
Diogenite - Wikipedia
Diogenites are a group of the HED meteorite clan, a type of achondritic stony meteorites. Diogenites are currently believed to originate from deep within the crust of the asteroid 4 Vesta, and as such are part of the HED meteorite clan. There are about 40 distinct members known.
张爱铖教授课题组在灶神星陨石研究方面获得新认识 - NJU
2020年3月10日 · 科学家通过光谱分析发现有两千余块陨石(Howardite-Eucrite-Diogenite)可能来自于灶神星,因此称这些陨石为灶神星陨石。 科学家对这些灶神星陨石的研究已经有一百余年的历史。
Diogenite meteorite: Mineral information, data and localities.
Diogenites are an abundant type of achondrite, linked by geochemical traits such as oxygen isotopic ratios and certain elemental ratios, of which Fe/Mn is the most widely cited. The dominant mineral in diogenites is orthopyroxene.
GCA:我院在灶神星早期演化研究方面取得重要进展
2024年11月7日 · 该结论暗示如果混染的Eucrite物质很少,超镁铁岩浆形成的岩石即可能是Diogenite。 该研究还发现了原生玻璃相,提出该陨石的母岩石侵位后不久上覆岩石可能就被撞击作用溅射掉,从而没有受到灶神星早期大规模变质作用的影响。 该研究的结果表明用岩浆洋结晶模型解释Diogenite陨石成因可能过于简单,更支持Diogenite陨石的灶神星壳部成因。...
Diogenites | SHIRA Meteorite Museum (Web)
Textures and Fs compositions of pyroxenes indicate this sample is a diogenite. Specimens: Blaine Reed holds the main mass. Two slices weighing 28.13 g and a polished mount are on deposit at App. History: The meteorite was purchased from a meteorite dealer in Morocco. Physical characteristics: Light grayish rock without fusion crust.
On the source of diogenites and olivine diogenites: Compositional ...
2019年8月1日 · Here, we investigate the plausible mechanisms that could produce the observed compositional trends in diogenites using the thermodynamic software pMELTS (Ghiorso et al., 2002) to model crystallisation paths over a range of conditions and variables.
The origin of 4-Vesta’s volatile depletion revealed by the zinc ...
2024年8月14日 · In this study, we selected 12 diogenites, including falls, hot desert, and cold desert finds. To remove any potential terrestrial contamination, the samples were treated by hot hydrochloric acid leaching.
The origin of eucrites, diogenites, and olivine diogenites: …
2013年7月8日 · Models that are dominated by equilibrium crystallization cannot produce orthopyroxene cumulates (diogenites). Our best models invoke 60–70% equilibrium crystallization of a magma ocean followed by continuous extraction of …
The oxygen isotope composition of diogenites: Evidence
2014年3月15日 · Oxygen isotope measurements of a suite of 22 diogenites demonstrate that they have a restricted range of Δ17 O values: − 0.246 ± 0.014 (2 σ). These results indicate that the diogenites form a single population consistent with a single parent body source, rather than multiple sources as has recently been suggested.
科普:中国境内首颗目击降落灶神星陨石——陕西马子川陨石
2022年11月20日 · 古铜无球粒陨石 (Diogenites),属于 单矿角砾岩,来源于灶神星大颗粒斜方辉石组成的 深成岩。 几乎由 纯粗粒 的 富铁紫苏辉石 和 古铜辉石 等斜方辉石类矿物组成,含有少量的 富镁橄榄石 和 钙长石。 Diogenite群陨石的 大颗粒辉石是在灶神星深部岩浆房中缓慢结晶形成的。 —————— (文章结束) —————— 文章作者: 吕齐 (星石空间站) 发布日期:2022年11月20日. 尊重原创,保护知识产权! 侵权违法,违者必究! 本次 星石空间站 的 中国陕西马子川 …