红柱石 外部链接 注释 导航菜单Mineral galleriesWebmineralMindat w/ locationsInternational Colored Gem Association: Anadalusite原始内容

岩石含铝矿物矽酸鹽礦物宝石


硅铝矿物化学锰铁晶体菊花颜色白色红色褐色玻璃硬度比重变质岩片岩材料宝石西班牙安达露西亚欧洲




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红柱石

基本資料
類別
矽酸鹽
化學式
Al2SiO5
性質
顏色
灰白色、肉红色或褐色
晶系
斜方晶系
斷口
參差狀至次貝殼狀
硬度
6.5 - 7.5
光澤
玻璃光澤
條痕
白色
比重
3.13-3.16
折射率
nα = 1.629 - 1.640 nβ = 1.633 - 1.644 nγ = 1.638 - 1.650
雙折射
+0.009 - 0.010

红柱石(英文：andalusite)是一种硅酸铝矿物，其化学成分为Al2SiO5。其中含Al2O3为63.1%，含SiO2为36.9%，有时也含有锰、铁等杂质。


红柱石晶体为斜方晶系，呈柱状，横截面接近正方形，集合体为粒状或放射状，也有形似菊花的为菊花石，颜色一般为灰白色、肉红色或褐色，具有玻璃光泽，硬度为6.5-7.5，比重为3.13-3.16。


红柱石为变质岩产物，多存在于片岩中。


红柱石在1380℃时会分解为富铝红柱石，是一种高级的耐火材料，色泽透明艳丽的红柱石可作为饰品，是一种宝石[1]。


红柱石在1789年第一次在西班牙的安达露西亚正式公开发布，所以在欧洲文字中被称为“安达露西亚石”。



外部链接


  • Mineral galleries

  • Webmineral

  • Mindat w/ locations

  • https://web.archive.org/web/20060717224731/http://www.gemstone.org/gem-by-gem/english/andalusite.html


注释



  1. ^ International Colored Gem Association: Anadalusite. [2006-07-13]. （原始内容存档于2006-07-17）. 







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