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lamprophyllite

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Journal Article
Published: 01 July 2003
European Journal of Mineralogy (2003) 15 (4): 711–718.
...Sergey V. KRIVOVICHEV; Thomas ARMBRUSTER; Viktor N. YAKOVENCHUK; Yakov A. PAKHOMOVSKY; Yuriy P. MEN'SHIKOV Abstract The crystals of lamprophyllite-2 M and lamprophyllite-2 O were found coexisting in an ussingite-microcline-sodalite veins in the Alluaiv Mt., Lovozero alkaline massif, in association...
FIGURES
Journal Article
Published: 19 April 2022
The Canadian Mineralogist (2022) 60 (3): 493–512.
...Elena Sokolova; Maxwell C. Day; Frank C. Hawthorne; Fernando Cámara ABSTRACT Shkatulkalite, ideally Na 5 TiNb 2 (Si 2 O 7 ) 2 O 3 F(H 2 O) 7 , is a lamprophyllite-group (seidozerite supergroup) TS-block mineral from the Lovozero massif, Kola Peninsula, Russia. The crystal structure of shkatulkalite...
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Journal Article
Published: 01 December 2016
European Journal of Mineralogy (2016) 28 (5): 915–930.
...Ramiza K. Rastsvetaeva; Nikita V. Chukanov; Sergey M. Aksenov Abstract The crystal structures of the lamprophyllite-related minerals are based upon HOH modules consisting of a central octahedral O sheet sandwiched between two heteropolyhedral H sheets. The general crystal-chemical formula...
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Journal Article
Published: 01 January 2012
European Journal of Mineralogy (2012) 24 (1): 181–188.
...Nikita V. Chukanov; Igor V. Pekov; Ramiza K. Rastsvetaeva; Sergey M. Aksenov; Aleksandr E. Zadov; Konstantin V. Van; Günter Blass; Willi Schüller; Bernd Ternes Abstract The new Mg- and F-dominant lamprophyllite-group mineral lileyite (IMA 2011-021) was found at the Löhley quarry, Üdersdorf, near...
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Journal Article
Published: 01 April 1998
Mineralogical Magazine (1998) 62 (2): 179–196.
Image
The  HOH  layer in <span class="search-highlight">lamprophyllite</span>-2 M  and <span class="search-highlight">lamprophyllite</span>-2 O  (a), the  H ...
Published: 01 July 2003
Fig. 2. The HOH layer in lamprophyllite-2 M and lamprophyllite-2 O (a), the H sheet (b), and arrangements of octahedral sheets in the structures of lamprophyllite-2 M (c) and lamprophyllite-2 O (c). In (c) and (d), arrows are used to indicate orientations of the octahedral sheets.
Journal Article
Published: 01 December 2010
The Canadian Mineralogist (2010) 48 (6): 1487–1492.
... – aegirine lens within apatite-rich urtite at Mt. Koashva in the Khibiny alkaline complex, Kola Peninsula, Russia. The new mineral species is associated with astrophyllite, burbankite, chlorbartonite, fluorapatite, fluorite, lamprophyllite, polezhaevaite-(Ce) and villiaumite. Strontiofluorite occurs as cubo...
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Journal Article
Published: 01 February 2010
The Canadian Mineralogist (2010) 48 (1): 41–50.
..., it occurs within an ussingite – aegirine – microcline vein in nepheline syenite at Mt. Punkaruaiv in association with anglesite, belovite-(Ce), chkalovite, epididymite, epistolite, eudialyte, ferronordite-(Ce), karnasurtite-(Ce), lamprophyllite, lorenzenite, manganoneptunite, manganonordite-(Ce), monazite...
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Journal Article
Published: 01 October 2008
The Canadian Mineralogist (2008) 46 (5): 1323–1331.
... des blocs TS dans ces deux polytypes de la nabalamprophyllite est identique à celle entre polytypes dans la lamprophyllite-2 O et lamprophyllite-2 M . Parmi les disilicates de Ti contenant le bloc TS, on pourrait considérer la hainite, (Ca 3 REE) Na (NaCa)Ti (Si 2 O 7 ) 2 OF 3 , et la rinkite, (Ca 3...
