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Pseudomorph

Silica pseudomorph after gypsum crystals and silicified serpulid polychaete tubes
Pseudomorph of goethite after pyrite

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 due to alteration, or chemical substitution, dissolution and refilling, structural changes or incrustation.[1] The name literally means "false form". Terminology for pseudomorphs is "replacer after original", as in brookite after rutile. The term pseudomorphoses was initially used by Haüy.[2]

  1. ^ Fraile Rodrigo, Jesús; Calvo Rebollar, Miguel (2019). "Pseudomorphs: when the mineral is not what is was". Mineral Up. 5 (3): 8–30. doi:10.5281/zenodo.3674630.
  2. ^ Haüy, René Just (1801). Traité de Mineralogie. Vol. 2. Chez Louis. pp. 140–145.

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زائف الشكل Arabic Psevdomorfozlar AZ Pseudomorfisme Catalan Pseudomorphose German Pseudomorfosis Spanish شکل دروغین FA Pseudomorphose French Պսևդոմորֆոզներ HY Pseudomorfosi Italian 仮晶 Japanese

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