Mineralpedia Details for Bixbyite
Named after Maynard Bixby, the mineral dealer from Utah, USA who provided the first specimens. Bixbyite can be found in lithiophysal, caused by expanding gasses, cavities in rhyolite, and in metamorphosed manganese ore. Bixbyite is an uncommon mineral that can be found in localities in the United States, Mexico, Spain, Germany, Sweden, India, South Africa, Zimbabwe, Namibia, and a few additional localities. Associated minerals include topaz, spessartine, beryl, quartz, Sanidine, pseudobrookite, hematite, and beraunite.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/bixbyite.pdf
Bixbyite from Thomas Range, Juab Co., Utah, United States
Perfect lusterous black, cubic crystal to 5mm perched nicely atop quartz rhyolite matrix.
Bixbyite from Wessels mine, Hotazel, Kalahari Mn fields, Northern Cape Province, South Africa
Solid silvery mass of all Bixbyite with 5-6mm cubic crystals. Bixbyite is an ore of manganese.