The research on morphology of mineral crystals in China includes classical goniometry of 100 minerals such as hsianghualite, orthobrannerite, jamesonite and bertrandite and surface microtopography of 20 minerals such ...The research on morphology of mineral crystals in China includes classical goniometry of 100 minerals such as hsianghualite, orthobrannerite, jamesonite and bertrandite and surface microtopography of 20 minerals such as wolframite and diamond, among which 5 new minerals and 34 uranium minerals were discovered and measured by Chinese mineralogists. These have enriched mineralogy and crystal morphology and strengthened the study of information of morphological genesis.展开更多
Hsianghualite (Ca 3 Li 2 [BeSiO 4 ] 3 F 2 , I 2 1 3) is the first new mineral discovered in China in 1958 and is very precious due to its rare occurrence in the Earth. Few studies have reported about hsianghualite dur...Hsianghualite (Ca 3 Li 2 [BeSiO 4 ] 3 F 2 , I 2 1 3) is the first new mineral discovered in China in 1958 and is very precious due to its rare occurrence in the Earth. Few studies have reported about hsianghualite during these years. The authors measured the complex morphology of hsianghualite and found a twin structure in hsianghualite crystal by electron backscattered diffraction (EBSD) technique. The pole figures were used to analyze the twin relationship. The twin law of hsianghualite is the twin plane {110}. This twin law is the same as that proposed by crystallographic theoretic analysis in the previous work. EBSD experi- mental study verified our theoretic analysis of the twin structure in the previous work. The twin structure in hsianghualite has never been reported since the discovery of this mineral in 1958.展开更多
文摘The research on morphology of mineral crystals in China includes classical goniometry of 100 minerals such as hsianghualite, orthobrannerite, jamesonite and bertrandite and surface microtopography of 20 minerals such as wolframite and diamond, among which 5 new minerals and 34 uranium minerals were discovered and measured by Chinese mineralogists. These have enriched mineralogy and crystal morphology and strengthened the study of information of morphological genesis.
基金supported by National Natural Science Foundation of China (Grant Nos. 40872040, 40472023)
文摘Hsianghualite (Ca 3 Li 2 [BeSiO 4 ] 3 F 2 , I 2 1 3) is the first new mineral discovered in China in 1958 and is very precious due to its rare occurrence in the Earth. Few studies have reported about hsianghualite during these years. The authors measured the complex morphology of hsianghualite and found a twin structure in hsianghualite crystal by electron backscattered diffraction (EBSD) technique. The pole figures were used to analyze the twin relationship. The twin law of hsianghualite is the twin plane {110}. This twin law is the same as that proposed by crystallographic theoretic analysis in the previous work. EBSD experi- mental study verified our theoretic analysis of the twin structure in the previous work. The twin structure in hsianghualite has never been reported since the discovery of this mineral in 1958.
