pseudomorphs

Reinvestigation of dioptase-plancheite pseudomorphs after calcite from the Tantara copper deposit Katanga, Republique du Congo.

OpEdNews - Diary: Humanitarian Crisis in Gorilla Habitat 2006

Being less hydrated than malachite it is itself liable to alteration into this mineral, and pseudomorphs of malachite after azurite are not uncommon.

Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" Various

At Monteponi the crystals encrust cavities in glistening granular galena; and from Leadhills, in Scotland, pseudomorphs of anglesite after galena are known.

Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 Various

I conceive it as a mechanism set going by heat -- as a sort of active crystal with the capacity of giving rise to a great number of pseudomorphs; and I conceive that external conditions favour one or the other pseudomorph, but leave the fundamental mechanism untouched.

Life and Letters of Thomas Henry Huxley — Volume 2 Thomas Henry Huxley 1860

The majority of the sauropod elements were encased in an iron-oxide crust which preserve evidence of pyritic pseudomorphs; some iron-oxide crusts were up to 10 cm thick.

PLoS ONE Alerts: New Articles Scott A. Hocknull et al. 2009

It is found that in some cases, the matrix of a certain shaped crystal may, after the crystal is dissolved or taken away, become filled by some other and foreign substance, perhaps in liquid form; or a crystalline substance may become coated or "invested" by another foreign substance, which thus takes its shape; or actual chemical change takes place by means of an incoming substance which slowly alters the original substance, so that eventually each is false and both become pseudomorphs.

The Chemistry, Properties and Tests of Precious Stones John Mastin

"barleycorn" pseudomorphs of calcium carbonate after celestite from

Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" Various