A piece of new HRTEM lattice image evidence for P2_1ca hypersthene of Chengde, China

• 作 者: 薛纪越 罗谷风 王启明 赵冀徽
• 机 构: Department of Earth Sciences, Nanjing University, Nanjing 210093, China,Department of Earth Sciences
• 出 处: Chinese Science Bulletin
• 发表日期: 1996年12期
• 关键词: lunar HRTEM Chengde ortho piece octahedral chains rock tetrahedral periodicity

Traditionally the space group of orthopyroxenes is catalogued into Pbca.Nevertheless,in 1974,Smyth found out that the bronzite from one lunar rock is of P2_1ca based on thepresence of the 0 kl diffractions with k-odd.Sequently it was reported that the ortho-pyroxenes from certain meteorites and a lunar soil are of P2_1ca.Some mineralogists

Traditionally the space group of orthopyroxenes is cataloged into Pbca.Nevertheless, in 1974, Smyth found out that the bronzite from one lunar rock is of P2_1ca based on the presence of the 0 kl diffractions with k-odd. Sequently it was reported that the ortho- pyroxenes from certain meteorites and a lunar soil are of P2_1ca.Some mineralogists