...Delia-Georgeta Dumitraş Material from the type locality, the “dry” Cioclovina Cave, Şureanu Mountains, Romania, was re-examined in order to update the descriptive mineralogy of ardealite, a rare hydrated calcium acid phosphate sulfate. Ardealite from Cioclovina has a S/P ratio ranging between 1...

...Bogdan P. Onac; Heinz-Jürgen Bernhardt; Herta Effenberger Abstract The complex rare-earth-bearing anhydrous carbonate burbankite, A 3 B 3 (CO 3 ) 5 , occurs as microcrystalline yellow greyish aggregates in the lower part of a lacustrine-like sediment sequence in the Cioclovina Cave, Romania. From...

...Bogdan P. Onac; Herta S. Effenberger § E-mail address : bonac@cas.usf.edu © 2009 Mineralogical Association of Canada 2009 The singularity of the mineral assemblage found in the Cioclovina Cave, Romania, has been known at least since 1932, when J. Schadler described the new mineral...

...Ştefan Marincea; Delia-Georgeta Dumitraş § E-mail address : marincea@igr.ro © 2009 Mineralogical Association of Canada 2009 In a recent paper, Dumitraş et al . (2008) described apatite-(CaOH) from the “dry” Cioclovina Cave, in the Şureanu Mountains, Romania. The paper...

...Delia-Georgeta Dumitraş; Ştefan Marincea; Essaïd Bilal; Frédéric Hatert Abstract Apatite-(CaOH) is the most abundant phosphate in the deposit of fossil bat guano in the “dry” Cioclovina Cave, Şureanu Mountains, South Carpathians, Romania. Initial deposits, of both biogenic and authigenic...

... within the two crystallographically unique T O 4 tetrahedra are 1.734 and 1.526 Å, respectively. From the scattering power at these T sites and the stereochemistry, the presence of an AlO 4 tetrahedron linked to a PO 4 tetrahedron is established. Consequently, the sample from Cioclovina Cave is verified...

...Bogdan P. Onac; Herta Effenberger; Karl Ettinger; Simona Cinta Panzaru Abstract Electron-microprobe analyses of hydroxylellestadite from the Cioclovina Cave (Romania) gave the composition Ca 10.27 [(SiO 4 ) 2.53 (SO 4 ) 2.17 (PO 4 ) 1.27 ] ∑=5.97 [(OH) 1.66 F 0.21 Cl 0.16 ] ∑=2.03 . The mineral...

...Ştefan Marincea; Delia-Georgeta Dumitraş Abstract In a recent work, Onac and White (2003) reported on berlinite, but also chlorellestadite and churchite, from the Bivouac Room, Cioclovina Cave, Romania. Our analyses of materials collected from this site failed to identify berlinite...

... within the Cioclovina Cave in Romania. The X-ray powder diffraction pattern and the hexagonal unit-cell of the Cioclovina berlinite specimen compare well with other published determinations. The lattice parameters are a = 4.94(4), c = 10.87(1) Å, V = 230.1(3) Å 3 . Microprobe analyses confirmed...

...Stefan MARINCEA; Delia DUMITRAS; Raymonde GIBERT Abstract This paper documents the occurrence of tinsleyite in the “dry” Cioclovina Cave, Sureanu Mountains, Romania. This is the first mention of tinsleyite as a cave mineral and the second find of this mineral species in the world. The mineral...

.... ( 2003 ) The American Mineralogist crystal structure database . American Mineralogist , 88 , 247 – 250 . Dumitras , D.G. , Marincea , S. , and Fransolet , A.M. ( 2004 ) Brushite in the bat guano deposit from the “dry” Cioclovina Cave (Sureanu Mountains, Romania) . Neues Jahrbuch...

...); Fe 3+ (0.030 apfu) ( Calas et al. , 2005 ); and from Cioclovina cave, Romania: P (0.947 apfu); Al 3+ (0.965 apfu); and Fe 3+ (0.012 apfu) ( Onac et al. , 2004 ). Voltaite presents a peculiar composition ( Table 1 a ) in comparison with the sample from Smolnik, Czech Republic ( Anthony et al...

... the Cioclovina Cave, Romania: a review . Studia Universitatis Babeţ-Bolyai, Geologia 52 ( 2 ), 3 – 10 . Ottolini L. Cámara F. Bigi S. ( 2000 ) An investigation of matrix effect in the analysis of fluorine in humite-group minerals by EMPA, SIMS, and SREF American Mineralogist 85 , 89...

... in the Cioclovina Cave sediments (Romania) . European Journal of Mineralogy , 21 , 507 – 514 . Orris , G.J. and Grauch , R.I. ( 2002 ) Rare earth element mines, deposits, and occurrences . USGS Open-File Report 02-189 , 174 p. Pekov , I.V. , and Podlesnyi , A.S. ( 2004...

...) Onac , B.P. , Breban , R. , Kearns , J. , Tamas , T. ( 2002 ): Unusual minerals related to phosphate deposits in Cioclovina Cave, Şureanu Mts. (Romania) . Theoretical and Applied Karstology , 15 , 27 – 34 . Ondruš , P. , Veselovský , F. , Hlou sek , J. , Skála...

... of magnetic reversals —Guillaume Cairanne, Fabrice Brunet, Jean-Pierre Pozzi, Pascale Besson, and Charly Aubourg 1385 First reported sedimentary occurrence of berlinite (AlPO 4 ) in phosphate-bearing sediments from Cioclovina Cave, Romania —Bogdan P. Onac and William B. White 1395 High-resolution...