Allanite - Wikipedia
Allanite (also called orthite) is a sorosilicate group of minerals within the broader epidote group that contain a significant amount of rare-earth elements. The mineral occurs mainly in metamorphosed clay-rich sediments and felsic igneous rocks.
Allanite : Properties, Compositons, Uses, Locatlions - Geology …
2024年7月1日 · Definition: Allanite is a mineral group within the epidote supergroup, characterized by its black to brownish-black color and often prismatic crystal habit. It has a general formula represented as (Ca,REE,Th) (Al,Fe)3 (SiO4)3 (OH), with REE indicating rare earth elements.
Review of allanite: Properties, occurrence and mineral processing ...
2024年3月1日 · Allanite is commonly encountered as an accessory rare-earth silicate mineral in association with minerals such as garnet, biotite, and feldspar. It is distributed globally and occurs in igneous formations such as granites, pegmatites, and syenites, as well as in various metamorphic rocks such as schist, gneiss, and amphibolite.
25 Facts About Allanite
2024年9月21日 · Allanite is a rare earth element (REE) mineral that stands out due to its unique properties and significant industrial applications. Discovered in 1810 and named after Scottish mineralogist Thomas Allan, this mineral is a key source …
Allanite-(Ce) Mineral Data
Physical Properties of Allanite- (Ce) Brown, Reddish brown, Black. Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). Disseminated - Occurs in small, distinct particles dispersed in matrix.
Allanite: thorium and light rare earth element carrier in subducted ...
2002年12月30日 · Allanite makes up only 0.1–0.2% of the rock but contains more than 90% of bulk LREE and Th. Allanite is also the most important host for U (75–80%) and has also the highest Pb and Sr contents of all eclogite minerals.
Allanite - ALEX STREKEISEN
Allanite is a characteristic accessory mineral in many granites, granodiorites, monzonites and syenites; it occurs in larger amounts in some limestone skarns and in pegmatites. Optical properties: • Color: In a fresh stage pale grey-yellow to …
(PDF) Allanite and Other REE-Rich Epidote-Group Minerals
2004年1月1日 · Epidote-group minerals rich in rare earth elements (REE), in particular allanite, are common accessory phases in igneous, metamorphic, metasomatic, and sedimentary rocks.
Allanite and Other REE-Rich Epidote-Group Minerals
2004年1月2日 · Epidote-group minerals rich in rare earth elements (REE), in particular allanite, are common accessory phases in igneous, metamorphic, metasomatic, and sedimentary rocks.
Allanite: Mineral information, data and localities. - mindat.org
This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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