Wakefieldite-(La) | |
Category: | Rare-earth mineral |
Formula: | |
Imasymbol: | Wf-La[1] |
Strunz: | 8.AD.35 |
Dana: | 38.4.9.6 |
System: | Tetragonal |
Class: | Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m) |
Symmetry: | I41/amd |
Color: | Light pink, brown |
Habit: | Prismatic crystals |
Cleavage: | None Observed, possible |
Fracture: | Irregular |
Tenacity: | brittle |
Mohs: | 4 |
Luster: | Adamantine |
Streak: | white |
Diaphaneity: | Transparent, Translucent |
Gravity: | 4.703 (calculated) |
Opticalprop: | Uniaxial (+) |
Wakefieldite-(La) is the lanthanum endpoint of Wakefieldite with the ideal formula . As a vanadate in the tetragonal crystal system, the rare-earth mineral is a member of the xenotime group.
Wakefieldite-(La) was first described in 2008 for an occurrence in the Glücksstern mine, Gottlob Hill, Friedrichroda, Thuringia, Germany.[2] Similar to other rare-earth minerals, the type material contained considerable parts of other rare earth elements, namely neodymium, praseodymium, samarium and yttrium.[3]