Discovery and characterization of a struvite layer in the Chalco paleolake, Mexico

作者：Pi Teresa^*; Lozano Garcia Socorro; Caballero Miranda Margarita; Ortega Guerrero Beatriz; Roy Priyadarsi

来源：Revista Mexicana de Ciencias Geologicas, 2010, 27(3): 573-580.

• phosphate
• X-ray diffraction
• infrared spectra
• thermogravimetric analysis
• Rietveld refinement

Centimeter-sized crystals of struvite (MgNH4PO4 center dot 6H(2)O) were found during the drilling of a core from Chalco paleolake, Mexico for paleoecological and paleoclimatical research. Struvite is a biogenic mineral, unstable in most geological environments. The unusual si.:e and preservation of these struvite crystals allowed us to perform a chemical and mineralogical characterization. This is the first record of struvite flans a geological locality in Mexico, and one oldie most remarkable in the world.

• 出版日期2010-12