FIGURES
Journal Article
Published: 01 April 2008
The Canadian Mineralogist (2008) 46 (2): 403–412.
... structure is identical to that of lamprophyllite, (SrNa) Na 3 Ti 3 (Si 2 O 7 ) 2 O 2 (OH) 2 , and nabalamprophyllite, Ba Na Na 3 Ti 3 (Si 2 O 7 ) 2 O 2 (OH) 2 . We explain why, for lamprophyllite, barytolamprophyllite and nabalamprophyllite, the chemical composition of the I block is of the form (A 2...
FIGURES
Journal Article
Published: 01 September 2023
South African Journal of Geology (2023) 126 (3): 261–274.
..., the rock carries indicator minerals typical of agpaitic rocks (including lamprophyllite and eudialyte-group minerals and their replacement products). The rock contains abundant crystal fragments of felsic minerals (alkali feldspar, nepheline and sodalite), fragments and elongated lenses of nepheline...
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Crystallographic data for <span class="search-highlight">lamprophyllite</span>-2 O  and <span class="search-highlight">lamprophyllite</span>-2 M .
Published: 01 July 2003
Table 1. Crystallographic data for lamprophyllite-2 O and lamprophyllite-2 M .
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Selected bond lengths (Å) for <span class="search-highlight">lamprophyllite</span>-2 O  and <span class="search-highlight">lamprophyllite</span>-2 M ....
Published: 01 July 2003
Table 4. Selected bond lengths (Å) for lamprophyllite-2 O and lamprophyllite-2 M .
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Numbers of electrons and occupancies for cation positions in <span class="search-highlight">lamprophyllite</span>...
Published: 01 July 2003
Table 5. Numbers of electrons and occupancies for cation positions in lamprophyllite-2 O and lamprophyllite-2 M .
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Bond-valence sums (v.u.) for atoms in <span class="search-highlight">lamprophyllite</span>-2 O  and <span class="search-highlight">lamprophyllit</span>...
Published: 01 July 2003
Table 6. Bond-valence sums (v.u.) for atoms in lamprophyllite-2 O and lamprophyllite-2 M .
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<span class="search-highlight">Lamprophyllite</span> Group: linkage 1 of H and O sheets in <span class="search-highlight">lamprophyllite</span> ( a ), ...
Published: 01 December 2017
Fig. 5. Lamprophyllite Group: linkage 1 of H and O sheets in lamprophyllite ( a ), the basic crystal structures of lamprophyllite ( b ), epistolite ( c ) and vuonnemite ( d ). Legend as in Fig. 3 ; Ti, [6,8] Na and [4] Na polyhedra are pale yellow, navy blue and turquoise, respectively; P
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Residual peaks in the difference-Fourier map of <span class="search-highlight">lamprophyllite</span>-2 O  related...
Published: 01 July 2003
Table 2b. Residual peaks in the difference-Fourier map of lamprophyllite-2 O related to lamprophyllite-2 M .
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The crystal structures of <span class="search-highlight">lamprophyllite</span>-2 M  (a) and <span class="search-highlight">lamprophyllite</span>-2 O  p...
Published: 01 July 2003
Fig. 1. The crystal structures of lamprophyllite-2 M (a) and lamprophyllite-2 O projected along the b axis.
Journal Article
Published: 01 April 2011
The Canadian Mineralogist (2011) 49 (2): 587–594.
...+ . Ferroericssonite is a member of the lamprophyllite group. Abstract La ferroericssonite, de composition idéale BaFe 2+ 2 Fe 3+ (Si 2 O 7 )O(OH), est une nouvelle espèce minérale découverte aux concessions minières Esquire #7 et #8, situées le long de Big Creek dans la partie orientale du comté de Fresno, et...
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Journal Article
Published: 01 April 2010
The Canadian Mineralogist (2010) 48 (2): 279–290.
... Peninsula, Russia. The mineral occurs as equant (100) platy and [001] elongate prismatic crystals up to 0.5–1 mm and aggregates up to 2–3 mm sporadically scattered in a pegmatite matrix. Associated minerals are sodalite, aegirine, arfvedsonite, pectolite, shcherbakovite, lamprophyllite, lomonosovite...
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