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Frondelite-rockbridgeite series

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Journal Article
Published: 01 August 1949
American Mineralogist (1949) 34 (7-8): 541–549.
...; absorption in shades of orange Z>Y>X; 2V medium; dispersion r > v strong. Orthorhombic, tentative space group B22 1 or B22 1 2 (D 2 5 ); a O = 13.89, b 0 = 17.01, c 0 = 5.21 Å. The frondelite-rockbridgeite series is represented by frondelite, Mn″Fe 4 ′″(PO 4 ) 3 (OH) 5 from the Sapucaia pegmatite...
Journal Article
Published: 01 February 2009
Mineralogical Magazine (2009) 73 (1): 131–148.
....% ZnO, was formed by the hydrothermal alteration of triphylite containing admixed sphalerite. The authors considered Zn 2+ to occupy the B site in the general formula, but their reasoning for this is not clear. Minerals of the rockbridgeite-frondelite series occur in a complex assemblage...
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Journal Article
Published: 01 March 2019
European Journal of Mineralogy (2019) 31 (2): 389–397.
... one of these well-entrenched species, which are also valuable indicators of phosphate paragenetic environments. In the five-field diagram, the ideal rockbridgeite and frondelite compositions correspond to mid-series compositions rather than end-member compositions. Such a scheme involves the eventual...
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Journal Article
Published: 01 May 2019
European Journal of Mineralogy (2019) 31 (3): 585–594.
... ): Frondelite and the frondelite-rockbridgeite series . Am. Mineral. 34 , 541 – 549 . Mandarino , J.A. ( 1981 ): The gladstone-dale relationship: Part IV. The compatibility concept and its application . Can. Mineral. , 19 , 441 – 450 . Martin , A.M. , Médard , E. , Devouard , B...
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Journal Article
Published: 01 May 2019
European Journal of Mineralogy (2019) 31 (3): 629–636.
... phosphates with predominant frondelite occur along contacts of these phosphate accumulations with white quartz and cavernous corroded portions carrying younger phosphates (iangreyite, strengite and minerals of the chalcosiderite–turquoise series). Kenngottite from Krásno was originally described...
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Journal Article
Published: 01 April 2014
American Mineralogist (2014) 99 (4): 811–816.
..., frondelite, rockbridgeite, eosphorite, vivianite, fairfieldite, leucophosphite, cyrilovite, phosphosiderite, etc. Correianevesite occurs as grayish-brown to reddish-brown transparent bipyramidal crystals up to 4 mm in size. The streak is white, and the luster is vitreous. Mohs hardness is 3½. Cleavage...
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Journal Article
Published: 01 October 2008
The Canadian Mineralogist (2008) 46 (5): 1131–1157.
...-rich vivianite via phosphoferrite ( Table 3 , Fig. 4d ). This hydration is observed even under the petrographic microscope or on a macroscopic scale by the stepwise change in color, from dark brown into bluish tints. Minerals of the rockbridgeitefrondelite solid-solution series are the most...
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Journal Article
Published: 01 December 2013
European Journal of Mineralogy (2013) 25 (5): 817–823.
... are due solely to pleochroism or if there are chemical variations. The results showed the presence of iron, phosphorous and manganese as the main elements, sodium and silicon as minors and calcium and arsenic as traces. The frondelite-rockbridgeite series has a general formula of AB 4 (PO 4 ) 3 (OH) 5...
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Journal Article
Published: 01 July 2018
European Journal of Mineralogy (2018) 30 (4): 773–783.
... analyses of specimens from a number of localities, Lindberg (1949) revised Frondel’s formula for rockbridgeite and proposed that a solid solution series existed between frondelite and rockbridgeite, with composition M 2+ Fe 3+ 4 (PO 4 ) 3 (OH) 5 ,where M  = Mn for frondelite and Fe for rockbridgeite...
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Journal Article
Published: 01 April 2014
The Canadian Mineralogist (2014) 52 (2): 373–397.
... and heterosite, are significantly different from each other: the cleavage planes of ferriscklerite are filled with yellowish jahnsite, dark acicular minerals from the frondelite-rockbridgeite series, and minor pleochroic hureaulite (colorless to deep orange) ( Fig. 3c, d ), whereas the cleavage planes...
