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Named for the locality, the Poços de Caldas massif.
A Mixture Of:
The so-called Caldasite is an uraniferous zirconium ore, a mixture of Zircon (ZrSiO4) and Baddeleyite (ZrO2), with an average zirconium content higher than 60% ZrO2- and uranium content of 0.3 % U3O8 (Brown, 1972).

Originally described from Poços de Caldas massif.

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Synonyms of CaldasiteHide

Other Language Names for CaldasiteHide

Other InformationHide

Health Risks:
sometimes is low radioactive
Industrial Uses:
Zirconium ore and source of industrial baddeleyte

References for CaldasiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Derby, in Lee (1919), American Journal of Science: 47: 126.
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 610.
Franco, R. R. & Loewenstein, W. (1948): Zirconium from the region of Poços de Caldas. Am. Mineral. 33, 142-151. [http://www.minsocam.org/ammin/AM33/AM33_142.pdf]
A.E.P. Brown (1972): PhD Thesis. University of Sao Paulo. [http://www.ipen.br/biblioteca/teses/00317.pdf]

Internet Links for CaldasiteHide

Localities for CaldasiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Minas Gerais
Derby, in Lee (1919), American Journal of Science: 47: 126; Franco, R. R. & Loewenstein, W. (1948): Zirconium from the region of Poços de Caldas. Am. Mineral. 33, 142-151. [http://www.minsocam.org/ammin/AM33/AM33_142.pdf]
      • Poços de Caldas
Horstpeter H. G. J. Ulbrich (1984) A Petrografia, a Estrutura e o Quimismo de Nefelina Sienitos do Maciço Alcalino de Poços de Caldas MG-SP
  • São Paulo
    • Águas da Prata
Franco, R. R. & Loewenstein, W. (1948): Zirconium from the region of Poços de Caldas. Am. Mineral. 33, 142-151. [http://www.minsocam.org/ammin/AM33/AM33_142.pdf]
Mineral and/or Locality  
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