From Surf Wiki (app.surf) — the open knowledge base

Euxenite

Oxide mineral

Field	Value
name	Euxenite
category	Oxide minerals
image	Euxenite - Vegusdal, Norvegia 01.jpg
imagesize	260px
caption	Euxenite from Norway, around 11 cm of size
formula
IMAsymbol	Eux
strunz	4.DG.05
system	Orthorhombic
symmetry	Pcmn (no. 62)
color	Black, brownish black, greenish black
habit	Massive, anhedral crystals in matrix
twinning	Common on [201]
cleavage	None
fracture	Conchoidal to subconchoidal
mohs	5.5 to 6.5
luster	Brilliant submetallic, waxy to resinous on fractures
refractive	n = 2.06 – 2.24
opticalprop	Isotropic
streak	Yellowish, grayish, or reddish brown
gravity	4.7 to 5
diaphaneity	Opaque, translucent on thin edges
other	Metamict – originally crystalline, now amorphous due to radiation damage. [[Image:Radioactive.svg	25px]] Radioactive
references

Euxenite, or euxenite-(Y) (the official mineralogical name), is a brownish black mineral with a metallic luster.

Chemistry

It contains calcium, niobium, tantalum, cerium, titanium, yttrium, and typically uranium and thorium, with some other metals. The chemical formula is . It is commonly partially amorphous due to radiation damage.

Euxenite forms a continuous series with the titanium rich polycrase-(Y) having the formula .

Name and discovery

It was first described in 1870 and named for from the Greek (εὔξενος), hospitable or friendly to strangers, in allusion to the many rare elements that it contains.

Occurrence

It occurs in granite pegmatites and detrital black sands.

It is found in many locations worldwide, notably its type locality in Jølster, Sunnfjord, Norway.

Use

Euxenite is used as an ore of the rare earth elements it contains. Rare large crystals have also been used in jewelry.

References

Warr, L.N.. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine.
http://rruff.geo.arizona.edu/doclib/hom/euxenitey.pdf Minderal Handbook
http://webmineral.com/data/Euxenite-(Y).shtml Webmineral data
http://www.mindat.org/min-1425.html Mindat
Other locations include the [[Ural Mountains]] of [[Russia]]; [[Sweden]]; [[Minas Gerais]], [[Brazil]]; Ampangabe, [[Madagascar]]; [[Ontario, Canada]]; and in [[Arizona]], [[Wyoming]] and [[Colorado]] in the US.http://www.galleries.com/minerals/oxides/euxenite/euxenite.htm Mineral Galleries

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

calcium-minerals thorium-minerals uranium-minerals lanthanide-minerals niobium-minerals tantalum-minerals titanium-minerals yttrium-minerals cerium-minerals oxide-minerals orthorhombic-minerals minerals-in-space-group-62 minerals-described-in-1870

Want to explore this topic further?

Ask Mako anything about Euxenite — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report