Weeksite, K2(UO2)2Si6O15•4(H2O), Topaz Mountain, Juab County, Utah, USA. Yellow spherical aggregates of weeksite on matrix
Dumortierite, Al6.5-7(BO3)(SiO4)3(O,OH)3, New York City, New York, USA. Dimensions: 48 x 36 x 20 mm. Sprays of blue-gray dumortierite crystals in quartz. A crumbling old label that came with this specimen says 135th Street & Mott Avenue, NYC. Uploaded by: Kelly Nash
Larsenite, PbZnSiO4, with epidote-Pb, Franklin, Sussex Co., New Jersey, USA. Colorless bladed crystals to 1mm. Rich specimen in "hancockite" - the lead Epidote
Cappelinite-(Y), Ba(Y,Ce)6Si3B6O24F 2, Mont Saint Hilaire, Québec, Canada. Brownish spray of acicular crystals
Vanadomalayaite, CaVOSiO4, Gambatesa Mine, Genova Province, Liguria, Italy. Three tiny dark brown crystals of the rare vanadomalayaite from the type and only locality
Jerrygibbsite, Mn2+9(SiO4)4(OH)2, Parker Shaft, Franklin Mine, Franklin, Franklin Mining District, Sussex County, New Jersey, USA. Pale pink interlocking anhedral grains associated with zincite, franklinite, and hodgkinsonite.