搜索结果: 1-10 共查到“矿床学与矿相学 Apatite”相关记录10条 . 查询时间(0.141 秒)
Variability of apatite fission-track annealing kinetics: II. Crystallographic orientation effects
apatite fission-track annealing Crystallographic orientation effects method
2012/3/31
A method is presented that permits the length of any horizontal, confined fission-track inclined at a
specified angle to the crystallographic c axis in apatite to be converted to an equivalent track ...
Variability of apatite fission-track annealing kinetics: III. Extrapolation to geological time scales
apatite fission-track annealing kinetics Extrapolation geological time scales
2012/3/31
A new model for examining fission-track data from natural specimens has been developed on the
basis of new laboratory data describing fission-track annealing in a wide variety of apatites and the
em...
Variability of apatite fission-track annealing kinetics: I. Experimental results
apatite fission-track annealing kinetics I. Experimental results initial lengths
2012/3/31
Annealing rates for fission tracks in apatite vary markedly as a complex function of composition,
based on an experimental study of 15 well-characterized, compositionally diverse apatites. Extensive
...
Complex zoning in apatite from the Idaho batholith: A record of magma mixing and intracrystalline trace element diffusion
Idaho batholith magma mixing intracrystalline trace element diffusion REE
2012/3/31
Apatite crystals in a sample of biotite granodiorite from the Idaho batholith display complex chemi-
cal zoning, characterized by abrupt changes in REE+Y+Si content, more subtle variations in S, Na,
...
Replacement of primary monazite by apatite-allanite-epidote coronas in an amphibolite facies granite gneiss from the eastern Alps
Replacement primary monazite apatite-allanite-epidote coronas eastern Alps
2012/3/31
Accessory monazite crystals in granites are commonly unstable during amphibolite fa-cies regional metamorphism and typically become mantled by newly formed apatite-allan-ite-epidote coronas. This dist...
Factors controlling sulfur concentrations in volcanic apatite
Factors controlling sulfur concentrations volcanic apatite
2012/4/6
Apatitecrystalsfromtwotypesofsampleswereanalyzedbyelectronmicroprobefor15majorandtraceelements:(1)apatiteinHO-andS-saturatedexperimentalchargesof
the1982ElChicho!ntrachyandesiteand(2)apatiteinvolcani...
Electron irradiation-induced phase segregation in crystalline and amorphous apatite: A TEM study
Electron irradiation-induced phase segregation crystalline amorphous apatite A TEM study
2012/4/6
SinglecrystalsofnaturalF-richapatiteand800keVKr ion-beam¤Camorphizedapatit
wereirradiatedbyanelectronbeaminatransmissionelectronmicroscopeoverarange
ofbeamenergiesandbeamcurrents.Irradiationofcrysta...
Observations on the geometry of etched fission tracks in apatite: Implications for models of track revelation
Observations geometry of etched fission tracks apatite Implications track revelation
2012/4/9
TEispaperreports observations ofetched internal {OOO1}, {lOTO},{1120}, {loT1},and {1121} surfaces of Durango apatite. Three types of surfaces are distinguished: Ptype, S type, and T type. After initia...
Oxygen Isotopic Constraints on the Origin of Nodular Silica-Apatite from the Har Peres Pyroclastics, Golan Heights, Israel
Apatite Har Peres pyroclastics Oxygen isotope
2011/12/29
Oxygen isotope composition of three types of unique nodules which consist of amorphous silica-apatite, cristobalite-apatite and tridymite-apatite associations interspersed amidst basaltic pyroclastics...
Apatite Replacement and Rare Earth Mobilization, Fractionation, and Fixation During Weathering
Apatite Florencite Granite Phosphorus Rare earth elements Rhabdophane Scanning electron microscopy Weathering
2012/1/5
During an electron microscope study of the weathering of granite from southern New South Wales, Australia, an assemblage of minerals including florencite and rhabdophane was discovered replacing apati...