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landauite

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Journal Article
Published: 01 February 1978
The Canadian Mineralogist (1978) 16 (1): 63–68.
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REPRESENTATIVE RESULTS OF ELECTRON-MICROPROBE ANALYSES OF LORENZENITE AND L...
Published: 01 December 2002
TABLE 5. REPRESENTATIVE RESULTS OF ELECTRON-MICROPROBE ANALYSES OF LORENZENITE AND LANDAUITE, KATZENBUCKEL VOLCANO, SOUTHWESTERN GERMANY
Journal Article
Published: 01 December 2002
The Canadian Mineralogist (2002) 40 (6): 1609–1627.
...TABLE 5. REPRESENTATIVE RESULTS OF ELECTRON-MICROPROBE ANALYSES OF LORENZENITE AND LANDAUITE, KATZENBUCKEL VOLCANO, SOUTHWESTERN GERMANY ...
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Small tabular crystals of “high-titanium” freudenbergite (Fr) in coexistenc...
Published: 01 December 2002
F ig . 7. Small tabular crystals of “high-titanium” freudenbergite (Fr) in coexistence with bright, anhedral grains of landauite (Lan). The BSE image is from alkali syenite dike Kb 59b. Sanidine (Sa) and coarser grains of aegirine (Ae) are present in the surroundings.
Journal Article
Published: 01 April 2015
Mineralogical Magazine (2015) 79 (2): 269–283.
... with I > 3σ( I ). Almeidaite is a member of the crichtonite group with Pb dominant in the A site (with 12-fold coordination) and Zn dominant in the T site (with 4-fold coordination). It is a Zn analogue of senaite and a Pb analogue of landauite. The mineral is named after Professor Fernando Flávio...
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Journal Article
Published: 01 July 2006
European Journal of Mineralogy (2006) 18 (4): 493–502.
..., related to crichtonite, landauite and davidite-(Ce,La), may represent potentially new members of the crichtonite group. They display compositional zoning, and are associated with diverse oxide minerals, albite and alkali feldspar. Our compositions (EMP) suggest that the “large cations” (Sr, Na, K...
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Journal Article
Published: 01 June 1983
American Mineralogist (1983) 68 (5-6): 494–505.
... of the AM 21 O 38 series, characterized by predominant A-specific, large cations (Sr = crichtonite; Na = landauite; Pb = senaite; Ca = loveringite, and U + REE = davidite), and by M-formula small cations which are dominantly Ti, Cr, Fe, Mg, Zr, and Nb. Approximately 70% of the A-site is filled by either Ba...
Journal Article
Published: 01 October 1979
American Mineralogist (1979) 64 (9-10): 1010–1017.
..., mainly titanium and iron, occupy a tetrahedral site, M(2), and three other octahedral sites, M(3), M(4), and M(5). A comparison is made of the site occupancies and average metal-oxygen bond lengths for five crichtonite-group minerals—senaite, crichtonite, davidite, loveringite, and landauite. A linear...
Journal Article
Published: 01 November 2005
European Journal of Mineralogy (2005) 17 (6): 933–942.
... ( Zhang et al. , 1988 ), senaite ( Grey & Lloyd, 1976 ), dessauite-(Y) ( Orlandi et al. , 1997 ), landauite ( Grey & Gatehouse, 1978 ), gramaccioliite-(Y) ( Orlandi et al. , 2004 ) and the new mineral cleusonite ( Table 1 ). Crichtonites are characterised by a common structural formula: XII_...
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Journal Article
Published: 01 January 2004
European Journal of Mineralogy (2004) 16 (1): 171–175.
... the crichtonite group is characterized by an unique combination of dominant A and B cations. The minerals so far known within this group are crichtonite, senaite, davidite-(La), davidite-(Ce), davidite-(Y), loveringite, landauite, linds-leyite, mathiasite, dessauite-(Y), and the new mineral “IMA 1998–070” ( Table...
FIGURES
Journal Article
Published: 01 October 2012
European Journal of Mineralogy (2012) 24 (6): 1061–1067.
... 0.14 Sr 0.10 ) ∑l.0 [Ti 12.90 Cr 3.l0 Mg 1.53 Fe 2.15 Zr 0.67 Ca 0.29 (V,Nb,Al) 0.36 ] ∑2l.0 O 38 . Acta Cryst. , C39 , 421 – 422 . Grey I.E. Gatehouse B.M. ( 1978 ): The crystal structure of landauite, NaMnZn 2 (Ti,Fe) 6 Ti 12 O 38 . Can. Mineral. , 16 , 63 – 68 . Grey...
