Gorceixite, a singular product of replacement in fossil bones from the Bauru Basin, Brazil

Authors
Coutinho, JMV Atencio, D Coimbra, AM Fernandes, LA
Citation
Jmv. Coutinho et al., Gorceixite, a singular product of replacement in fossil bones from the Bauru Basin, Brazil, CAN MINERAL, 37, 1999, pp. 945-950
Citations number
18
Categorie Soggetti
Earth Sciences
Journal title
CANADIAN MINERALOGIST
ISSN journal
00084476 → ACNP
Volume
37
Year of publication
1999
Part
4
Pages
945 - 950
Database
ISI
SICI code
0008-4476(199908)37:<945:GASPOR>2.0.ZU;2-Q
Abstract
Gorceixite, ideally BaAl3(PO4)(PO3OH)(OH)(6), formed by the alteration of a patite in fossil bones found in Cretaceous sandstone in the Bauru Basin, so uthern Brazil. The original fine structure of the bone is preserved. The pr esence of gorceixite was established using X-ray powder diffraction, electr on-microprobe analyses and optical microscopy. No convincing evidence was f ound to indicate a source of Ba and Sr required for the replacement of Ca i n the bone phosphate.