 | | Journal (article/letter/editorial) | | The Trimouns Quarry Luzenac, Ariège, France Freddy Marty Rue de l’Hôpital 11230-Chalabre France In recent...recent decades, the Trimouns quarry has become well known as a source of outstanding crystals of several... including familiar species such as allanite, parisite and bastnäsite, as well as very rare ones such...contact zone of the Trimouns talc/chlorite deposit, where large-scale mining for talc may now be approaching...approaching its end. INTRODUCTION The Trimouns talc-chlorite deposit is a mineral locality of international |  | | Report (issue) | | Bastnäsite-(Ce) (Ce, La)(CO3)F c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Hexagonal...intergrowth with röntgenite-(Ce), synchysite-(Ce), parisite-(Ce), or cordylite-(Ce), to 20 cm; granular, massive...Hardness = 4–4.5 D(meas.) = 4.9–5.2 D(calc.) = 5.12 (for Ce(CO3 )F). Strongly piezoelectric; dark red cathodoluminescence...La0.37 Nd0.10 Pr0.04 Sm0.01 )Σ=1.00 (CO3 )F. (3) (Ce, La)(CO3 )F with Ce:La = 1:1. Polymorphism & Series:...polytypes; forms a series with hydroxylbastnäsite-(Ce). Occurrence: The most abundant RE-bearing mineral |  | | Report (issue) | | Synchysite-(Ce) Ca(Ce, La)(CO3)2 F c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Monoclinic...intergrowths k {0001} with bastnäsite-(Ce), parisite-(Ce), röntgenite-(Ce), cordylite, to 6 cm. Twinning: On...14 [5.73] 2.41 Total [100.36] (1) Trimouns talc deposit, France; by electron microprobe, average of...ewaldite, belovite-(Ce), fluorite, nenadkevichite, ancylite-(Ce), kukharenkoite-(Ce), mckelveyite-(Y),...Austria. In the Trimouns talc deposit, six km northeast of Luzenac, Ariège, France. In Russia, rock-forming |  | | Report (issue) | | Parisite-(Ce) Ca(Ce, La)2(CO3 )3 F2 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Monoclinic...pseudo-{0001} with bastnäsite-(Ce), synchysite-(Ce), röntgenite-(Ce), cordylite, to 24 cm. Physical...Pattern: Mont Saint-Hilaire, Canada; identical with parisite-(Nd). 3.565 (100), 2.838 (100), 2.060 (80), 1...Nd0.37 Pr0.10 Sm0.05 )Σ=1.96 (CO3 )3 F1.51 . (3) Ca(Ce, La)2 (CO3 )3 F2 with Ce:La = 1:1. Polymorphism &... Norway. In the Trimouns talc deposit, six km northeast of Luzenac, Ariège, France. From Monterfano |  | | Journal (issue) | | Associate Editors Pierre Bariand Sorbonne Paris , France Bill Birch Museum of Victoria Melbourne, Australia...Pierre-Nicolas Schwab Orleans , France The Trimouns Quarry, Luzenac, Ariege, France ...................... 225...Associate Photographers Nelly Bariand Sorbonne Paris, France Dan Behnke Northbrook, IL Werner Lieber Heidelberg...RECORD COVER: (center) ALLANITE(Ce) crystal, 6 mm; (upper right) PARISITE-(Ce) crystal, 5.5 mm; (lower left)...IIMORIITE-(Y) crystal, 2 mm-All from the Trimouns talc quarry near Luzenac, France (see the article beginning on |  | | Journal (article/letter/editorial) | | Mössbauer spectroscopy. Cerite-(Ce) is, together with ferriallanite-(Ce), the most important REE mineral...occurrences worldwide, the present samples of cerite-(Ce) are poor in Ca and enriched in Mg and F. Calcium...apfu, and is mainly in the trivalent state. Cerite-(Ce) is a major carrier of Y (up to 3.5 wt.% Y2O3). Fluorbritholite...in REE and Y occur, ranging from fluorbritholite-(Ce) to the unaccredited member “fluorbritholite-(Y)”...with Ca < 2 and (REE + Y) > 3 apfu. Västmanlandite-(Ce) is another important host for the REE in subtype |  | | Book | | IIMORIITE-(Y) EUROPE FRANCE Trimouns quarry, Luzenac, Ariege. Operated for talc since the beginning of...of the 20th century, the Trimouns quarry became well known to collectors around 1990 for the superb specimens...yttrium silicate-carbonate iimoriite-(Y) occurs at Trimouns as colorless, pink and pale brown, translucent...crystalline talc. Easily the best extant crystal, a doubly terminated floater found in a talc vug in 1997...Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's |  | | Book | | 1000° Mots inc. Native Gold on Quartz, Paymaster mine, South Porcupine, Ontario / Photo by Brian Boyle...Marquis imprimeur inc. Barite on Quartz, Rock Candy mine, Grand Forks, British Columbia / Photo by Ken Mayer...Mayer Publisher Pyromorphite, Society Girl mine, Moyie, British Columbia / Photo by Ken Mayer Mineralogical... Ontario Canada Diopside on Grossular, Jeffrey mine, Asbestos, Quebec / Photo by Jeffrey A. Scovil...overflow —_Lat. fluere, to flow Old English ca.450-1050 CE krup-yo, to conceal, hide Gk. kryptein, to hide |  | | Book | | Canada (16), People's Republic of China (11), and France (10). These numbers do not necessarily reflect...of a Russian mineral). However, in the case of France, the majority of the ten species were described...Brazil Bulgaria Canada Chile Czech Republic Finland France Germany Greece India Italy Japan Kazakhstan Kyrgyzstan... NEW MINERALS Abenakiite-( Ce) 1990-1994 Hexagonal (trigonal) Na26 (Ce,REEMSi0 3 MP0 4 MC0 3 MS4+0...mangan-neptunite, polylithionite, serandite and steenstrupine-(Ce). General appearance: An ellipsoidal crystal approximately |  | | Book (edition) | | 9055 89 Ac 43 r-- V 1 1 1 � 3p 111 B Ce Pr 60 Ce• 11•n 1.:".) 1:, P•J'.,V'.>:l,n •'1 1.:� ')J�;...44. c 1 3 .50 A. A natural occurrence at a coal mine in the (TL) Lvov-Volynsk basin, USSR. Achates. syn...Data on new occurrence al Saint Pandclon. Landes. France. by B. Azambre and P. Monchoux ( 1 988) 8111/....alluding to its appearance. 18.2. 1 3 Aeschynite-(Ce). (Ce.Ca.Fc.Th)(Ti.Nb) i (O,OH) 6 • 1.1. BerL.elius...natural state. Forms two series. with niobo-acschynitc-(Ce) and with acschynite-(Y): dimorphouswith lucasitc-(Cc) |  | | Book | | O–H-stretching vibrations of some magnesium serpentines and talc. One cannot exclude that this band corresponds to...smectites, members of the kaolinite-serpentine group, talc, vermiculite, mixed-layer minerals) are important...groups (n = 0, 1, or 2). Based on the analogy with talc, it was supposed (Wilkins 1967) that the replacement...Dickite 3704, 3654, 3622 Nacrite 3703, 3647, 3629 Talc 3676, 3660w Pyrophyllite 3675, 3647w Muscovite...phenomenon was explained by the presence of the talc component Mg3(Si4O10)(OH)2. IR spectra of synthetic |
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Trimouns Talc Mine, Luzenac, Foix, Ariège, Occitanie, France