Mindat Logo

Maghemite, Goethite, Hematite, Magnetite

Maghemite : Fe3+2O3, Goethite : α-Fe3+O(OH), Hematite : Fe2O3, Magnetite : Fe2+Fe3+2O4

Photo Copyright © Lukasz Kruszewski 2007  - This image is copyrighted. Unauthorized reproduction prohibited.

According to OHKAWA et al. (2007) coarse-grained maghemite (i.e. when produced by magnetite alteration) is quite unstable. The presented rounded aggregate, according to PXRD analysis, consists of goethite and hematite formed in cost of maghemite. Diffraction pattern shows also some amounts of maghemite. Close to its reflections, magnetite ones are seen, too. Field of view is 3 mm.

OHKAWA M., MIHAYARA M., OHTA E., HOSHINO K., 2007: Silicon-substituted magnetite accompanying iron oxides and hydroxides from the Kumano mine, Yamaguchi Prefecture, Japan: Reexamination of the so-called maghemite (γ-Fe2O3).

This photo has been shown 2435 times

Photo added: 20th Feb 2007

Other Views - click to switch

View User Page & Photos View Maghemite Gallery View Similar Images Create Talk Page Light Background

Mineral and/or Locality  
Search Google  
Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: December 22, 2014 00:41:02
Mineral and Locality Search
and/or Locality:
Fade toolbar when not in focusFix toolbar to bottom of page
Hide Social Media Links
Slideshow frame delay seconds