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Dark waxy green crystals composed of basic copper phosphate. Pseudomalachite occurs naturally in the oxidation zones for copper ores. It resembles Malachite in appearance but lacks the characeristic light/dark banding of malachite. Pseudomalachite has been found in Zaire (Shaba), Slovakia (Libethen), Germany (Bavaria), France, Russia, Canada and the U.S. (Arizona).

Synonyms and Related Terms

basic copper phosphate; false malachite; ehlite; lunnite; Pseudomalachit (Deut.) 


Pseudomalachite (HU Mineral Museum).PNG


Pseudomalachite IR-ATR RRUFF R040175.png

Raman (RRUFF)

Pseudomalachite Raman RRUFF R040175.png

Physical and Chemical Properties

  • Crystals = massive
  • Fracture = conchoidal
  • Cleavage = imperfect
  • Luster = glassy
  • Streak = bluish green
  • Unlike malachite, pseudomalachite will not react with acids.
Composition Cu5(PO4)2(OH)4
Mohs Hardness 4.0-4.5
Density 3.6-4.34 g/ml
Molecular Weight 542.68
Refractive Index 1.791; 1.856; 1.867

Resources and Citations

  • Naumova et al. Studies in Conservation 35:81-88, 1990