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calcioferrite group

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Journal Article
Published: 01 September 2019
European Journal of Mineralogy (2019) 31 (5-6): 1007-1014.
...Ian E. Grey; Anthony R. Kampf; Jason B. Smith; Tim Williams; Colin M. MacRae The calcioferrite group has been formally approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (proposal 19-B). It comprises four minerals with C...
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Journal Article
Published: 01 March 2017
European Journal of Mineralogy (2017) 29 (1): 101-116.
...Irina O. Galuskina; Evgeny V. Galuskin; Anna S. Pakhomova; Remo Widmer; Thomas Armbruster; Biljana Krüger; Edward S. Grew; Yevgeny Vapnik; Piotr Dzierażanowski; Mikhail Murashko Abstract Khesinite, Ca 4 Mg 2 Fe 3+ 10 O 4 (Fe 3+ 10 Si 2 )O 36 , is a new member of the rhönite group of the sapphirine...
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Journal Article
Published: 01 October 2007
The Canadian Mineralogist (2007) 45 (5): 1307-1324.
...Joseph A. Mandarino Abstract The Gladstone–Dale relationship allows one to derive a compatibility index of the physical and chemical data used to characterize a mineral. Minerals of the following groups are reviewed: carbonates, sulfates, phosphates, vanadates, vanadium oxysalts, chromates...
Journal Article
Published: 01 May 2019
European Journal of Mineralogy (2019) 31 (3): 647-652.
.... Thanks to Cameron Davidson for EMP sample preparation. Note added in Proof: The calcioferrite group, of which fanfaniite is a new member, has been formally approved, CNMNC 19-B. A revised formula for kingsmountite, Ca 3 MnFeAl 4 (PO 4 ) 6 (OH) 4 ·12H 2 O , has also been approved...
FIGURES
Journal Article
Published: 26 February 2019
Mineralogical Magazine (2019) 83 (5): 645-654.
... is: KNa 8 Mn 3+ 5 Mg 0.5 [Si 12 O 30 (OH) 4 ](PO 4 )O 2 (OH) 2 ·4H 2 O. Lipuite is orthorhombic, space group Pnnm , a = 9.080(3), b = 12.222(3), c = 17.093(5) Å, V = 1897.0(9) Å 3 and Z = 2. The strongest powder X-ray diffraction peaks [d, Å ( I ) ( hkl )] are: 9.965(40)(011), 2.938(33)(310), 2.895(100...
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Journal Article
Published: 01 December 2010
Mineralogical Magazine (2010) 74 (6): 969-978.
.... Nordgauite nodules enclose crystals of the jahnsite–whiteite group of minerals, showing pronounced compositional zoning, spanning the full range of Fe/Al ratios between jahnsite and whiteite. The whiteite-rich members are F-bearing, whereas the jahnsite-rich members contain no F. Associated minerals include...
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Journal Article
Published: 01 May 2018
European Journal of Mineralogy (2018) 30 (3): 559-567.
... of the natural mixed potassium-barium ferrite was investigated by single-crystal X-ray diffraction. The hexagonal space-group symmetry ( P 6 ‾ m 2 , Z = 2) with a = 5.9137(2) and c = 33.1450(15) Å is different to that ( P 6 3 / mmc ) of the end-members and yields alternate stacking of β-alumina type KMg 2 Fe 15...
FIGURES
Journal Article
Published: 01 June 2019
Mineralogical Magazine (2019) 83 (3): 479-483.
...), tennantite-(Fe), tennantite-(Zn), tetrahedrite-(Fe), and tetrahedrite-(Zn). Furthermore, annivite is formally discredited. IMA 19-B: Establishment of the calcioferrite group Proposal 19-B on the calcioferrite group is accepted. The general formula of minerals belonging to this group is Ca 4 AB 4...
Journal Article
Published: 01 May 2019
European Journal of Mineralogy (2019) 31 (3): 653-658.
..., annivite is formally discredited. IMA 19-B: Establishment of the calcioferrite group Proposal 19-B on the calcioferrite group is accepted. The general formula of minerals belonging to this group is Ca 4 AB 4 (PO 4 ) 6 (OH) 4 ·12H 2 O, and two subgroups are defined on the basis of the dominant...