These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Electron paramagnetic resonance, optical absorption and Raman spectral studies on a pyrite/chalcopyrite mineral.
    Author: Udayabhaskar Reddy G, Seshamaheswaramma K, Nakamura Y, Lakshmi Reddy S, Frost RL, Endo T.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2012 Oct; 96():310-5. PubMed ID: 22705674.
    Abstract:
    Pyrite and chalcopyrite mineral samples from Mangampet barite mine, Kadapa, Andhra Pradesh, India are used in the present study. XRD data indicate that the pyrite mineral has a face centered cubic lattice structure with lattice constant 5.4179 Å. Also it possesses an average particle size of 91.9 nm. An EPR study on the powdered samples confirms the presence of iron in pyrite and iron and Mn(II) in chalcopyrite. The optical absorption spectrum of chalcopyrite indicates presence of copper which is in a distorted octahedral environment. NIR results confirm the presence of water fundamentals and Raman spectrum reveals the presence of water and sulfate ions.
    [Abstract] [Full Text] [Related] [New Search]