...Andrew M. McDonald; Peter Tarassoff; George Y. Chao Abstract Hogarthite, (Na,K) 2 CaTi 2 Si 10 O 26 ·8H 2 O, a new mineral of the lemoynite group, was discovered in vugs within metasomatically altered marble xenoliths in the Poudrette quarry, Mont Saint-Hilaire, La-Vallée-du-Richelieu RCM...

...Andrew M. McDonald; George Y. Chao Abstract La natrolemoynite est un nouveau membre du groupe de la lemoynite, découverte dans des pegmatites altérées ou non recoupant des syénites néphéliniques dans la carrière Poudrette, au mont Saint-Hilaire, Québec. Dans le cas des pegmatites altérées...

...Guy Perrault; E. I. Semenov; A. V. Bikova; T. A. Capitonova La lemoynite correspond à la formule chimique (Na, Ca) 3 Zr 2 Si 8 O 22 .8H 2 O. L'analyse chimique a donné: SiO 2 47.32%, ZrO 2 23.23, TiO 2 0.43, Nb 2 O 5 2.18, TR 2 O 3 1.18, Fe 2 O 3 1.61, MnO 0.10 CaO 5.06, Na 2 O 4.75, H 2 O 13.33...

... different as well as lemoynite (bottom spectrum, with lower ZrSi distances). (b) Fourier transforms of the spectra shown in Fig. 3a, showing the two contributions around Zr: O first and Si next-nearest neighbours in glasses and zirconosilicates (distances are uncorrected for backscattering phase-shift...

...) 2 CaTi 2 Si 10 O 26 •8H 2 O, a new member of the lemoynite group from Mont Saint-Hilaire, Quebec: characterization, crystal-structure determination, and origin . Canadian Mineralogist 53 , 13 – 30 . ...

...F ig . 30. The silicate unit in the structure of lemoynite ; ( a ) the upper-layer net consisting of a (6 3 ) 2 parent net (vertices shown in red) with pairs of 2-connected vertices (in blue and pink) inserted along four of the six edges of the parent net, resulting in a (14 3 ) 12 net; ( b...

... to the Zr-zeolite family together with catapleiite (Na 2 ,Ca)Zr(Si 3 O 9 )·2H 2 O ( Ilyushin et al. 1981a ), gaidonnayite Na 2 Zr(Si 3 O 9 )·2H 2 O ( Chao 1973 ), hilairite Na 2 Zr(Si 3 O 9 )·3H 2 O ( Ilyushin et al. 1981b ), elpidite Na 2 Zr(Si 6 O 15 )·3H 2 O ( Cannillo et al. 1973 ), lemoynite (Na 2 Ca...

... of esquireite is unique, although several other silicate minerals contain thick layers of tetrahedra in their structures: amstallite, kvanefjeldite, lemoynite, and chiappinoite-(Y). The name esquireite is for one of the type localities, the Esquire #1 claim. Five cotype specimens have been deposited...

.... Phys. Dokl. , 21 , 240 – 242 . Le Page Y. Perrault G. ( 1976 ): Structure cristalline de la lemoynite, (Na,K) 2 CaZr 2 Si 10 O 26 · 5-6H 2 O . Can. Mineral , 14 , 132 – 138 . Mandarino J.A. ( 2007 ): The Gladstone–Dale compatibility of minerals and its use in selecting...

... = 9.1029(3) Å, β = 105.462(2)°. Strongest lines of the powder pattern (114 mm Debye–Scherrer, Cu K α radiation) are 8.132(100,020), 5.975(40,021), 3.974 (35,201), 3.564(40,221), and 3.490(35, 2̅22). The mineral is associated with microcline, lemoynite, lepidocrocite, galena, sphalerite, calcite...

... of at least three new species (lemoynite, steacyite, and yofortierite). The mineral and mineral name were approved by the Commission on New Minerals, Nomenclature, and Classification of the International Mineralogical Association (IMA 2018-168). The holotype specimen is deposited in the collections...

.... 1983 ), lemoynite ( Le Page & Perrault 1976 ), and chiappinoite-(Y) ( Kampf & Housley 2014 ). Associate Editor James Evans, reviewer Frank Hawthorne, and an anonymous reviewer are thanked for their constructive comments on the manuscript. The Caltech EMP analyses were supported...

... nepheline syenite. Associated minerals in altered pegmatites are: microcline, lemoynite, lepidocrocite, galena, sphalerite, calcite and pyrite. Associated minerals in unaltered pegmatites are: biotite, microcline, albite, magnetite, a chlorite-group mineral, a burbankite-group mineral, an unidentified...