Images: Gallionella stalks and a Leptothrix sheath
(1) Background image) underwater in the Piquette mine showing accumulations of orange, polymer-laden ferric iron oxyhydroxides. Tens of centimeter-wide clumps of suspended material were displaced by passage of the leading diver. (2) TEM image of Gallionella stalks (G) and a Leptothrix sheath (L).
Caption: BIOMINERALIZATION OF Fe OXIDES AND ZnS AT THE TENNYSON MINE, WI
"Contrast associated with the stalks and sheath is due to nanoparticulate iron oxyhydroxides. Colloidal aggregates of nanoparticles (c) are also present."
Source: Jill Banfield, et al, Science 4 August 2000
Website: http://www.geology.wisc.edu/~jill/tennyson/tenn2.html
NSF Funded: yes
| Previous slide | Next slide | Back to first slide | View graphic version |