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chalcosiderite

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Journal Article
Published: 01 October 2011
American Mineralogist (2011) 96 (10): 1433–1442.
...Yassir A. Abdu; Sharon K. Hull; Mostafa Fayek; Frank C. Hawthorne Abstract Eight turquoise samples covering a wide range of compositions in the turquoise-chalcosiderite solid-solution series were analyzed by Mössbauer spectroscopy, X-ray diffraction (XRD), electron microprobe analysis (EMPA...
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Journal Article
Published: 01 February 1965
American Mineralogist (1965) 50 (1-2): 227–231.
...Hilda Cid-Dresdner Abstract Chalcosiderite (Maskelyne, 1875; Schaller, 1912) is related to turquois by isomorphous substitution of A1 by Fe. The structure of turquois was recently determined by the author (Cid-Dresdner, 1965), and a determination of the structure of chalcosiderite was considered...
Journal Article
Published: 16 January 2020
The Canadian Mineralogist (2020) 58 (1): 71–83.
...Elahe Mansouri Gandomani; Nematollah Rashidnejad-Omran; Amir Emamjomeh; Pietro Vignola; Tahereh Hashemzadeh ABSTRACT Turquoise, CuAl 6 (PO 4 ) 4 (OH) 8 ·4H 2 O, belongs to the turquoise group, which consists of turquoise, chalcosiderite, aheylite, faustite, planerite, and UM1981-32-PO:FeH. In order...
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PERCENTAGES OF TURQUOISE, PLANERITE, AND <b>CHALCOSIDERITE</b> IN THE STUDIED SAMP...
Published: 16 January 2020
TABLE 5. PERCENTAGES OF TURQUOISE, PLANERITE, AND CHALCOSIDERITE IN THE STUDIED SAMPLES
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The crystal structures of bederite and <b>chalcosiderite</b>: (a) layer 1 of beder...
Published: 01 January 2002
Figure 47. The crystal structures of bederite and chalcosiderite: (a) layer 1 of bederite projected onto (001); (b) layer 2 of bederite projected onto (001); (c) stacking of layers projected onto (100); (Fe 3+ ϕ 6 ) octahedra are 4 4 -net-shaded, (Fe 2+ ϕ 6 ) octahedra are shadow-shaded, Ca
Journal Article
Published: 01 August 1949
American Mineralogist (1949) 34 (7-8): 513–540.
... with beraunite. Rockbridgeite may be isostructural with chenevixiie but not with chalcosiderite. The earliest stage of alteration of dufrenite and rockbridgeite is marked by conversion of Fe" to Fe"' with accompanying slight leaching of P 2 O 5 but without any marked change in the x -ray diffraction pattern...
Journal Article
Published: 01 December 2017
Mineralogical Magazine (2017) 81 (6): 1405–1429.
... shown the presence of: (1) four minerals of the turquoise group: turquoise, faustite, chalcosiderite and planerite; (2) other phosphates from different groups: wavellite, crandallite, goyazite, gorceixite, variscite, metavariscite, fluorapatite; and (3) other minerals: voltaite, adularia and quartz...
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Journal Article
Published: 01 April 2011
Mineralogical Magazine (2011) 75 (2): 327–336.
... Coin, iangreyite occurs as thin, colourless to white or cream, hexagonal tablets up to 0.4 mm in diameter and 0.02 mm thick associated with meurigite-Na, plumbogummite, kidwellite, lipscombite, strengite, chalcosiderite, wardite, leucophosphite, wavellite, goethite, barite, quartz and F-rich perhamite...
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Journal Article
Published: 01 May 2009
American Mineralogist (2009) 94 (5-6): 720–727.
..., meurigite-Na occurs very late in a paragenetic sequence that includes (in approximate order from early to late) quartz, barite, apatite-(CaF), goethite, rockbridgeite, cacoxenite, alunite, wardite, turquoise/chalcosiderite, leucophosphite, lipscombite/zinclipscombite, kidwellite, strengite/variscite...
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Journal Article
Published: 01 February 1998
Mineralogical Magazine (1998) 62 (1): 93–111.
...Eugene E. Foord; Joseph E. Taggart The turquoise group has the general formula: A (sub 0-1) B 6 (PO 4 ) (sub 4-x) (PO 3 OH) x (OH) 8 .4H 2 O, where x = 0-2, and consists of six members: planerite, turquoise, faustite, aheylite, chalcosiderite and an unnamed Fe (super 2+) -Fe (super 3+) analogue...
