Peisleyite, pronounced peez'-lee-ite, is a one-locality mineral found only at Tom's quarry since 1982. It is a dull, white, chalky massive piece. It has yet to be found in distinct crystals. Please see the prov. tab for a scan of the signed label.
From Mindat: "Peisleyite was named in 1982 in honor of Vincent Peisley (b. 1941, died 6 May 2021), mineral collector from Brahma Lodge, Australia who collected the first specimens.