Mineralpedia Details for Tengerite-(Y)
Named for C. Tenger, the chemist from Sweden who first studied the mineral. It can be found in only a few localities including Sweden, Norway, Japan, Canada, and the USA. It occurs as “an alteration coating on yttrium-bearing minerals.”
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/tengerite-(Y).pdf
Tengerite-(Y) from Paratoo Cu mine, Mt Lofty Ranges, South Australia, Australia
Pearly white, thin platy crystals in radial aggregates to 2-3mm.