Journal Article
Published: 01 October 1990
American Mineralogist (1990) 75 (9-10): 1197–1199.
...Pete J. Dunn Abstract Type andrewsite is formally discredited as a mineral species. The original material is a mixture of hentschelite and rockbridgeite, with minor chalcosiderite. Type laubmannite is also formally discredited as a mineral species. Fresh material is a variable mixture of dufrenite...
Journal Article
Published: 01 December 1972
American Mineralogist (1972) 57 (11-12): 1681–1691.
... to determine the cell constants from powder X-ray diffraction patterns. The results from structure factor calculations of two model structures for rashleighite confirm that this mineral can be described as a substitutional solid solution of turquois and chalcosiderite. Presented to the Eighth Congress...
Journal Article
Published: 01 December 1962
American Mineralogist (1962) 47 (11-12): 1303–1309.
.... Spectrochemical analysis shows less than 0.01 per cent iron, indicating that the turquois is the pure aluminum end member of the series turquois-chalcosiderite. Well-developed elongated crystals of vivianite up to 5 cm in length are found along open cracks in silicified limestone. They are deep purple; when...
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BSE images of TUR 3: ( a ) fragment 1; ( b ) fragment 2. In both fragments ...
Published: 01 December 2017
Fig. 6. BSE images of TUR 3: ( a ) fragment 1; ( b ) fragment 2. In both fragments the presence of chalcosiderite (marginal side of the sample, white colour) is visible. ( c ) Detail of fragment 1, with presence of chalcosiderite (Ch) and variscite (V). Scale: ( a ) and ( b ) 1 mm; ( c ) 80 μm.
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Cu  versus  Fe/(Al + Fe 3+ ) diagram. Note that the studied samples lie alo...
Published: 16 January 2020
Fig. 10. Cu versus Fe/(Al + Fe 3+ ) diagram. Note that the studied samples lie along the turquoise–planerite line with slight involvement of chalcosiderite and the unknown mineral.
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Al 2 O 3  versus  Fe 2 O 3  (wt.%) diagram ( Abdu  et al . 2011 ). Note tha...
Published: 16 January 2020
Fig. 9. Al 2 O 3 versus Fe 2 O 3 (wt.%) diagram ( Abdu et al . 2011 ). Note that the majority of studied samples lie long the turquoise–chalcosiderite line. The red arrow indicates sample MM8, which contains the lowest amount of Fe.
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Mössbauer spectra and Fe coordination polyhedra, with conventions as in  Fi...
Published: 01 May 2014
( Rea and Kostiner 1972 ) DD129 and DD309 samples contain Fe 2+ in both M1 and M2, and wagnerite ( Tadini 1981 ) DD330, also from the triplite-triplodite group, is similar. Trolleite DD157 has two doublets with the same Δ but different δ; the Al2 site has the lower δ. Chalcosiderite ML-P39, a member
Journal Article
Published: 01 August 2003
The Canadian Mineralogist (2003) 41 (4): 1070–1071.
.... For instance, andrewsite has been discredited as a mixture of hentschelite + rockbridgeite ± chalcosiderite [ American Mineralogist 75 , 1197 (1990)]. The IMA Amphibole Subcommittee has renamed dannemorite manganogrunerite. The IMA polytype subcommittee has decided to use O and A (in italics...
Journal Article
Published: 08 April 2021
The Canadian Mineralogist (2020) 58 (6): 867–869.
..., andymcdonaldite, 91, argyrodite, 197, badakhshanite-(Y), 387, barbosalite, 756, belomarinaite, 173, biotite, 299, 612, 696, biotite in cordierite/sekaninaite pseudomorphs, 798, bismuthinite, 725, bismutite, 725, bobshannonite, 24, cancrinite, 617, chalcosiderite, 78, childrenite, 740, 759, chiyokoite, 657...
Journal Article
Published: 01 October 2000
Mineralogical Magazine (2000) 64 (5): 905–913.
..., CuAl 6 (PO 4 ) 4 (OH) 8 ·4H 2 O, with which it forms a solid solution series. Both belong to the turquoise group which also includes the members chalcosiderite, CuFe 3+ 6 (PO 4 ) 4 (OH) 8 ·4H 2 O, aheylite, (Fe 2+ ,Zn)Al 6 (PO 4 ) 4 (OH) 8 ·4H 2 O and planerite, □ Al 6 (PO 4 ) 2 (PO 3 OH) 2 (OH) 8...
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