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tornebohmite

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Journal Article
Published: 01 May 2018
European Journal of Mineralogy (2018) 30 (3): 537-544.
...). The mineral occurs in direct contact with ferriallanite-(Ce), cerite-(Ce) and törnebohmite-(Ce). In the type specimen, ferriperbøeite-(Ce) forms brownish black crystals, and exhibits an irregular to short-prismatic morphology elongated along [0 1 0]. The maximum crystal size is about 500 µm. The mineral...
FIGURES | View All (6)
Journal Article
Published: 01 January 2014
American Mineralogist (2014) 99 (1): 157-169.
... primary phase; they are associated with allanite-(Ce), bastnäsite-(Ce), and intimately inter- or overgrown by törnebohmite-(Ce). Sub- to euhedral crystals, up to 400 μm in size, are chemically zoned between two near-end-member compositions that imply the existence of two new members of the polysomatic...
FIGURES | View All (7)
Journal Article
Published: 01 October 1982
American Mineralogist (1982) 67 (9-10): 1021-1028.
...Shen Jinchuan; Paul Brian Moore Abstract Tornebohmite, RE 2 Al(OH)[SiO 4 ] 2 , monoclinic, a = 7.383(3), b = 5.673(3), c = 16.937(6)Å, β = 112.04(2)°, Z = 4, space group P 2 1 / c , is structurally allied to the brackebuschite and pyrobelonite groups of minerals. It is isostructural with fornacite...
Image
SEM-BSE images showing minute lamellae of <b>törnebohmite</b>-(Ce) (light grey, bl...
Published: 01 January 2019
Fig. 4 SEM-BSE images showing minute lamellae of törnebohmite-(Ce) (light grey, black arrow) intergrown with lamellae of a member of the perbøeite-(Ce)–alnaperbøeite-(Ce) solid solution (dark grey, red arrow) in the samples from Stetind (Tysfjord, Norway). Intermediate grey lamellae likely
Journal Article
Published: 01 January 2019
European Journal of Mineralogy (2019) 31 (1): 173-181.
...Fig. 4 SEM-BSE images showing minute lamellae of törnebohmite-(Ce) (light grey, black arrow) intergrown with lamellae of a member of the perbøeite-(Ce)–alnaperbøeite-(Ce) solid solution (dark grey, red arrow) in the samples from Stetind (Tysfjord, Norway). Intermediate grey lamellae likely...
FIGURES | View All (5)
Image
( a ) La+Ce vs. (Other REE)+Ca+Mg+Th+U variation in <b>törnebohmite</b>-(Ce). ( b ...
Published: 01 October 2015
Figure 11 ( a ) La+Ce vs. (Other REE)+Ca+Mg+Th+U variation in törnebohmite-(Ce). ( b ) Y+REE vs. Ca+Mg+Sr variation in cerite-(Ce). ( c ) Ce-La-Nd ternary diagram for bastnäsite-(Ce) analyses. Variations of ( d ) Si vs. P and ( e ) Y+REE vs. Ca+Fe+Sr+Mg in fluorbritholite-(Ce).
Journal Article
Published: 01 October 2015
American Mineralogist (2015) 100 (10): 2123-2140.
...Figure 11 ( a ) La+Ce vs. (Other REE)+Ca+Mg+Th+U variation in törnebohmite-(Ce). ( b ) Y+REE vs. Ca+Mg+Sr variation in cerite-(Ce). ( c ) Ce-La-Nd ternary diagram for bastnäsite-(Ce) analyses. Variations of ( d ) Si vs. P and ( e ) Y+REE vs. Ca+Fe+Sr+Mg in fluorbritholite-(Ce). ...
FIGURES | View All (13)
Image
The aluminosilicate chains in schlüterite-(Y), <b>törnebohmite</b>-(Ce), allanite-...
Published: 01 April 2013
F ig . 6. The aluminosilicate chains in schlüterite-(Y), törnebohmite-(Ce), allanite-(Ce) and gatelite-(Ce); legend as in Fig. 4 .
Journal Article
Published: 28 February 2017
European Journal of Mineralogy (2017) 29 (5): 897-905.
... for the first time. Associated minerals in the only known sample, from the Nya Bastnäs Fe–Cu–REE deposit (Västmanland, Sweden), include cerite-(Ce), tremolite‒actinolite, percleveite-(Ce), bastnäsite-(Ce), ferriallanite-(Ce), törnebohmite-(Ce), magnetite, chalcopyrite, quartz and scheelite. Delhuyarite-(Ce...
FIGURES
Journal Article
Published: 01 June 1940
American Mineralogist (1940) 25 (6): 381-404.
