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A mineral found crystallized in a form that is not proper to it but to some other mineral.
[pseudo- + G. morphē, form]
References in periodicals archive ?
Iron nodules are clay-coated pseudomorphs of pyrite framboids (Fig.
When the water table lowered, Fe-oxide pseudomorphs formed as pyrite was oxidised.
The fibre pseudomorphs suggests silk as a possibility, primarily because of the low degree of twist in the threads (Carroll 1977:335).
The SEM photographs of sand-sized gibbsite indicate that they are pseudomorphs after feldspars (Fig.
The SEM study indicates that gibbsites are well developed in the form of hexagonal prisms and they are pseudomorphs after feldspars (Fig.
All gradations exist between samples with relict primary clinopyroxene (augite), partially pseudomorphed by actinolite, and accompanied by the remainder of the lower grade assemblages described above, to assemblages with actinolite pseudomorphs exhibiting well-developed blue-green hornblende rims with or without relict pyroxene.
A series of ice-wedge pseudomorphs breach the cultural component, forming a network of polygons that extend across the site.
Possibly the ice-wedge pseudomorphs of Set 2 formed during a cold snap of the late glacial (11-10,000 b.
Veins are characterized by crustiform and colloform banded textures with drusy white to translucent quartz, and coarse-grained bladed pseudomorphs after calcite.
He considered it to be derived from kaolinite pseudomorphs after biotite, through desilification promoted by acid solutions.
The amount of retrograde metamorphism varies from relatively minor with preserved pseudomorphs of garnet or idocrase, to extensive involving the nearly complete recrystallisation of the lower amphibolite facies assemblage to a lower greenschist assemblage.
Textures and mineral chemistry suggest that the mineral assemblages represent progressive stages of metamorphic transformation resulting in the formation of coronas, pseudomorphs after igneous phases (transitional), and true granoblastic eclogite.