每日科技名词|蒙脱石
来源:全国科学技术名词审定委员会
蒙脱石
montmorillonite
定义:化学式为(Na,Ca)(Al,Mg,Fe)2[(Si,Al)4O10](OH)2·nH2O,晶体属单斜晶系的层状硅酸盐矿物。是冶金领域的重要矿物原料。
学科:材料科学技术_天然材料 _矿物
相关名词:类质同象 硅酸盐 黏土岩
蒙脱石是一种含水的层状铝硅酸矿物,因其最初发现的产地是法国的蒙脱(Montmorillon)而得名。蒙脱石的片层尺度为纳米级,这种天然的独特结构使它在制备纳米复合材料中具有非常重要的作用。蒙脱石晶体的类质同象种类多,使之化学成分复杂、变化大。其晶体结构被普遍接受,特点是二层硅氧四面体晶体片与其中的铝氧八面体晶体片相结合形成晶层,构成2比1型结构。晶层具有水分子和可交换的阳离子。
蒙脱石族矿物具有离子交换性、吸水性、膨胀性、黏结性、吸附性等一系列很有价值的特性。
根据层间可交换阳离子的种类、含量不同,蒙脱石可分为钠基蒙脱石(碱性土)、钙基蒙脱石(碱土性土)和天然漂白土(酸性土)。
自然界中的蒙脱石都是成分极为复杂的伴生矿物,经过选矿和后处理等整套工艺才可以使用。蒙脱土矿床的鉴别通常使用X射线和差热等方法。蒙脱石矿产在国内的23个省区有分布,大型矿床有20多个,矿床多集中在东北三省及新疆、甘肃、广西等省区[OK] https://t.cn/A662bkR3
来源:全国科学技术名词审定委员会
蒙脱石
montmorillonite
定义:化学式为(Na,Ca)(Al,Mg,Fe)2[(Si,Al)4O10](OH)2·nH2O,晶体属单斜晶系的层状硅酸盐矿物。是冶金领域的重要矿物原料。
学科:材料科学技术_天然材料 _矿物
相关名词:类质同象 硅酸盐 黏土岩
蒙脱石是一种含水的层状铝硅酸矿物,因其最初发现的产地是法国的蒙脱(Montmorillon)而得名。蒙脱石的片层尺度为纳米级,这种天然的独特结构使它在制备纳米复合材料中具有非常重要的作用。蒙脱石晶体的类质同象种类多,使之化学成分复杂、变化大。其晶体结构被普遍接受,特点是二层硅氧四面体晶体片与其中的铝氧八面体晶体片相结合形成晶层,构成2比1型结构。晶层具有水分子和可交换的阳离子。
蒙脱石族矿物具有离子交换性、吸水性、膨胀性、黏结性、吸附性等一系列很有价值的特性。
根据层间可交换阳离子的种类、含量不同,蒙脱石可分为钠基蒙脱石(碱性土)、钙基蒙脱石(碱土性土)和天然漂白土(酸性土)。
自然界中的蒙脱石都是成分极为复杂的伴生矿物,经过选矿和后处理等整套工艺才可以使用。蒙脱土矿床的鉴别通常使用X射线和差热等方法。蒙脱石矿产在国内的23个省区有分布,大型矿床有20多个,矿床多集中在东北三省及新疆、甘肃、广西等省区[OK] https://t.cn/A662bkR3
Not sure if you know this But when we first met. I got so nervous, I couldn't speak. In that very moment I found the one and
my life had found this missing piece. So as long as I live. I love you Will have and hold you You look so beautiful in white And from now to my very last breath This day I'll cherish
You look so beautiful in white Tonight
What we have is timeless My love is endless And with this scream I Say to the world
You're my every reason you're all that I believe in
With all my heart I mean every word So as long as I live I love you Will have and hold you You look so beautiful in white And from now to my very last breath This day I'll cherish
You look so beautiful in white
Tonight oooh oh
You look so beautiful in white
Na nanana So beautiful in white
Tonight
And if our daughter is what our future holds
I hope she has your eyes Finds love like you and I did Yeah, if she falls in love ,I will let her go
I'll walk her down the aisle She looks so beautiful in white You look so beautiful in white So as long as I live I love you Will have and hold you You look so beautiful in white And from now to my very last breath This day I'll cherish
You look so beautiful in white
Tonight
You look so beautiful in white
Tonight
my life had found this missing piece. So as long as I live. I love you Will have and hold you You look so beautiful in white And from now to my very last breath This day I'll cherish
You look so beautiful in white Tonight
What we have is timeless My love is endless And with this scream I Say to the world
You're my every reason you're all that I believe in
With all my heart I mean every word So as long as I live I love you Will have and hold you You look so beautiful in white And from now to my very last breath This day I'll cherish
You look so beautiful in white
Tonight oooh oh
You look so beautiful in white
Na nanana So beautiful in white
Tonight
And if our daughter is what our future holds
I hope she has your eyes Finds love like you and I did Yeah, if she falls in love ,I will let her go
I'll walk her down the aisle She looks so beautiful in white You look so beautiful in white So as long as I live I love you Will have and hold you You look so beautiful in white And from now to my very last breath This day I'll cherish
You look so beautiful in white
Tonight
You look so beautiful in white
Tonight
#电气石#
tourmaline 是电气石族矿物的总称。化学成分较复杂,是以含硼为特征的铝、钠、铁、镁、锂的环状结构硅酸盐矿物。类质同象发育,主要由以下三种端员组分构成:黑电气石NaFe3Al6[Si6O18](BO3)3(OH)4,镁电气石NaMg3Al6[Si6O18](BO3)3(OH)4,锂电气石Na(Li,Al)3Al6[Si6O18](BO3)3(OH)4,三方晶系。晶体呈柱状。柱面具纵纹,柱体横切面呈弧线三角形;也常呈放射状、针状或柱状集合体。颜色因成分不同而异,一般说来,黑电气石通常为黑色,镁电气石呈褐色,锂电气石则为玫瑰红至红色或蓝绿色;有时在一个晶体的两端,或晶体的中心与外围部分,呈现不同的颜色。玻璃光泽。硬度7-7.5。比重2.9—3.2。具热电性和压电性。主要产于花岗岩、花岗伟晶岩以及云英岩和石英脉中,也见于变质岩和砂矿中。色泽优美者俗称碧玺,可作为宝石。
tourmaline 是电气石族矿物的总称。化学成分较复杂,是以含硼为特征的铝、钠、铁、镁、锂的环状结构硅酸盐矿物。类质同象发育,主要由以下三种端员组分构成:黑电气石NaFe3Al6[Si6O18](BO3)3(OH)4,镁电气石NaMg3Al6[Si6O18](BO3)3(OH)4,锂电气石Na(Li,Al)3Al6[Si6O18](BO3)3(OH)4,三方晶系。晶体呈柱状。柱面具纵纹,柱体横切面呈弧线三角形;也常呈放射状、针状或柱状集合体。颜色因成分不同而异,一般说来,黑电气石通常为黑色,镁电气石呈褐色,锂电气石则为玫瑰红至红色或蓝绿色;有时在一个晶体的两端,或晶体的中心与外围部分,呈现不同的颜色。玻璃光泽。硬度7-7.5。比重2.9—3.2。具热电性和压电性。主要产于花岗岩、花岗伟晶岩以及云英岩和石英脉中,也见于变质岩和砂矿中。色泽优美者俗称碧玺,可作为宝石。
✋热门推荐