pseudomorph


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

pseudomorph

[′süd·ə‚mȯrf]
(mineralogy)
An altered mineral whose crystal form has the outward appearance of another mineral species. Also known as false form.
References in periodicals archive ?
The role of capillary forces acting as hydrostatic tension in capillary water during the dissolution and initial crystallization in the clay pseudomorphs is not yet known.
5-cm calcite pseudomorphs after witherite were collected at the Nentsberry Haggs mine during the early 1990s in a crosscut between the High Raise and Treloar veins; when marketed in the U.
Warren, personal communication, 2007), and pseudomorphs preserved in local strata demonstrate that evaporates precipitated within the Hartford Basin (Gierlowski-Kordesch 1985; Demicco and Gierlowski-Kordesch 1986; Olsen et al.
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.
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.
Microscopic supporting evidence includes microcracks, intraformational micro-breccia/conglomerate, an abundance of dolomite, anhydrite/gypsum pseudomorphs, and fenestrate structures lined with calcite, dolomite and tar.
Baculi can be regarded as original structures (our preferred interpretation) or as pseudomorphs formed during the earliest stages of fossilization (e.