{"title":"一种未知的Ni-Al水硅酸盐","authors":"Z. Maksimović","doi":"10.1556/AGEOL.46.2003.3.6","DOIUrl":null,"url":null,"abstract":"An \"unknown Ni-Al hydrosilicate\" was found in the karstic nickel deposits in the localities Ba and Takovo in Serbia, and Aghios Ioannis in Greece. It occurs in fine-grained bluish-green and green aggregates with takovite and hydrated halloysite. It is an epigenetic product in the karstic nickel deposit. X-ray powder diffraction (XRPD) data are indexed with a monoclinic unit cell, a = 8.524 (4), b = 7.490 (3), c = 24.214 (6) A, b = 104.55 (6)°, V = 1545.9 A3. The thermal study has shown a characteristic dehydroxylation effect at 450 °C, which distinguishes this mineral from takovite and halloysite. The infra-red technique is very sensitive for the detection of the \"unknown Ni-Al hydrosilicate\": an absorption band between 1250 cm-1 and 1270 cm-1 is very characteristic for this mineral. From chemical analyses of the admixture of this mineral and hydrated halloysite in different proportions from the Aghios Ioannis deposit in Greece, after removal of impurities, the calculated formula is close to Ni2.00 Al2.00...","PeriodicalId":107929,"journal":{"name":"Acta Geologica Hungarica","volume":"22 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"An unknown Ni-Al hydrosilicate\",\"authors\":\"Z. Maksimović\",\"doi\":\"10.1556/AGEOL.46.2003.3.6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An \\\"unknown Ni-Al hydrosilicate\\\" was found in the karstic nickel deposits in the localities Ba and Takovo in Serbia, and Aghios Ioannis in Greece. It occurs in fine-grained bluish-green and green aggregates with takovite and hydrated halloysite. It is an epigenetic product in the karstic nickel deposit. X-ray powder diffraction (XRPD) data are indexed with a monoclinic unit cell, a = 8.524 (4), b = 7.490 (3), c = 24.214 (6) A, b = 104.55 (6)°, V = 1545.9 A3. The thermal study has shown a characteristic dehydroxylation effect at 450 °C, which distinguishes this mineral from takovite and halloysite. The infra-red technique is very sensitive for the detection of the \\\"unknown Ni-Al hydrosilicate\\\": an absorption band between 1250 cm-1 and 1270 cm-1 is very characteristic for this mineral. From chemical analyses of the admixture of this mineral and hydrated halloysite in different proportions from the Aghios Ioannis deposit in Greece, after removal of impurities, the calculated formula is close to Ni2.00 Al2.00...\",\"PeriodicalId\":107929,\"journal\":{\"name\":\"Acta Geologica Hungarica\",\"volume\":\"22 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2003-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Geologica Hungarica\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1556/AGEOL.46.2003.3.6\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Geologica Hungarica","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1556/AGEOL.46.2003.3.6","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
摘要
在塞尔维亚Ba和Takovo地区以及希腊Aghios Ioannis地区的岩溶镍矿床中发现了一种“未知的Ni-Al水硅酸盐”。它以细粒蓝绿色和绿色的聚集体与takovite和水合高岭土。它是岩溶型镍矿床的表生产物。x射线粉末衍射(XRPD)数据用单斜晶胞索引，a = 8.524 (4)， b = 7.490 (3)， c = 24.214 (6) a, b = 104.55(6)°，V = 1545.9 A3。热研究表明，该矿物在450°C时具有典型的脱羟基作用，这是该矿物与takovite和高岭土的区别。红外技术对于检测“未知的Ni-Al水硅酸盐”非常敏感:1250 cm-1和1270 cm-1之间的吸收带是这种矿物的特征。对希腊Aghios Ioannis矿床中该矿物与不同比例水合高岭土的混合物进行化学分析，除去杂质后，计算公式接近Ni2.00 Al2.00。
An "unknown Ni-Al hydrosilicate" was found in the karstic nickel deposits in the localities Ba and Takovo in Serbia, and Aghios Ioannis in Greece. It occurs in fine-grained bluish-green and green aggregates with takovite and hydrated halloysite. It is an epigenetic product in the karstic nickel deposit. X-ray powder diffraction (XRPD) data are indexed with a monoclinic unit cell, a = 8.524 (4), b = 7.490 (3), c = 24.214 (6) A, b = 104.55 (6)°, V = 1545.9 A3. The thermal study has shown a characteristic dehydroxylation effect at 450 °C, which distinguishes this mineral from takovite and halloysite. The infra-red technique is very sensitive for the detection of the "unknown Ni-Al hydrosilicate": an absorption band between 1250 cm-1 and 1270 cm-1 is very characteristic for this mineral. From chemical analyses of the admixture of this mineral and hydrated halloysite in different proportions from the Aghios Ioannis deposit in Greece, after removal of impurities, the calculated formula is close to Ni2.00 Al2.00...
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