Partitioning of Ni, Co and V between spinel-structured oxides and silicate melts: Importance of spinel composition

Righter, K.; Leeman, William P.; Hervig, R. L.

doi:10.1016/j.chemgeo.2005.05.011

Cited by 122 publications

(79 citation statements)

References 43 publications

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“…10 may reflect variations in D V spinel or the differences in the appearance of spinel and/or pyroxene as liquidus phases that co-crystallize with olivine. Righter et al (2006b) documented that whereas the D Ni spinel (≈10) and D Co spinel (≈5) are similar to olivine (and are not dramatically dependent on the composition of the early spinel or fO 2 ), D V spinel is dependent upon a range of variables (see equation #2 in Righter et al 2006b). Based on the observations of Righter et al (2006b), the Ni-Co trajectories as shown in Fig.…”

Section: Trace Element In Olivinementioning

confidence: 99%

“…Righter et al (2006b) documented that whereas the D Ni spinel (≈10) and D Co spinel (≈5) are similar to olivine (and are not dramatically dependent on the composition of the early spinel or fO 2 ), D V spinel is dependent upon a range of variables (see equation #2 in Righter et al 2006b). Based on the observations of Righter et al (2006b), the Ni-Co trajectories as shown in Fig. 9 will not reflect the presents or absence of spinel during olivine crystallization because of the similarity of Co and Ni Fig.…”

Section: Trace Element In Olivinementioning

confidence: 99%

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Petrogenetic linkages among Martian basalts: Implications based on trace element chemistry of olivine

Shearer

Burger

Papike

et al. 2008

Meteorit & Planetary Scien

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Abstract-The shergottites exhibit a range of major and trace element compositions, crystallization ages, and initial Sr, Nd, Hf, and Pb isotopic compositions. To constrain the physical mechanisms by which shergottites obtain their compositional characteristics, we examined the major and trace element record preserved in olivine in the more primitive shergottites. Based on such characteristics as the Mg#, V zoning, calculated D Ni,Co , the olivine in Y-980459 are most likely phenocrysts. Many of these same characteristics indicate that the olivines in other shergottites are not in equilibrium with the adjacent melt. However, in most cases they are not xenocrystic, but additions of olivine from the same basaltic system. Elephant Moraine (EET) A79001 may be an exception with the olivine data suggesting that it is xenocrystic. In this case, the olivine crystallized from a reduced and LREEdepleted melt and was incorporated into an oxidized and enriched basalt. Vanadium and CaO in olivine appear to record the appearance of spinel and pyroxene on the liquidus of most of the shergottites. Most of the olivine shergottites represent basalts produced by melting of reduced (IW to IW + 1), depleted mantle sources. Olivine data indicate that many of the primary melts derived from this source had similar Ni, Co, and Mn. Shergottites such as Northwest Africa (NWA) 1110/1068 and perhaps Roberts Massif (RBT) 04261 that appear to be derived from more enriched sources have distinctly different olivine. In the case of NWA 1110/1068, the olivine data suggests that the enriched component was added to system prior to olivine crystallization.

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Section: Trace Element In Olivinementioning

confidence: 99%

Section: Trace Element In Olivinementioning

confidence: 99%

Petrogenetic linkages among Martian basalts: Implications based on trace element chemistry of olivine

Shearer

Burger

Papike

et al. 2008

Meteorit & Planetary Scien

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“…홍천 카 보나타이트와 포스코라이트 복합체의 자철석의 경 우 일부 시료를 제외하고는 Ti 함량이 적고(<0.1 wt.%), Mg와 Al 또한 상당히 낮은 조성을 보이면 서 기존 암체와는 다소 차이를 나타낸다. 일반적으 로 카보나타이트는 분화가 진행됨에 따라 자철석 의 Mg, Ti이 점차 감소하고, Al, Mn은 감소, 증가 혹은 일정하게 유지되는 경향을 보이는데 (Prins, 1972;Gaspar and Wyllie, 1983;Dawson et al, 1996;Chakhmouradian and Zaitsev, 1999;Karchevsky and Moutte, 2004;Lee et al, 2005) Sample HC10-11 HC10-6B HC10-6B HC10-6B HC10-6B HC10-6B HC10-6B HC10-6B HC10-6B HC10-6B HC0627 -19B HC0627 -19B HC0627 -19B HC0627 -19B HC0627 -19B HC0627 -19B HC0627 -19B Rock type P2 P2 P2 P2 P2 P2 P2 P2 P2 P2 P3 P3 P3 P3 P3 P3 (Horn et al, 1994;Toplis and Corgne, 2002;Righter et al, 2006;Reguir et al, 2008 Krasnova et al, 2004;Lee et al, 2004Lee et al, , 2005. 그러나 이제까 지의 연구결과 홍천 카보나타이트-포스코라이트 암체에서는 감람석이나 금운모의 산출이 보고된 바 없다 (Kim et al, 2001;Lee et al, 2002;Oh et al, 2010).…”

