UT Permanent Collection - murphotos

Fergusonite (green), a Yttrium Niobium Rare Earth, Llano County, Texas

Locality: from the Baringer Hill Pegmatite, Llano County, Texas
Fergusonite is a complex oxide of various rare earth elements
Chemical Formula: (Y,RE)NbO4, where RE = rare earth
Crystal System: Tetragonal - Dipyramidal
Specimen Size: 3 in x 3.5 in x 2.75 in
Specimen Weight: 918 grams
Specimen Identification: TMM-2290
In the Permanent Collection of the Jackson School of Geosciences, the University of Texas at Austin.
The pegmatite was discovered in 1887, but buried under Lake Buchanon in 1937.

Fergusonite201509303 inches x 3.5 inches x 2.75 inches918 gramsBaringer Hill PegmatiteJackson School CollectionLlano CountyRode Ranch PegmatiteUniversity of Texas at Austincollection reference TMM 2290rare earthYNbO4