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Journal Article
Published: 01 October 2007
The Canadian Mineralogist (2007) 45 (5): 1263–1273.
... and the frondeliterockbridgeite series . Am. Mineral . 34 , 541 – 549 . Lindberg , M.L. ( 1958 ): The beryllium content of roscherite from the Sapucaia pegmatite mine, Minas Gerais, Brazil, and from other localities . Am. Mineral . 43 , 824 – 838 . Lindberg , M.L. ( 1962 ): Manganoan...
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Journal Article
Published: 01 December 2012
The Canadian Mineralogist (2012) 50 (6): 1531–1554.
... confirmed by Hatert et al. (2011) . Minerals of the jahnsite group generally occur as a thin, yellow rim or intergrowth in ferrisicklerite or in minerals of the rockbridgeitefrondelite series; they can also form small acicular crystals in cavities in feldspar and frondelite. In thin sections...
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Journal Article
Published: 01 October 2008
Mineralogical Magazine (2008) 72 (5): 1119–1144.
... and sanitary ceramic products. This is one of the late phosphate minerals overgrowing minerals of the rockbridgeite-frondelite s.s.s. in druses ( Fig. 9 d ). It stands out from the fibrous phosphates beraunite and ferristrunzite with which it shares the solution cavities in older Fe-Mn phosphates ( Fig...
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Journal Article
Published: 01 June 2011
The Canadian Mineralogist (2011) 49 (3): 765–776.
... 0.95 0.96 The minerals belonging to the rockbridgeitefrondelite series show a Fe tot /(Fe tot + Mn) value of 0.91–0.95 ( Table 7 ), and the refined unit-cell parameters ( Table 3 ) are significantly different from those reported by Moore (1970) . Lipscombite, with a Fe tot /(Fe tot...
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Journal Article
Published: 01 December 2010
The Canadian Mineralogist (2010) 48 (6): 1445–1453.
... or Mössbauer spectroscopy is necessary to confirm the existence of keckite. Nevertheless, there are some optical and chemical clues to evaluate the possibility of having keckite or not. All confirmed keckite samples are intimately intergrown with rockbridgeitefrondelite, in some cases with even single fibers...
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Journal Article
Published: 16 May 2019
The Canadian Mineralogist (2019) 57 (3): 363–370.
.... It was found in the dumps of the Sapucaia pegmatite, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil by one of the authors (SV). The mineral occurs on the surfaces of hydrothermal cavities and is associated with frondelite, mangangordonite, and leucophosphite. It forms prisms weakly elongated along...
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Journal Article
Published: 01 January 2010
American Mineralogist (2010) 95 (1): 204–208.
... and frondelite, from Broken Hill, New South Wales, Australia. Mineral. Mag., 73, 131–148. Plimerite is a new Zn-analogue of rockbridgeite and frondelite, discovered at the Block 14 Opencut, Broken Hill Pb-Zn-Ag deposit in western New South Wales, Australia. The Block 14 Opencut contains phosphate-rich zones...
Journal Article
Published: 01 April 2014
American Mineralogist (2014) 99 (4): 607–611.
... minerals found in the pegmatite, including secondary species, are albite, garnets of the almandine-spessartine solid-solution series, arenopyrite, beryl, bismuth, bütschliite, cryptomelane, cyrilovite, löllingite, fourmarierite, frondelite-rockbridgeite solid-solution series, heterosite, hureaulite...
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Journal Article
Published: 01 November 2018
The Canadian Mineralogist (2018) 56 (6): 871–882.
... mineralogically for its complex phosphate mineral assemblages (see Baijot et al . 2012 , and references therein). Jahnsite-(NaMnMg) was found in vugs in matrix consisting mostly of frondelite and albite in association with meurigite-K (K slightly dominant over Na), phosphosiderite, and strengite. Jahnsite...
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Journal Article
Published: 01 January 2002
Reviews in Mineralogy and Geochemistry (2002) 48 (1): 123–253.
..., but significant advances have been made. Bragg (1930) classified the major rock-forming silicate minerals according to the type of polymerization of (Si,Al)O 4 tetrahedra, and this scheme was extended by Zoltai (1960) and Liebau (1985) ; it is notable that this scheme parallels Bowen’s reaction series...
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