20080 Vrbaite, Avicennite, Parapierottite, Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA September 18, 2022 Steve North and Central Americas United States Utah Microcrystalline black vrbaite, brown avicennite and metallic grey parapierrotite coating chert matrix.
North and Central Americas United States Utah 2503 Parapierrotite, Vrbaite, Lookout Pass, Tooele Co, Utah, USA October 3, 2019
North and Central Americas United States Utah 2364 Avicennite, Pierrotite, Weissbergite, Thallium Prospect, Little Valley, Tooele Co, Utah, USA September 22, 2019