Section: 카보나타이트-포스코라이트 복합체의 분화unclassified

“…따라서 이들 광물의 부재나 자철석의 Mg, Al의 함량이 낮은 것은 연구지역 암체를 형성 한 모마그마가 원래부터 이들 원소들이 상당히 결 핍된 특성을 가졌음을 시사한다. Cr의 경우 Fe 3+ 에 잘 치환되는 성질을 갖는 원소이나 (Horn et al, 1994;Righter et al, 2006) 연구지역 자철석의 Cr 함량 이 적은 것도 카보나타이트와 포스코라이트가 결 핍된 모마그마로부터 생성된 것으로 해석할 수 있 다 (Kransnova et al, 2004;Reguir et al, 2008).…”

Section: 카보나타이트-포스코라이트 복합체의 분화unclassified

Mineral Chemistry of Magnetite from the Hongcheon Carbonatite-Phoscorite Complex, Korea

Shin¹,

Oh²,

Lee³

2013

Journal of the Mineralogical Society of Korea

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주요어 : 홍천 카보나타이트-포스코라이트 복합체, 자철석, 전자현미분석, 광물화학ABSTRACT : Magnetite, a major constituent mineral of the Hongcheon carbonatite-phoscorite complex, was produced over three stages in each rock type and decreased in quantity toward the late stage. Electron microprobe analyses for magnetite revealed that Ti and V were detected in traces, but showed increasing tendency from early to late stage. On the contrary, Mg and Mn decreased distinctly, and it is the general differentiation trend of carbonatitic magma. Al also showed decreasing tendency in carbonatite and phoscorite, and Cr was mostly below detection limit except late phoscorite. In early

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“…Consequently, crystallization of a spinel phase strongly influences the budgets of trace elements. The partitioning of elements between spinels and silicate melts is affected strongly by temperature (T ), oxygen fugacity (f O 2 ) and spinel composition (Righter et al, 2006), and may also be affected by pressure (P). Spinel geochemistry can, therefore, be used as an important tool in determining fractionation trends of magmas and the trace-element budget of primary basaltic magmas (Wijbrans et al, 2015), which gives insight into the source region of these melts in the mantle.…”

mentioning

confidence: 99%

Cation distribution and valence in synthetic Al–Mn–O and Fe–Mn–O spinels under varying conditions

et al. 2018

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The spinel-group minerals, found in a range of igneous rocks, are resistant to weathering and can incorporate several multivalent elements, meaning they have the potential to provide insight into the redox conditions of parental magmas. Naturally occurring spinel can contain varying quantities of Mn, an element which occurs terrestrially and extra-terrestrially as Mn 2+ , Mn 3+ , Mn 4+ and Mn 5+ . However, a lack of information on the effects of oxygen fugacity (f O 2 ) on: (1) Mn valence state and cation distribution; and (2) on spinel-melt partitioning means that the potential for a Mn-in-spinel oxy-barometer remains largely untested. Here, we use electron probe microanalysis, micro-focus X-ray Absorption Near Edge Structure (XANES) spectroscopy and single-crystal X-ray diffraction (SC-XRD) to investigate cation distribution and valence state in spinels in the Al-Mn-O and Fe-Mn-O systems synthesized at ambient pressure under varying f O 2 conditions. In contrast to previous studies, we find that the spectral resolution of the Mn K-edge XANES spectra is insufficient to provide quantitative data on Mn valence state and site occupancy, although it does verify that Mn is incorporated as both Mn 2+ and Mn 3+ , distributed over tetrahedral and octahedral sites. Combination of data from XANES and SC-XRD refinements can, however, be used to model Mn, Al and Fe valence and site occupancy. It would be expected that Mn-Fe spinels have the potential to record f O 2 conditions in parental melts due to changes to the octahedral site under conditions that were more reducing. However, decoupling the effects of temperature and oxygen fugacity on the T Fe 3+ -T Mn 2+ exchange in the Mn-Fe spinels remains challenging. In contrast, little variation is noted in Mn-Al spinels as a function of f O 2 , implying that crystal chemistry and cation site geometry may significantly influence cation distribution, and by inference, crystal-melt partitioning, in spinel-group minerals.K E Y WO R D S : spinel, manganese, XANES, oxygen fugacity, jacobsite, galaxite.

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Partitioning of Ni, Co and V between spinel-structured oxides and silicate melts: Importance of spinel composition

Cited by 122 publications

References 43 publications

Petrogenetic linkages among Martian basalts: Implications based on trace element chemistry of olivine

Petrogenetic linkages among Martian basalts: Implications based on trace element chemistry of olivine

Mineral Chemistry of Magnetite from the Hongcheon Carbonatite-Phoscorite Complex, Korea

Cation distribution and valence in synthetic Al–Mn–O and Fe–Mn–O spinels under varying conditions

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