Euxenite, or euxenite- (Y) (the official mineralogical name), is a brownish black mineral with a metallic luster. It contains calcium, niobium, tantalum, cerium, titanium, yttrium, and typically uranium and thorium, with some other metals. The chemical formula is (Y, Ca, Ce, U, …

Minerals of the Euxenite- (Y)-Polycrase- (Y) series are the most widespread niobates after columbite- (Fe) and pyrochlore. Euxenite- (Y) is typically metamict. Compare Nioboaeschynite- (Y) which has different space-group symmetry. Compare also Fergusonite- (Y).

2024年10月15日 · Euxenite- (Y) is a fascinating mineral that often goes unnoticed. Found in granite pegmatites, this mineral is a complex oxide containing rare earth elements like yttrium, erbium, and thorium. Euxenite- (Y) typically appears in shades of brown to black, with a submetallic to resinous luster.

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.

Euxenite, which is sometimes named euxenite- (Y) (the Y is for the yttrium), is a mineral that is sometimes called a "trash can mineral". Because it will accommodate a wide variety of elements in its crystal structure, generally the elements that …

From the Greek for "friendly to strangers, hospitable," in allusion to the rare elements that it contains. Comments: Crystal of euxenite- (Y) in matrix. Location: Trout Creek Pass, Chaffee County, Colorado, USA. Scale: Crystal size 1.5 cm. Brownish black, Brown, Yellow, Olive green.

Euxenite is a mineral that is commonly found in granite pegmatites and black sand deposits. It has an orthorhombic crystallographic system and appears as stout large prismatic crystals with a greenish grey reflection color.

Optical Properties: Opaque, translucent on thin edges. Color: Black, brownish black, greenish black; brown to yellow-brown in transmitted light. Streak: Yellowish, grayish, or reddish brown. Luster: Brilliant submetallic, waxy to resinous on fractures. Pcmn (synthetic YNbTiO6). X-ray Powder Pattern: Risør, Norway; after heating at 1200 C.

2014年3月11日 · Euxenite, which is sometimes named euxenite-(Y) (the Y is for the yttrium), is a mineral that is sometimes called a “trash can mineral”. Because it will accommodate a wide variety of elements in its crystal structure, generally the elements that other minerals do not seem to want, ie the “trash”.

Euxenite- (Y) is a very unusual mineral that is radioactive belongs to the Polycrase Group of minerals that includes Euxenite- (Y), Polycrase- (Y) and Yttrocrasite- (Y). Due to the earth that is unusual in its structure, Euxenite is one of several minerals called “Rare Earth Oxides”.