Minerals identify

Know how to recognize them

Xenotime

Phosphate mineral

Xenotime is a rare-earth , the major component of which is yttrium orthophosphate (Y P 4). It forms a solid solution series with chernovite-(Y) 4) and therefore may contain trace impurities , as well as silicon dioxide. The rare-earth elements , erbium, as well as metal elements such as thorium (all replacing yttrium) are the expressive secondary components of xenotime. Due to uranium and thorium impurities, some xenotime specimens may be weakly to strongly radioactive , monazite are sometimes grouped with xenotime in the informal "anhydrous phosphates" group. Xenotime is used chiefly as a source of yttrium and heavy lanthanide metals (dysprosium, ytterbium, erbium and gadolinium). Occasionally, gemstones are also cut from the finest xenotime crystals.

Identification

Color of mineral

Brown
Yellow
Grey

Mohs scale ( mineral hardness )

4.5

The streak

Red
Brown
Yellow
White

Density ( specific gravity )

1.72

Luster ( interacts light )

Resinous
Vitreous

Crystal ( diaphaneity )

Tetragonal