u2013277, 560\u2013567, 738\u2013743 cm\u22121, which are different to those for ilmenite. TEM images show that ilmenite is composed of polysynthetic\u2010twinned crystals while wangdaodeite is composed of random\u2010oriented nanometric domains sized 20\u201350 nm. Electron diffraction established wangdaodeite to be trigonal with the lithium niobate structure. Cell parameters are: a = 5.13(1) \u00c5, c = 13.78(1) \u00c5; c\/a = 2.69; space group R3c; calculated density = 4.72 g cm\u22123. The P\u2013T conditions for formation of wangdaodeite were estimated to be 20\u201324 GPa and >1200 \u00b0C. The mineral name was approved by the Commission on New Minerals, Nomenclature, and Classification of the International Mineralogical Association (IMA 2016\u2010007). The name is for Daode Wang, Professor at the Guangzhou Institute of Geochemistry, Chinese Academy of Sciences.”<\/p>\n","protected":false},"excerpt":{"rendered":"
Xiande Xie, Xiangping Gu, Hexiong Yang, Ming Chen, Kai Li Meteoritics & Planetary Science First Published: 19 December 2019 LINK “Wangdaodeite, the shock\u2010induced lithium niobate\u2013structured polymorph of ilmenite, was found in the Suizhou L6 chondrite….<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23,7],"tags":[3188,3743,1807,1274,5352],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/20976"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=20976"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/20976\/revisions"}],"predecessor-version":[{"id":20977,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/20976\/revisions\/20977"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=20976"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=20976"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=20976"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}