Gadolinite - Wikipedia
Gadolinite, sometimes known as ytterbite, is a silicate mineral consisting principally of the silicates of cerium, lanthanum, neodymium, yttrium, beryllium, and iron with the formula (Ce,La,Nd,Y) 2 FeBe 2 Si 2 O 10. It is called gadolinite-(Ce) or gadolinite-(Y), depending on the prominent composing element (Y if yttrium predominates, and Ce if ...
Gadolinite- (Ce): Mineral information, data and localities.
In contrast to the Norwegian sample, gadolinite-(Ce) from the Malmkärra mine, Norberg, Sweden is U-free and Th-free and is non-metamict. This material shows normal anisotropic optical properties consistent with a monoclinic symmetry (non-zero birefringence; biaxial nature).
Gadolinite- (Nd): Mineral information, data and localities.
Named for its relationship to gadolinite-(Y), but with neodymium as the dominant rare earth element. Gadolinite honors Johan Gadolin (5 June 1760, Turku, Finland - 15 August 1852, Mynämäki, Finland), chemist, physicist, and mineralogist.
Gadolinite-(Y) Mineral Data
Pegmatite veins rich in alkaline-earth elements. IMA Status: Valid Species (Pre-IMA) 1800. Locality: Ytterby, Resarö, Sweden. Link to MinDat.org Location Data. Name Origin: Named after the Finnish chemist, Johan Gadolin (1760-1852), who discovered yttrium.
Gadolinium - Wikipedia
Physical properties. Gadolinium is the eighth member of the lanthanide series. In the periodic table, it appears between the elements europium to its left and terbium to its right, and above the actinide curium. It is a silvery-white, malleable, ductile rare-earth element.
Gadolinite-(Y) - mindat.org
A huge gadolinite crystal from one of the old classic locales for this species, and from the John Sinkankas collection. It weighs 583 grams and is a giant crystal - the big ones seldom maintain such sharp form.
Mineral Group: Gadolinite group. Occurrence: In granite and alkalic granite pegmatites. Association: Allanite, °uorite, fergusonite, yttrialite, chevkinite, zircon. Distribution: Numerous localities worldwide: in Sweden, from Ytterby, on ResarÄo …
Gadolinite-(Ce) Mineral Data
From a dump at Buer, nine km southeast of Skien, Bjorkendalen region, and in the Bakken quarry, Tvedalen, Norway. Link to MinDat.org Location Data. Named for its cerium content and the relationship to gadolinite- (Y). Comments: Sharp, well crystallized single crystal of …
Gadolinite- (Nd), a new member of the gadolinite supergroup …
Gadolinite-(Nd) forms anhedral grains up to 150 µm in size, occurring as aggregates associated with tremolite, dollaseite-(Ce), västmanlandite-(Ce), fluorbritholite-(Ce) and bastnäsite-(Ce) . Gadolinite-(Nd) is transparent and, under the optical microscope in thin section, it is pale olive green, while larger fragments are olive green.
Crystal chemistry and microfeatures of gadolinite imprinted by ...
Gadolinite [REE 2 Fe 2+ Be 2 Si 2 O 10] is a common mineral in certain types of rare element and rare earth element (REL-REE) pegmatites. Changes in pegmatite environment during and after gadolinite formation may be devised by studying its crystal-chemical properties and a thorough observation of microfeatures in the mineral matrix.