Dogan Meral
Department of Geological Engineering, Hacettepe University, Ankara, Turkey.
Scanning. 2012 Jan-Feb;34(1):37-42. doi: 10.1002/sca.20276. Epub 2011 Aug 22.
Air-collected erionite series minerals from Cappadocia region of Turkey were characterized quantitatively by using transmission electron microscopy (TEM) equipped with energy dispersive spectroscopy (EDS). Field emission scanning electron microscopy aided identification of fibrous minerals. Quantitative characterization guidelines for positive identification of erionites proposed by Dogan and Dogan (2008) was applied and the modified balance error formula (E%<10) and Mg-content test <0.80 were performed for each analysis. Erionite species computation showed that the mineral is erionite-K and a mean chemical formula is proposed based upon the TEM-EDS results. Among the 60 analyses, 11 passed E% test (18.3%), 33 passed Mg-content test (55.0%), and only 3 passed both E% and Mg-content tests (5.0%). This shows difficulty of quantitative characterization of the erionite series minerals. However, as erionite is the most carcinogenic mineral known and is classified by IARC as a Group-I (human) carcinogen, it requires special attention from the mineralogical community to help establish its true mineralogical properties. Quantitatively characterized erionite data are very scarce in literature. Correctly identified erionite mineral types will be useful to medical researchers in their search to find a possible cure for the deadly disease of mesothelioma.
利用配备能谱仪（EDS）的透射电子显微镜（TEM）对从土耳其卡帕多西亚地区空气收集的毛沸石系列矿物进行了定量表征。场发射扫描电子显微镜辅助鉴定纤维状矿物。应用了多安和多安（2008年）提出的毛沸石阳性鉴定定量表征指南，每次分析都进行了修正的平衡误差公式（E%<10）和镁含量测试<0.80。毛沸石种类计算表明该矿物为钾毛沸石，并根据TEM-EDS结果提出了平均化学式。在60次分析中，11次通过E%测试（18.3%），33次通过镁含量测试（55.0%），只有3次同时通过E%和镁含量测试（5.0%）。这表明毛沸石系列矿物的定量表征存在困难。然而，由于毛沸石是已知最具致癌性的矿物，被国际癌症研究机构列为I类（人类）致癌物，因此需要矿物学界给予特别关注，以帮助确定其真正的矿物学性质。文献中定量表征的毛沸石数据非常稀少。正确鉴定的毛沸石矿物类型将有助于医学研究人员寻找治疗致命疾病间皮瘤的可能方法。
