理学 >>> 地质学 >>> 矿床学与矿相学 >>> 凹凸棒石
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The shear viscosities of melts in the system Na-Fe-Si-O-F-Cl were determined over a wide range of temperatures (400–1200 8 C) at 1 atm pressure in air. The compositions are based on the addition of Fe...
Asampleofanordinarychondritefall,Allegan,wasshownby FeMo!§ssbauerspectroscopytobeunweathered.Usingaerateddeionizedwaterat25 and0C,andinone casewithdissolvedsaltsadded,anattemptwasmadetosimulatemeteor...
AmphibolefromalkaligranitesintheRamnescauldronintheOsloriftwasaltered hydrothermallybycorrosionandgrowththroughmultipleeventsof?uidcirculation.The alterationdevelopedsuccessivezonesofamphiboleatthec...
CI-and S04-bearing cancrinite-like mineralsfrom Italian localities werestudied by meansofEPMA,X-raydiffraction, and IR spectroscopy to relate their chemicalcompo-sition, IR data, and structural featur...
Biotite and amphibole containing up to 4.6 and 5.1 wt%Cl,respectively, are found in gneisses from BlackRock Forest, located within the Hudson Highlands ofNewYork. The area wasmetamorphosed to granulit...
Diffractograms of lepidocrocites formed from the oxidation of Fe(II) chloride solutions at pH 7 and 25∑C showed differential line broadening with (0k0) reflections being much sharper than (hk0) or (hk...
The formation of fine-grained magnetite (∼0.1 µm) at pH 7 and 25°C from aeration of Fe(II) chloride solutions is presented. The magnetite converted at 105°C to maghemite with poorly develo...
The basic salts of this system were prepared and their structures and physico-chemical properties were studies by electron microscopy, chemical analysis, X-ray powder diffraction, thermal analysis, i....

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