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senaite

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Journal Article
Published: 01 April 1992
European Journal of Mineralogy (1992) 4 (2): 331–335.
Journal Article
Published: 01 January 1990
European Journal of Mineralogy (1990) 2 (2): 163–170.
Journal Article
Published: 01 December 1976
American Mineralogist (1976) 61 (11-12): 1203–1212.
Journal Article
Published: 01 June 1968
American Mineralogist (1968) 53 (5-6): 869–879.
...Roland C. Rouse; Donald R. Peacor Abstract Senaite has space group R 3 or R 3 with a =10.42 Å and c =20.86 Å. Analysis of the implication function I 3 ( xy 0) together with chemical analyses shows that it has the probable formula Pb(Ti, Fe, Mn, Mg) 24 O 38 with Z = 3 for the hexagonal cell...
Journal Article
Published: 01 October 2012
European Journal of Mineralogy (2012) 24 (6): 1061–1067.
.... Paseroite occurs in direct association with quartz, chalcocite, volborthite, metatyuyamunite and pyrophanite, and was also found as zones within V-rich senaite crystals with which it forms a solid-solution series. Paseroite forms as isolated submetallic, dark grey to black, elongated scalenohedral crystals...
FIGURES
Journal Article
Published: 01 January 2004
European Journal of Mineralogy (2004) 16 (1): 171–175.
... lamellar mm-sized crystals. Associated minerals are quartz, albite, muscovite, anatase, brookite, rutile, fluorapatite, xenotime, pyrite, a mineral of the synchysite series, dessauite-(Y) and senaite. Optically, gramaccioliite-(Y) is opaque and shows very weak anisotropy and low bireflectance; pleochroism...
FIGURES
Journal Article
Published: 01 November 2005
European Journal of Mineralogy (2005) 17 (6): 933–942.
...). The three cells give a common axial ratio 2.01(1), which is identical to the measured morphological one 2.04(6). The name cleusonite also applies to the previously described “uranium-rich senaite” from Alinci (Macedonia) and the “plumbodavidite” from Huanglongpu (China). * Corresponding author, e-mail...
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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 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 February 1978
American Mineralogist (1978) 63 (1-2): 28–36.
... of 0.043. Loveringite is isostructural with senaite and crichtonite, with a structure based on a nine-layer ( hhc ···) close-packed anion lattice in which the A cation occupies an anion site and the M cations are ordered into 19 octahedral and 2 tetrahedral sites per unit cell. Microprobe analyses...
Journal Article
Published: 01 February 1978
American Mineralogist (1978) 63 (1-2): 37–39.
... of either the pseudobrookite series or the senaite-crichtonite-loveringite series. Copyright © 1978 by the Mineralogical Society of America 1978 ...
Journal Article
Published: 01 June 2014
European Journal of Mineralogy (2014) 26 (3): 427–437.
... occupancies. The occurrence of additional sites was first observed by Gatehouse et al . (1983) who described the presence of an M6 site in mathiasite. Additional sites were then found by Armbruster & Kunz (1990) in a uranium-rich senaite and by Orlandi et al . (1997) in dessauite-(Y...
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Journal Article
Published: 01 May 2017
European Journal of Mineralogy (2017) 29 (2): 331–338.
... (M6–M9) with low occupancies, which also exist in some species of the crichtonite group, such as U-rich senaite ( Armbruster & Kunz, 1990 ), dessauite ( Orlandi et al. , 1997 ), mapiquiroite ( Biagioni et al. , 2014 ), and almeidaite ( Menezes et al. , 2015 ). Nevertheless, assignment of Fe...
Journal Article
Published: 01 July 2006
European Journal of Mineralogy (2006) 18 (4): 493–502.
... of the crichtonite group were previously classified on the basis of the nature of the dominant “large cation” occupying the A (or M 0 ) site in “ AM 21 (O,OH) 38 ”: crichtonite (Sr), loveringite (Ca), landauite (Na), davidite-(Ce), davidite-(La), mathiasite (K), lindsleyite (Ba), and senaite (Pb). The “ M...
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Journal Article
Published: 01 March 2017
The Canadian Mineralogist (2017) 55 (2): 195–206.
..., bertrandite, and danalite. Beryl is notably absent from pegmatites in this area. Zinc-bearing minerals include generally late-stage, metasomatic, or sometimes secondary replacement minerals such as murataite-(Y) [(Y,Na) 6 Zn(Zn,Fe 3+ ) 4 (Ti,Nb,Na) 12 O 29 (O,F,OH) 10 F 4 ] ( Adams et al . 1974 ), senaite...
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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 October 2014
American Mineralogist (2014) 99 (10): 2150–2158.
... be zoned between paseroite and V-rich senaite. The main forms observed are {001} and {102}. It is brittle with a conchoidal fracture a black streak. The hardness is VHN 500 847 (834–865) kg/mm 2 (6–6.5 on Mohs scale) D calc = 4.315 g/cm 3 . In plane-polarized incident light, paseroite is grayish...
Journal Article
Published: 01 January 2005
European Journal of Mineralogy (2005) 17 (1): 163–172.
... ): Cation arrangement in a unusual uranium-rich senaite: crystal structure study at 130 K . Eur. J. Mineral ., 2 , 163 – 170 . Bardossy , G. & Brindley , G.W. ( 1978 ): Rancieite associated with a karstic bauxite deposit . Am. Mineral ., 63 , 762 – 767 . Barrese , E...
FIGURES | View All (6)
Journal Article
Published: 01 December 2011
Mineralogical Magazine (2011) 75 (6): 2887–2893.
..., Italy (44°20′43″N 9°27′32″) Stuart J. Mills*, Luca Bindi, Marcella Cadoni, Marco E. Ciriotti and Anthony R. Kampf *E-mail: smills@museum.vic.gov.au Vanadium analogue of senaite Trigonal: R 3İ; structure determined a = 10.3894(5), c = 20.8709(8) Å 3.417(100), 3.012(21...