Alteration of hedenbergite,diopsite(both natural and synthetie),and andradite bas been experimentally studied at 300-800℃ and 200-2,000 atm.The alteration in various degree has been noted for all these minerals in so...Alteration of hedenbergite,diopsite(both natural and synthetie),and andradite bas been experimentally studied at 300-800℃ and 200-2,000 atm.The alteration in various degree has been noted for all these minerals in solutions over a wide range of pH values.It has been shown that,hedenbergite is the most unstable,while andradite the most stable,A preliminary disenssion is given in the light of experimental resalts and pertinent geological environments.展开更多
借助XRD,DTA和IR等分析手段,研究了CaO/SiO2对微晶玻璃析晶行为的影响。结果表明:随着CaO/SiO2的增加,微晶玻璃的晶体形态由片状向条状转变,晶体尺寸减小;晶相为透辉石和钙铁辉石;在900～1 100 cm 1内,微晶玻璃的吸收带向低频方向移动,...借助XRD,DTA和IR等分析手段,研究了CaO/SiO2对微晶玻璃析晶行为的影响。结果表明:随着CaO/SiO2的增加,微晶玻璃的晶体形态由片状向条状转变,晶体尺寸减小;晶相为透辉石和钙铁辉石;在900～1 100 cm 1内,微晶玻璃的吸收带向低频方向移动,且不断有新的谱带出现,与透辉石和钙铁辉石的谱带具有相似的结构。展开更多
文摘Alteration of hedenbergite,diopsite(both natural and synthetie),and andradite bas been experimentally studied at 300-800℃ and 200-2,000 atm.The alteration in various degree has been noted for all these minerals in solutions over a wide range of pH values.It has been shown that,hedenbergite is the most unstable,while andradite the most stable,A preliminary disenssion is given in the light of experimental resalts and pertinent geological environments.
文摘借助XRD,DTA和IR等分析手段,研究了CaO/SiO2对微晶玻璃析晶行为的影响。结果表明:随着CaO/SiO2的增加,微晶玻璃的晶体形态由片状向条状转变,晶体尺寸减小;晶相为透辉石和钙铁辉石;在900～1 100 cm 1内,微晶玻璃的吸收带向低频方向移动,且不断有新的谱带出现,与透辉石和钙铁辉石的谱带具有相似的结构。
