理学 >>> 地质学 >>> 矿床学与矿相学 >>> 凹凸棒石 >>>
搜索结果: 1-15 共查到凹凸棒石 quartz相关记录28条 . 查询时间(0.041 秒)
The Role of Extensional Fractures and Quartz Veins in the Formation of Kaolin Deposit From the Dwyka Tillite in Grahamstown, Eastern Cape Province, South Africa.
Oxygen isotope thermometry based on fractionations among quartz, garnet, kyanite, silliman- ite, and potassium feldspar in amphibolite to granulite facies schists and gneisses was compared to thermo...
Enthalpies of drop-solution (?H ) of a suite of stuffed quartz-derivative phases with the compo-drop-soln Al Si O (0 ? x ? 1) have been measured in molten 2PbO°§ O at 974 K. Substitution of sition...
Quartz°(TM)one of the most abundant minerals in the Earth°Os crust°(TM)has been deemed a human c cinogen by the International Agency for Research on Cancer (IARC), with the main threat to humans bei...
For iron-rich compositions, reactions among titanite, clinopyroxene, olivine, quartz,magnetite, and ilmenite can constrain the conditions under which common rocks form.Phase equilibrium experiments in...
The heat capacities of synthetic coesite and jadeite were measured between about 15 and 850 K by adiabatic and differential scanning calorimetry. The experimental data were smoothed and estimates were...
Spontaneous strains for the a ↔b transition in quartz were determined from lattice parameter data collected by X-ray powder diffraction and neutron powder diffraction over the temperature range ...
The reaction of phlogopite plus quartz to enstatite, potassium feldspar, and aqueous fluid in the system KMASH-KCl was reversed at 2?2 kbar and 750?75 8C and at low H2O activities by reversal of the H...
Memory effects ass~iated with the Dauphine twins in a quartz and the c-antiphase domains (c-APDs) in PI anorthite have been investigated by in situ hot-stage transmission electron microscopy (TEM). ...
Formation of Fe-coatings or segregation at the expense of quartz grains is a common process in the tropical environment. Limited information is available about their internal structure at the submicro...
Ahigh-precision electron microprobe(EMP) technique hasbeendeveloped that is ca-pableofanalyzing major,minor,and trace element abundances (Si,Ti,AI,Fe,Mn,Mg, Ca,Na,K,Cl)in hydrous rhyolitic glasses.Th...
Quartz overgrowths from Keuper sandstones of the Paris basin wereexamined using cathodoluminescence (CL) microscopy and spectroscopy coupled witha scanning electron microscope (SEM). Withthe use ofsta...
Abstract: The weathering of chlorite, one of the major minerals of the host rock in the uranium ore deposit at Koongarra, Australia, was examined by X-ray diffraction (XRD) analysis, scanning electron...
Fluid-absent meltingis believed to bean important processin the generation ofmelts mthe lower crust and upper mantle.Breakdownofphlogopite makesH0 available and thus controlsthe conditions atwhichflui...
Morphologiesofprimary rhyolitic meltinclusions in three successive populations of quartz phenocrysts in asinglevolcanic unit illustrate the changeofinclusion shape after trapping. The 14MaBadlandslava...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...