FIGURES
Journal Article
Published: 01 May 2017
European Journal of Mineralogy (2017) 29 (2): 331–338.
... to their various chemical compositions. As a result, in addition to the early defined species, such as crichtonite ( Grey et al. , 1976 ), senaite ( Grey & Lloyd, 1976 ), landauite ( Grey & Gatehouse, 1978 ), loveringite ( Gatehouse et al. , 1978 ), davidite-(Ce) and davidite-(La) ( Gatehouse et al...
Journal Article
Published: 01 June 2014
European Journal of Mineralogy (2014) 26 (3): 427–437.
... et al . (1997) Gramaccioliite-(Y) 2.813 2.225 1.957 2.015 1.967 1.980 Orlandi et al . (2004b) Landauite 2.822 2.211 1.963 1.997 1.973 1.969 Grey & Gatehouse (1978) Lindsleyite 2.837 2.119 1.948 1.982 1.990 1.978 Zhang et al . (1988) Loveringite 2.789...
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Journal Article
Published: 01 October 2006
Mineralogical Magazine (2006) 70 (5): 565–578.
... 3 ) 2 (OH) 6 4 1O,3OH APEG X 15 6 2O, 4OH Franklinite Spinel ZnFe 2 3+ O 4 4 4O X X 4 Landauite Crichtonite Na[MnZn 2 (Ti,Fe) 6 Ti 12 ]O 38 4 4O 1.964 16 Murataite (Y,Na) 6 (Zn,Fe 3+ ) 5 (Ti,Nb) 12 (O,□) 29 (O,F) 10 F4 5 5O 2.04 Fe 3+ , Ti...
FIGURES
Journal Article
Published: 01 June 2010
European Journal of Mineralogy (2010) 22 (3): 443–452.
... are cleusonite, crichtonite, davidite-(La), davidite-(Y), davidite-(Ce), dessauite-(Y), gramaccioliite-(Y), landauite, lindsleyite, loveringite, mathiasite, and senaite (Table 1 ; cf. Wülser et al ., 2005 ). Table 1. Main cations on the M0 (=A) and M1 (=B) structural sites of the crichtonite group...
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Journal Article
Published: 01 April 2007
American Mineralogist (2007) 92 (4): 703–707.
... Fe 2 O 38 ; (Na,Sr,K,REE)(Zr,Ca,Mn)(Ti,Fe) 18 Fe 2 O 38 . Formulae 1 and 2 correspond to potentially new Ca- or Zr-dominant variants of crichtonite, whereas 3 and 4 correspond to potentially new Ca- or Zr-dominant variants of landauite. Georgbarsanovite (collected prior to 1963) came...
Journal Article
Published: 01 August 2004
The Canadian Mineralogist (2004) 42 (4): 1169–1178.
... is also present as H 2 O-free minerals such as willemite, genthelvite, landauite, murataite, nordite and osumillite. Subsolidus, low-temperature autohydration processes result in sequestration of Zn in clay minerals, zeolites and labuntsovite-group minerals. These observations are at variance...
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Journal Article
Published: 01 May 2016
Russ. Geol. Geophys. (2016) 57 (5): 698–712.
..., pyrophanite, Sr-perrierite, landauite, rutile, anatase, bookite), REE minerals (loparite, metaloparite, britholite, rinkolite, melanocerite, bastnäsite, parisite, fluocerite, ancylite, monazite, REE‑apatite), Nb- and Ta-minerals (pyrochlore, blomstrandite, loparite, four varieties of metaloparite), and other...
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Journal Article
Published: 01 October 2014
Mineralogical Magazine (2014) 78 (5): 1071–1095.
... ; Gatehouse et al. , 1978 ). Other crichtonite-group minerals such as crichtonite sensu stricto with A = Sr ( Grey et al. , 1976 ), dessauite with A = Sr, Pb ( Orlandi et al. , 1997 ), landauite with A = Na ( Grey and Gatehouse, 1978 ) and davidite with A = Ln , Th, U, Y, Sr, Pb ( Gatehouse et al...
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Series: Geological Society, London, Special Publications
Published: 30 August 2019
DOI: 10.1144/MPAR4.4
EISBN: 9781786204684
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