... the cerite rock and minute grains of uraninite (pitchblende) and pyrite are locally present. Microscopic examination of the cerite rock shows it to be finely intergrown with varying amounts of allanite, brown epidote, törnebohmite, fluorite, bastnäsite, monazite, uraninite, and quartz. An analysis...
Image
MicroCT-scan image of a crystal of ferriperbøeite-(Ce) (blue) intergrown wi...
Published: 01 May 2018
Fig. 2 MicroCT-scan image of a crystal of ferriperbøeite-(Ce) (blue) intergrown with törnebohmite-(Ce) (green).
Image
Crystal structure of gatelite-group minerals seen as a regular alternation ...
Published: 01 January 2019
Fig. 1 Crystal structure of gatelite-group minerals seen as a regular alternation of (001) epidote-type slabs ( E ) and (−102) törnebohmite-type slabs ( T ). Unit cell corresponds to that of gatelite-(Ce) ( P 2 1 / a ).
Image
Backscattered electron image of perbøeite-(Ce) (medium gray) and törnebohmi...
Published: 01 January 2014
Figure 2 Backscattered electron image of perbøeite-(Ce) (medium gray) and törnebohmite-(Ce) (light gray) intergrowths within a matrix of yttrian fluorite (dark gray). Sample ST4, Stetind.
Image
Top: General view (incident light image) of the type specimen of ferriperbø...
Published: 01 May 2018
Fig. 1 Top: General view (incident light image) of the type specimen of ferriperbøeite-(Ce), #52:414 deposited at the Swedish Museum of Natural History. Size ca. 7.5 × 6 × 4 cm. Bottom: Field-emission SEM image of a polished section with ferriperbøeite-(Ce) (fpb) associated with törnebohmite
Image
Crystal structure of ferriperbøeite-(Ce) seen as a regular alternation of (...
Published: 01 May 2018
Fig. 6 Crystal structure of ferriperbøeite-(Ce) seen as a regular alternation of (0 0 1) epidote-type slabs (E) and ( 1 ¯  0 2) törnebohmite-type slabs (T). E  =   A1 A2 M1 M2 M3[(Si 2 O 7 )(SiO 4 )]O(OH) ; T  =   A3 A4 M2[SiO 4 ] 2 (OH).
Image
Chondrite-normalized REE-pattern of REE-minerals. ( a ) Averages for each R...
Published: 01 October 2015
Figure 12 Chondrite-normalized REE-pattern of REE-minerals. ( a ) Averages for each REE-mineral. ( b–e ) Variations for each REE mineral ( b ) in the rim zone 1 and 2 [allanite-(Ce), monazite-(Ce)], ( c ) in the intermediate zone 3 [cerite-(Ce), törnebohmite-(Ce)], ( d ) in the core zone zone 4
Image
Composite color X-ray maps characterizing the variation and spatial relatio...
Published: 01 October 2015
= K-feldspar; Mnz = monazite-(Ce); Pl = plagioclase; Qz = quartz; törn. = törnebohmite-(Ce); F-brit. or F-britholite = fluorbritholite-(Ce). ( a ) X-ray map of a thin vein (from Fig. 3b ) from rim to rim. Red = Si, green = Ca, blue = La. ( b ) High-resolution detail of rim for region indicated
Journal Article
Published: 01 April 2014
American Mineralogist (2014) 99 (4): 876.
... © 2014 Mineralogical Society of America 2014 Perbøeite-(Ce) and alnaperbøeite-(Ce), two new members of the epidote-törnebohmite polysomatic series: Chemistry, structure, dehydrogenation, and clue for a sodian epidote end-member by P. Bonazzi, G.O. Lepore, L. Bindi, C. Chopin, T...
Journal Article
Published: 01 April 2013
Mineralogical Magazine (2013) 77 (3): 353-366.
...F ig . 6. The aluminosilicate chains in schlüterite-(Y), törnebohmite-(Ce), allanite-(Ce) and gatelite-(Ce); legend as in Fig. 4 . ...
FIGURES | View All (6)
Journal Article
Published: 01 May 2018
European Journal of Mineralogy (2018) 30 (3): 411-412.
...-törnebohmite from the Nya Bastnäs Fe-Cu-REE deposit, Sweden . Eur. J. Mineral. , 30 , DOI: 10.1127/ejm/2018/0030-2717 . Birch , W.D. ( 2018 ): Minerals in the arrojadite, alluaudite and jahnsite-whiteite groups from the Mount Wills pegmatite field, Victoria, Australia . Eur. J. Mineral...