Thermal stability of stercorite H(NH4)Na(PO4)·4H2O – a cave mineral from Petrogale Cave, Madura, Eucla, Western Australia

Frost, Ray L. & Palmer, Sara J. (2012) Thermal stability of stercorite H(NH4)Na(PO4)·4H2O – a cave mineral from Petrogale Cave, Madura, Eucla, Western Australia. Journal of Thermal Analysis and Calorimetry, 107(3), pp. 901-903.

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Thermogravimetric analysis has been used to determine the thermal stability of the mineral stercorite H(NH4)Na(PO4)·4H2O. The mineral stercorite originated from the Petrogale Cave, Madura, Eucla, Western Australia. This cave is one of many caves in the Nullarbor Plain in the South of Western Australia. The mineral is formed by the reaction of bat guano chemicals on calcite substrates. Upon thermal treatment the mineral shows a strong decomposition at 191°C with loss of water and ammonia. Other mass loss steps are observed at 158, 317 and 477°C. Ion current curves indicate a gain of CO2 at higher temperature and are attributed to the thermal decomposition of calcite impurity.

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1 citations in Scopus
1 citations in Web of Science®
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ID Code: 48762
Item Type: Journal Article
Refereed: Yes
Keywords: thermogravimetric analysis, stercorite, ‘cave’ mineral, brushite, mundrabillaite, archerite.
DOI: 10.1007/s10973-011-1560-3
ISSN: 1388-6150
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 Kluwer.
Deposited On: 20 Feb 2012 23:54
Last Modified: 22 Jun 2017 14:44

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