In many cases the pseudomorphs
after feldspar are well noticed.
Iron nodules are clay-coated pseudomorphs
of pyrite framboids (Fig.
The Blanch-Ink-Jet Maneuver may be universal in squids inhabiting the photic zone: the animal blanches Clear and jets away quickly in the backwards direction while ejecting ink in a pseudomorph
that remains in the same approximate position from which the squid started the maneuver.
As referred to earlier, airborne particles in smoke from forest fires include pseudomorphs
of CaOx in the form of CaC[O.sub.3] (Hoyas et al.
after staurolite as a record of fluid infiltrating during prograde metamorphism.
Some of these minerals represent pseudomorphs
after previous mafic minerals (Fig.
Actually, in my next lecture I plan to show "Map" upside down alongside Cezanne's hat and "Mont Sainte-Victoire," partly because I've come to believe over time that there are no pseudomorphs
in visual art.
Iron oxide pseudomorphs
after chalcopyrite make Emu Plain an exciting drill target.
* Crystal pseudomorphs
. Evaporite crystal splays can produce radial structures (J.
Rarely, the district has also provided good specimens of hausmannite, pyrolusite, pseudomorphs
of hausmannite after manganite, and pseudomorphs
of pyrolusite after calcite--but it is almost entirely to its wonderful manganite specimens that Ilfeld owes its fame in the world of mineral collecting.
Chemical weathering of plagioclase, alkali feldspar, and biotite has formed kaolin which mostly occurs as an anisotropic matrix which pseudomorphs
primary minerals (Fig.
Donaldson, A., and Hilowle, M.A., 2002, Organic mats, evaporite pseudomorphs
and soft-sediment deformation in quartz arenites of the Cambro-Ordovician Nepean Formation: GAC-MAC, Saskatoon 2002, Program with Abstracts, [http://gac.esd.mun.ca/gac_2002/search_abs/ sub_program.asp?sess=98&form=10&abs_no=73]