... available for study within meteorites and lunar samples. However, Mars is a relatively phosphorus-rich planet and possesses abundant evidence of past aqueous surface interactions. Therefore, secondary phosphate phases may be important on the martian surface. Giniite [Fe 2+ Fe 4 3 + (PO 4 ) 4 (OH) 2 ·2H 2 O...

... . Aufschluss 25 , 577 – 591 . Keller P. ( 1977a ) Paragenesis of Tsumeb minerals . Mineralogical Record 8 , 38 – 47 . Keller P. ( 1977b ) Hydrocerussit von Tsumeb/Südwestafrika . Aufschluss 28 , 413 – 415 . Keller P. ( 1980 ) Giniite, Fe 2+ Fe 3+ 4 [(H 2 O) 2 |(OH...

... of meurigite-Na are given in Figures 4 and 5 , respectively. Band assignments are made by analogy to those of giniite ( Frost et al. 2007 ). In the infrared spectrum, there is a sharp band at 3579 cm −1 and two broad bands at 3390 and 3235 cm −1 . The former can be attributed to (OH) stretching and the later...

... Crandallite CaAl 3 (PO 4 ) 2 (OH) 5 ·H 2 O Delvauxite Fe 4 3 + (PO 4, SO 4 ) 2 (OH) 8 ·4–6(H 2 O) Dufrénite Fe 2+ Fe 4 3 + (PO 4 ) 3 (OH) 5 ·2H 2 O Giniite Fe 2+ Fe 4 3 + (PO 4 ) 4 (OH) 2 ·2H 2 O Grattarolaite Fe 3 3 + PO...

..., curetonite, eosphorite, fluellite, françoisite-(Nd), furongite, gainesite, giniite, krasnovite, kryzhanovskite, laueite, leucophosphite, lulzacite, matulaite, mccrillisite, messelite, meta-autunite, metatorbernite, moreauite, olmsteadite, panasqueiraite, perhamite, perloffite, pseudolaueite, rockbridgeite...

.... (2013) , who suggested that ferrian giniite or hydrated monocalcium phosphate [MCP; Ca(H 2 PO 4 )·2H 2 O] should be observed at Paso Robles if their precursor was a Ca-phosphate such as apatite. They support the idea that the alteration conditions at Paso Robles were oxidizing, acidic, and hydrothermal...