Incrustation

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Dictionary Meaning and Definition on 'Incrustation'

Incrustation Meaning and Definition from WordNet (r) 2.0
    incrustation n
  1. the formation of a crust [syn: encrustation]
  2. a hard outer layer that covers something [syn: crust, encrustation]
  3. a decorative coating of contrasting material that is applied to a surface as an inlay or overlay [syn: encrustation]
Incrustation Meaning and Definition from Webster's Revised Unabridged Dictionary (1913)
    Incrustation \In`crus*ta"tion\, n. [L. incrustatio: cf. F. incrustation. See Incrust.]
  1. The act of incrusting, or the state of being incrusted.
  2. A crust or hard coating of anything upon or within a body, as a deposit of lime, sediment, etc., from water on the inner surface of a steam boiler.
  3. (Arch.) A covering or inlaying of marble, mosaic, etc., attached to the masonry by cramp irons or cement.
  4. (Fine Arts) Anything inlaid or imbedded.
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Wikipedia Meaning and Definition on 'Incrustation'


In mineralogy, a pseudomorph is a mineral or mineral compound that appears in an atypical form (crystal system), resulting from a substitution process in which the appearance and dimensions remain constant, but the original mineral is replaced by another. The name literally means "false form".

Terminology for pseudomorphs is "replacer after original", as in brookite after rutile.

An infiltration pseudomorph, or substitution pseudomorph is a pseudomorph in which one mineral or other material is replaced by another. The original shape of the mineral remains unchanged, but color, hardness, and other properties change to those of the replacing mineral. An example of this process (also called substitution) is the replacement of wood by silica (quartz or opal) to form petrified wood in which the substitution may be so perfect as to retain the original cellular structure of the wood. An example of mineral-to-mineral substitution is replacement of aragonite twin crystals by native copper, as occurs at Corococo, Bolivia.

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