CAJ | 학술논문

采用X射线粉末衍射（XRD）、扫描电子显微镜（SEM）、热重分析（TG-DTG）及激光诱导离解光谱（LIBS）等分析方法对一种红色砭石的矿物学特征进行了深入的研究。XRD分析表明，红色砭石主要由白云石组成，并含有少量石英和方解石及微量云母、正长石和赤铁矿。SEM结果显示，砭石中的矿物颗粒大多为集合体，粒径大多集中在1～5μm之间，表面光滑程度有所不同。红色砭石在650-850℃范围内出现一个单失重峰，为白云石的分解形成，类质同象或者杂质矿物的存在导致白云石两阶段的分解同步完成。红色砭石的颜色可能与赤铁矿和正长石微晶在砭石中的均匀分布有关。
채용X사선분말연사（XRD）、소묘전자현미경（SEM）、열중분석（TG-DTG）급격광유도리해광보（LIBS）등분석방법대일충홍색폄석적광물학특정진행료심입적연구。XRD분석표명，홍색폄석주요유백운석조성，병함유소량석영화방해석급미량운모、정장석화적철광。SEM결과현시，폄석중적광물과립대다위집합체，립경대다집중재1～5μm지간，표면광활정도유소불동。홍색폄석재650-850℃범위내출현일개단실중봉，위백운석적분해형성，류질동상혹자잡질광물적존재도치백운석량계단적분해동보완성。홍색폄석적안색가능여적철광화정장석미정재폄석중적균균분포유관。
This paper investigates the mineralogical characteristics of a kind of red stone needle by using X-ray diffraction （XRD）, scanning electron microscopy （SEM）, thermogravimetric analysis （TG-DTG） and laser induced breakdown spectroscopy （LIBS）. The XRD result shows that the red stone needle is mainly composed of dolomite, containing minor quartz and calcite, and trace mica, orthoclase and hematite. SEM result indicates that mineral aggregates dominate in the red stone needle with their grain size ranging from 1μm to 5 μm and different degrees of smoothness on their surfaces. A single weightlessness peak occurs between 650 ℃ and 850℃, which should be attributed to the thermal decomposition of dolomite and the occurrence of isomorphism or foreign minerals leading to the simultaneous accomplishment of the two-stage decompositions. The coloration might result from the average distribution of hematite and orthoclase in the red stone needle.