What is samarskite used for?
Samarskite can be cut into attractive gems and used as cabochons, although since the stones are slightly radioactive, their use as wearable gemstones should be quite …well… risky! As mineral specimens, samarskite can be a nice addition to one’s collection. Good crystals are rare, but prized when found.
Where is samarskite found?
Samarskite occurs in granite pegmatites with other rare minerals. Samarskite was first described in 1847 for an occurrence in Miass, Ilmen Mountains, Southern Ural Mountains of Russia. The chemical element samarium was first isolated from a specimen of samarskite in 1879.
What is the formula of samarskite?
Samarskite-(Y) Mineral Data
| General Samarskite-(Y) Information | |
|---|---|
| Chemical Formula: | (Y,Fe+++,U)(Nb,Ta)5O4 |
| Calculated Properties of Samarskite-(Y) | |
| Electron Density: | Bulk Density (Electron Density)=5.01 gm/cc note: Specific Gravity of Samarskite-(Y) =5.70 gm/cc. |
| Fermion Index: | Fermion Index = 0.02 Boson Index = 0.98 |
Where is uraninite found?
Uraninite has been obtained from hydrothermal vein deposits, such as those at Jáchymov and in adjacent places in the Ore Mountains (Erzgebirge) in Germany. Other vein deposits occur at Great Bear Lake in the Northwest Territories of Canada and in the Lake Athabasca district of Alberta and Saskatchewan.
What is Euxenite used for?
Use. Euxenite is used as an ore of the rare earth elements it contains. Rare large crystals have also been used in jewelry.
What is monazite made of?
Monazite is a brown crystalline mineral consisting of cerium, lanthanum, other rare earth elements, and thorium. Monazite usually occurs in small, isolated crystals or grains that are resistant to weathering and become concentrated in soils and sediments downslope from the host rock.
Is uraninite a rock or mineral?
Uraninite, formerly pitchblende, is a radioactive, uranium-rich mineral and ore with a chemical composition that is largely UO2 but because of oxidation typically contains variable proportions of U3O8.
What is Euxenite made of?
euxenite, complex oxide mineral, a niobate–titanate that forms hard, brilliant black crystals and masses in granite pegmatites and associated detrital deposits. Titanium replaces niobium–tantalum in the molecular structure to form the similar mineral polycrase; both it and euxenite often contain rare earths.
Is Samarskite a rare earth element?
Uses: A minor ore of rare earth elements and uranium, sometimes cut as a gemstone and as mineral specimens. Samarskite, whose exact name is samarskite- (Y) (the Y is for the yttrium), is one of several Rare Earth Oxides. These rare earth oxides form from the leftover elements that other minerals seem to not want.
What is samarskite?
Samarskite is found in rare earth rich granite pegmatites, a slow cooling igneous intrusive rock. Samarskite is associated with quartz , feldspars , columbite , tantalite and other rare earth minerals. Samarskite is common enough and locally abundant enough that it has potential to be a valuable resource for its rare earth metals.
What is the chemical formula for samarskite?
Samarskite is a radioactive rare earth mineral series which includes samarskite- (Y), with the chemical formula ( Y Fe3+Fe2+U,Th,Ca)2(Nb,Ta)2O8 and samarskite- (Yb), with the chemical formula ( Yb Fe3+)2(Nb,Ta)2O8. The formula for samarskite- (Y) is also given as (Y,Fe3+,U) (Nb,Ta)O4.
What is Samarskii Bykhovets?
Named in honor of Colonel Vasilii Yevgrafovich Samarskii-Bykhovets (Васи́лий Евгра́фович Сама́рский-Быховец) (7 November 1803 – 31 May 1870), Russian mining engineer and Chief of Staff of the Russian Corps of Mining Engineers, for granting access to some mineral samples for study.
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