搜索结果: 1-8 共查到“地质学 Pyroxene”相关记录8条 . 查询时间(0.031 秒)
A new pyroxene structure observed at high pressure: Single-crystal X-ray and Raman study of Pbcn-P21cn phase transition in protopyroxene
Single-crystal X-ray high pressure phase transition
2012/3/30
Thecrystalstructureof(Mg Li Sc )Si O protopyroxenehasbeenstudiedwithsin-
1.54 0.23 0.23 2 6
le-crystalX-raydiffractionatpressuresto9.98GPaandRamanspectroscopyto10.4cn
GPa.A?rst-orderdisplacivephase...
Characterization of carbon compounds on a pyroxene surface from a gabbro xenolith in basalt by time-of-flight secondary ion mass spectrometry
Characterization carbon pyroxene surface gabbro xenolith time-of-flight
2012/3/31
Time-of-flight secondary ion mass spectrometry (TOF-SIMS) yields mass spectra of the upper several monolayers of an analytical surface. The applicability of TOF-SIMS to the characterization of C compo...
Full multiple scattering calculations of the X-ray absorption near edge structure at the magnesium K-edge in pyroxene
Full multiple scattering calculations X-ray absorption magnesium K-edge
2012/3/31
We present a comparison between XANES experiments and full multiple-scattering cal-culations at the magnesium K-edge for two pyroxenes, diopside and enstatite, for which Mg atoms are only in the M1 si...
Minor and trace element partitioning between pyroxene and melt in rapidly cooled chondrules
Minor trace element partitioning pyroxene melt rapidly cooled chondrules
2012/4/5
Wepresentminorandtraceelement(REE,Sr,Y,andZr)dataforpyroxenesandme-
sostasesinfourporphyriticchondrulesfromtheSemarkonaordinarychondrite.Apparent
partitioncoef?cientsforclinoenstatite,orthoenstatite...
Structure of synthetic Li2(Mg,Cu)Cu2[Si2O6]2: A unique chain silicate related to pyroxene
Structure synthetic Li2(Mg,Cu)Cu2[Si2O6]2 unique chain silicate pyroxene
2012/4/1
A unique Cu-bearing chain silicate, Li2(Mg,Cu)Cuz[Si206b was synthesized, and the
structure was determined by single-cry~tal X-ray diffraction techniques. The structure was5.7068(7), b =
found to be...
Unequilibrated eucrites and the equilibrated Juvinas eucrite: Pyroxene REE systematics and major, minor, and trace element zoning
eucrites Juvinas eucrite Pyroxene REE systematics major minor trace element zoning
2012/4/9
In unequilibrated eucrites, pyroxene is a sensitive recorder of variables that affect their crystallization histories. Therefore, major,minor,and trace element systematics of pyrox-ene wereevaluated f...
Pyroxene as a recorder of cumulate formational processes in asteroids, Moon, Mars, Earth: Reading the record with the ion microprobe
Pyroxene cumulate formational processes asteroids Moon Mars Earth ion microprobe
2012/4/5
Igneous cumulate rocks provide an important record ofplanetary magmatism, but there are pitfalls in their interpretation. Cumulus minerals mayreact withthe trapped meltand other cumulus phases during ...
Chlorite Vermiculitization and Pyroxene Etching in an Aeolian Periglacial Sand Dune, Allen County, Indiana
Chlorite Denticulations Dunes Etching Hydroxy-Al Indiana Pleistocene Pyroxene Vermiculite Weathering
2012/1/4
Weathering has etched and deeply-denticulated the constituent orthopyroxenes, and chlorite has been transformed to vermiculite in the upper 3 m of an aeolian, periglacial sand dune formed in northeast...