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luneburgite

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Journal Article
Published: 01 August 1991
American Mineralogist (1991) 76 (7-8): 1400–1407.
...P. K. Sen Gupta; George H. Swihart; R. Dimitrijevic; M. B. Hossain Abstract Lüneburgite, Mg 3 (H 2 O) 6 [B 2 (OH) 6 (PO 4 ) 2 ], is triclinic, P 1 , with a = 6.3475(6), b = 9.8027(11), c = 6.2976(5) Å, α = 84.46(1), β = 106.40(1), γ = 96.40(1)° and Z = 1. Its structure has been refined...
Image
Mössbauer spectra and Fe coordination polyhedra, with conventions as in  Fi...
Published: 01 May 2014
) DD219 has a small siderite impurity as well as doublets from Fe 2+ and Fe 3+ assigned to the M2 site. Lulzacite ( Léone et al. 2000 ) DD197, although dominated by siderite, has two Fe 2+ doublets assigned to M1 and M4. Lüneburgite ( Sen Gupta et al. 1991 ) DD218 has a distinct Fe 3+ doublet with δ
Journal Article
Journal: Elements
Published: 01 August 2017
Elements (2017) 13 (4): 261–265.
... environments for phosphorylation to easily proceed because most phosphate is bound in the relatively insoluble minerals of the apatite group. However, Kim et al. (2016) showed that the magnesium phosphate borate mineral lüneburgite {Mg 3 [B 2 (OH) 6 (PO 4 ) 2 ]·6H 2 O} is effective in phosphorylating...
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Journal Article
Published: 01 October 2011
The Canadian Mineralogist (2011) 49 (5): 1211–1220.
... into a specific structural unit gives rise to the class of the borophosphates. If [PO 4 ] 3− and [BO 4 ] 5− tetrahedra (or [BO 3 ] 3− triangles) are isolated from each other in a crystal structure, the compound is a borate-phosphate. The description of the synthesis of the borophosphate lüneburgite, Mg 3 (H 2...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP383.8
EISBN: 9781862396470
... Grandidierite (Mg,Fe)Al 3 BSiO 9 12.08 37520 Wagnerite (Mg,Fe) 2 (PO 4 )(F,OH) 0 0 Lüneburgite Mg 3 (H 2 O) 6 [B 2 (OH) 6 ](PO 4 ) 2 14.08 43710 Note: □ denotes cation vacancy. Boron contents are given for end-member compositions, except prismatine, for which an approximation of a typical...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2007
DOI: 10.1144/SP285.18
EISBN: 9781862395336
... (a manganese boracite) has been found in the Stebnyk and Markova–Rosilna deposits. In the heavy fraction of water-insoluble residues from potash-bearing salts it is associated with anhydrite, barite, breinerite and rarely dolomite ( Slivko 1979 ). In salt breccia from Upper Vorotyshcha subsuite luneburgite has...
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Journal Article
Published: 01 May 2014
American Mineralogist (2014) 99 (5-6): 914–942.
... ) DD219 has a small siderite impurity as well as doublets from Fe 2+ and Fe 3+ assigned to the M2 site. Lulzacite ( Léone et al. 2000 ) DD197, although dominated by siderite, has two Fe 2+ doublets assigned to M1 and M4. Lüneburgite ( Sen Gupta et al. 1991 ) DD218 has a distinct Fe 3+ doublet with δ...
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