RC Ewing - Canadian Mineralogist, 1976 - canmin.geoscienceworld.org ABSTRACT Since their initial description in the early l80o's, orthorhombic,
rare-earth, ABsOa-tyW, Nb-Ta-Ti oxides have been a "mineralogical headache". Due
to complex compositions, their metamict state and pervasive alteration, as ... Cited by 13 - Related articles
RC Ewing, AJ Ehlmann - Canadian Mineralogist, 1975 - canmin.geoscienceworld.org ASSTRACT Metamict, orthorhombic, ABrO6-type, Nb-Ta-Ti oxides were annealed over
the temperature range 400-1100"C in air. Each charge was air-quenched at 50'C
intervals aad esaminsd by x-ray powder diffraction. The following phases ... Cited by 6 - Related articles
P Bonazzi, S Menchetti - European Journal of Mineralogy, 1999 - eurjmin.geoscienceworld.org Fourier map. The addition of the C site to the structural model significantly
improved the final R factors in all refined samples. The C site is
asymmetrically located within an eight-fold cavity, similar in shape to ... Cited by 6 - Related articles - All 2 versions
RC Ewing - Geochimica et Cosmochimica Acta, 1975 - adsabs.harvard.edu Primary and secondary alteration affect composition, physical properties and the
results of annealing studies of metamict, rare-earth, AB 2 O 6 -type Nb-Ta-Ti
oxides. Primary alteration (eg hydrothermal) causes a consistent increase ... Cited by 11 - Related articles
[CITATION] Non-metamict Ti-rich aeschynite-(Y) from the Triolet Valley (Western Alps, Italy)
P Bonazzi, S Magnanelli - NEUES JAHRBUCH FUR MINERALOGIE …, 1994 - SCHWEIZERBART'SCHE VERLAGSBUCHHANDLUNG Cited by 4 - Related articles - BL Direct
- ►arizona.edu [PDF] N Tomasic, A Gajovic, V Bermanec, M Rajic - Canadian mineralogist, 2004 - canmin.geoscienceworld.org Metamict aeschynite-(Y) and polycrase-(Y) were studied by X-ray diffraction and
Raman spectroscopy. To restore their crystal structure, the mineral samples were
heated at various temperatures in air. The temperatures of 400, 500, 650, ... Cited by 4 - Related articles - All 6 versions
P Bonazzi, M Zoppi, L Dei - European Journal of Mineralogy, 2002 - eurjmin.geoscienceworld.org To study the possible structural-geometrical variations affecting the structure
of aeschynite when heated in air, the heat-induced recrystallization process of
a metamict sample from Evje-Iveland was monitored by recording X-ray powder ... Cited by 4 - Related articles - BL Direct - All 4 versions
S Graeser, H Schwander, H Hänni, V Mattioli - Mineralogical Magazine, 1979 - minersoc.org Summary: A new mineral species, vigezzite (Ca,Ce) (Nb,Ta,Ti) 2 O 6 , was found
near Orcesco, Valle Vigezzo, Prov. Novara, Northern Italy. It forms fiat
prismatic crystals up to 2–3 mm length of an orange-yellow colour. The ... Cited by 5 - Related articles - Cached
[CITATION] A crystalline variety of lyndochite
SA Gorzhevskaya, GA Sidorenko - Dokl. Akad. Sci. USSR, Earth Sci. Sect, 1962 Cited by 6 - Related articles
- ►arizona.edu [PDF] TS Ercit - Canadian Mineralogist, 2005 - canmin.geoscienceworld.org The (Y,REE,U,Th)–(Nb,Ta,Ti) oxide minerals in REE-enriched granitic pegmatite
and A- and I-type granites are primarily comprised of the fergusonite,
samarskite, euxenite, aeschynite and pyrochlore groups. They are typically ... Cited by 6 - Related articles - BL Direct - All 6 versions
