... in the structure of camaronesite are similar to those in the structure of taranakite. The Raman spectrum exhibits peaks consistent with sulfate, phosphate, water and OH groups. The first of the two small boulders in which the camaronesite was found measured roughly 25 cm×20 cm×15 cm and weighed ~8 kg. The second...

...Saverio Fiore; Rocco Laviano Abstract Samples of brushite, hydroxylapatite, and taranakite collected from seven karst caves of Apulia (southern Italy) have been investigated by means of chemical analysis and by DTA and XRD techniques. Brushite is found to crystallize in very pure form, whereas...

...D. McConnell Abstract Rather then being an orthophosphate, it seems probable that taranakite has a structure analogous to illite, from which it can be synthesized. The proposed hexagonal structure, with a = 8.7 and c = 96 Å, is composed of 6 double layeŕs of 4[( X 4 O 10 )(OH) 2 ], where X = P, Al...

...Toshiro Sakae; Toshio Sudo Abstract Taranakite—H 7.09 K 1.97 (Al,Fe) 4.98 (PO 4 ) 8.00 l9.7H 2 O—occurs as aggregates of fine powdery crystals intercalated in clay sediments in the Onino-Iwaya limestone cave at Hiroshima Prefecture, Japan. Cell dimensions of the mineral determined by least-squares...

...John W. Murray; Richard V. Dietrich Abstract Brushite occurs as nodular masses of platy crystals in the lower part of a bat guano and hair deposit in Pig Hole Cave, Giles County, Virginia. Taranakite occurs as flour-like masses near contacts between the guano and hair deposit and clay and along...

..., chlorellestadite, or churchite. Due to the nature of the samples collected from the bat guano deposit at Cioclovina, many possible sources of confusion can occur. For example, separates from a mixture of taranakite, quartz, and minor illite could give the same analytical results as those reported by Onac and White...

...Bogdan P. ONAC; Daniel Ş VEREş Abstract Mǎgurici Cave hosts a diverse assemblage of minerals. The phosphatization of illite and montmorillonite clay rich sediments, located on the cave's floor, lead to the formation of taranakite and francoanellite. Mineral assemblages precipitated...

...James P. Smith; Walter E. Brown Abstract Lattice constants and space groups are reported for several complex iron and aluminum phosphates containing potassium or ammonium: H 6 (K, NH 4 ) 3 Al 5 (PO 4 ) 8 · 18H 2 O (taranakite), H 2 (K, NH 4 )(Al, Fe)(PO 4 ) 2 · H 2 O, H 2 (K, NH 4 )(Al, Fe)(PO 4...

... a nearly ideal formula for berlinite. In situ guano combustion is responsible for the transformation of taranakite and for the dehydration of variscite into berlinite. Berlinite was successfully synthesized from these two minerals at atmospheric pressure and temperatures ranging from 350 to 600 ° C...

... in the formation of crandallite and wavellite (low phosphate concentration) or montgomeryite (high phosphate concentration). Phosphatization of argillaceous sediments will invariably lead to the formation of millisite and taranakite, and may involve palmerite as an intermediate phase. Variscite is unstable...

... the Cioclovina cave is typical for a “dry” system of phosphate-bearing cave deposits. About 22 mineral species have been identified until now. In addition to tinsleyite, in the phosphate-bearing zones occur ardealite, brushite, taranakite, gypsum, hydroxylapatite, crandallite, carbonate-hydroxylapatite, calcite...

...” presented by Breban et al . (2003) and Onac et al . (2007) was recognized in situ , and the analyses of the samples taken from the outcrop depicted in the photo proved that the white material labeled as “berlinite” is a common mixture of taranakite and quartz. The authors gratefully...

... .). Similar lantern units, in which the octahedra are linked by phosphate groups, are found in the structure of the mineral camaronesite, [Fe 3+ (H 2 O) 2 (PO 3 OH)] 2 (SO 4 ) · 1–2H 2 O ( Kampf et al ., 2013 ), while doubled lantern units are found in the structures of taranakite, K 3 Al 5 (PO 3 OH) 6 (PO 4...

..., monetite, crandallite, and taranakite (Constantinescu et al . 1999, Onac et al . 2002, Marincea & Dumitraş 2003, Dumitraş et al . 2004) are accompanied by a number of rare mineral species such as tinsleyite, sampleite, paratacamite or clinoatacamite, churchite-(Y), and foggite (Marincea et al...

... unit’ in the structures of the sulfates coquimbite, aluminocoquimbite ( Demartin et al. , 2010 ) and paracoquimbite ( Majzlan et al. , 2010 ), and the phosphate taranakite ( Dick et al. , 1998 ; Kampf et al. , 2013 c ). Among arsenates, an infinite chain with this triple linkage is found...

..., with brushite or ardealite. Apatite-(CaOH) is the earliest formed of the phosphate phases. Other associated minerals in the fossil guano deposit include taranakite, monetite, crandallite, tinsleyite, leucophosphite, variscite, francoanellite, gypsum, bassanite, calcite, vaterite, aragonite, hematite, goethite...

... of clay minerals during the formation of petroleum. For some time, he was engaged in discussions about the role of clay minerals in the origin of life. His contributions on the alteration of clay minerals by phosphate and the formation of layered aluminophosphates such as taranakite are often ignored...

... and White (2003) . They argue that an excitation voltage that was too high, low beam current and focused electron beam would have promoted loss of alkali elements and consequently, ammonium-bearing taranakite or tinsleyite were misidentified as berlinite. Furthermore, they criticized the choice of variscite...