MINERAL MOSSBAUER-SPECTROSCOPY - CORRELATIONS BETWEEN CHEMICAL-SHIFT AND QUADRUPOLE SPLITTING PARAMETERS
MINERAL MOSSBAUER-SPECTROSCOPY - CORRELATIONS BETWEEN CHEMICAL-SHIFT AND QUADRUPOLE SPLITTING PARAMETERS
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DOI：
10.1007/bf02064600
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发表时间：
1994-01-01
影响因子：
--
通讯作者：
BURNS, RG
中科院分区：
文献类型：
--
作者：
BURNS, RG
热稳定含铁矿物中的配位数、对称性、畸变和配体环境的多样性提供了广泛的化学位移（δ）和四极分裂（δ）参数，这些参数用于表征地球和地外成因矿物中Fe 2+和Fe 3+离子的晶体化学和占位性。亚铁和铁的化学位移之间的相关性，使热诱导的电子离域行为在混合价态的Fe 2 +-Fe 3+矿物被确定，而化学位移与四极分裂相关性用于识别纳米相氧化铁和氢氧化物在氧化矿物和陨石受到水氧化之前和之后，他们到达地球。
The variety of coordination numbers, symmetries, distortions and ligand environments in thermally-stable iron-bearing minerals provide wide ranges of chemical shift (delta) and quadrupole splitting (Delta) parameters, which serve to characterize the crystal chemistries and site occupancies of Fe2+ and Fe3+ ions in minerals of terrestrial and extraterrestrial origins. Correlations between ferrous and ferric chemical shifts enable thermally-induced electron delocalization behavior in mixed-valence Fe2+-Fe3+ minerals to be identified, while chemical shift versus quadrupole splitting correlations serve to identify nanophase ferric oxides and oxyhydroxides in oxidized minerals and in meteorites subjected to aqueous oxidation before and after they arrived on Earth.