This new method which is worked out in Isfahan University of Technology, makes it possible to analyze the phases quantitatively in minerals and powdered materials by X Ray Diffraction and without any reference material. To identify n unknown phases, n different combinations of phases, from fine and coarse fractions, or etc., must be obtained. Amorphous phases should not exist. Intensity ratios ...

Abstract The visible, near-, and mid-infrared (?0.4–6??m) imaginary indices of refraction (k) are estimated from reflectance spectra for three carbonates germane to martian terrestrial studies. resulting values combined with previous data at longer wavelengths a subtractive Kramers-Konig analysis is used estimate the real (n) as function wavelength. This process iterated until neither n or k va...