搜索结果: 1-15 共查到“地质学 Silicate”相关记录35条 . 查询时间(0.07 秒)
Presolar silicate grains: Abundances, isotopic and elemental compositions, and the effects of secondary processing
presolar grains silicates nucleosynthesis isotopes AGB stars
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2017/4/10
Close to a thousand presolar silicate grains have been identified since their initial discovery in interplanetary dust
particles (IDPs) just over ten years ago. Studies have shown that silicates are ...
Pb isotope analyses of silicate rocks and minerals with Faraday detectors using enhanced-sensitivity laser ablation-multiple collector-inductively coupled plasma mass spectrometry
laser ablation Pb isotopes MC-ICP-MS glass melt inclusion plagioclase clinopyroxene
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2017/4/11
We present analytical protocols and the analytical performance of Pb isotope analysis of silicate minerals and rocks at
the Pb = 0.02–15 ppm level using excimer laser ablation (LA) coupled with an en...
Experimental study on tin partition between granitic silicate melt and coexisting aqueous fluid
experimental study tin partition granitic silicate melt aqueous fluidonment
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2017/8/10
The distribution of tin between different granitic silicate melts and coexisting aqueous fluids have been determined at 850°C, 100 MPa and fO2 near NNO. Tin distribution coefficients are constrained ...
Revisiting silicate authigenesis in the Pliocene–Pleistocene Lake Tecopa beds, southeastern California: Depositional and hydrological controls
saline, alkaline lake, Pliocene–Pleistocene, zeolite, depositional facies, authigenic minerals
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2011/11/14
The Pliocene–Pleistocene Lake Tecopa beds present a well-documented example of authigenic silicate diagenesis in an ancient saline, alkaline lake environment. Controls on authigenic mineral formation ...
On the friction and sliding wear of rubber/layered silicate nanocomposites
nanomaterials polymer composites rubber wear organoclay
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2011/12/14
The dry sliding and friction behaviors of organoclay modified hydrogenated nitrile (HNBR) and ethylene/propylene/diene (EPDM) rubbers were studied using a pin (steel)-on-plate (rubber sheet) test conf...
Overall Properties of Fibrillar Silicate/Styrene–Butadiene Rubber Nanocomposites
fibrillar silicate styrene butadiene rubber properties anisotropy
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2011/11/10
The mechanical properties, heat aging resistance,dynamic properties, and abrasion resistance of fibrillar silicate (FS)/styrene butadiene rubber (SBR) nanocomposites are discussed in detail. Compared ...
Palygorskite genesis through silicate transformation in Tunisian continental Eocene deposits
palygorskite illite Tunisia Eocene
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2011/11/2
The mineralogical and geochemical characteristics of Eocene continental sedimentsin south central Tunisia (Chebket Bouloufa and Jebel Hamri) and in north central Tunisia (Jebel Lessouda and Jebel Rhe磑...
Structural investigation of platinum solubility in silicate glasses
Structural investigation platinum solubility silicate glasses
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2012/4/1
The coordination environment of 20-200 ppm Pt in yellowish glasses from the CaO-Al O -SiO
2 3 2(CAS) ternary was studied using X-ray absorption fine structure spectroscopy at the Pt-L edge.
IIIedge...
Akimotoite, (Mg,Fe)SiO3, a new silicate mineral of the ilmenite group in the Tenham chondrite
Akimotoite Mg,Fe SiO3 new silicate mineral ilmenite group Tenham chondrite
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2012/4/1
Akimotoite,(Mg,Fe)SiO ,anewsilicatemineraloftheilmenitegroup,wasfoundin3theshock-metamorphosedTenhamchondrite.Itoccursasaggregatesadjacenttoclinoen-statiteinfragmentswithinshock-inducedmeltveins.Chemi...
Thermal expansion of silicate liquids: Direct determination using container-based dilatometry
silicate liquids container-based dilatometry thermal expansion
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2012/3/31
The expansivity of a silicate melt in the relaxed liquid state was obtained by direct dilatometric
measurement for the first time. During the measurement, the liquid sample resides within a metal
co...
Modeling of the solubility of a two-component H2O + CO2 fluid in silicate liquids
H2O + CO2 silicate liquids two-component
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2012/3/31
Thesolubilityofatwo-component,H O CO ?uidinsilicateliquidswasmodeledby
assumingmechanical,thermal,andchemicalequilibriumbetweenthe?uidandliquidphas- H O CO )
es.Theliquidphasewastreatedasa12-compone...
Akimotoite, (Mg,Fe)SiO3, a new silicate mineral of the ilmenite group in the Tenham chondrite
silicate mineral (Mg,Fe)SiO3 SAED
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2012/3/30
Akimotoite,(Mg,Fe)SiO ,anewsilicatemineraloftheilmenitegroup,wasfoundin3
theshock-metamorphosedTenhamchondrite.Itoccursasaggregatesadjacenttoclinoen-
statiteinfragmentswithinshock-inducedmeltveins.C...
Si,Al ordering in the double-ring silicate armenite, BaCa2Al6Si9O30?H2O: A single-crystal X-ray and 29Si MAS NMR study
BaCa2Al6Si9O30?H2O single-crystal
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2012/3/30
29The SiMASNMRspectrumofarmenitefromWasenalp(Valais,Switzerland)indicates
completeSi,Alordering.Thesamechemicalshifts(82.3,95.0,and101.8ppm)were
alsomeasuredforarmenitefromRe!migny(Quebec,Canada),ho...
Structure and dynamics of magnesium in silicate melts: A high-temperature 25Mg NMR study
Structure dynamics magnesium silicate melts high-temperature
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2012/4/1
25Mg NMR spectra for several silicate and aluminosilicate melts were obtained from 1000–1470 8C. The peaks are initially very broad, but narrow with increasing temperature to near 500 Hz at the highes...
Heterogeneous crystal nucleation on bubbles in silicate melt
Heterogeneous crystal nucleation bubbles silicate melt
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2012/4/1
Experiments reported herein document heterogeneous crystal nucleation on bubbles in supercooled lithium disilicate melt. Crystalline lithium disilicate (Li2Si2O5) nucleated and grew on small bubb...