“…http://www.minsocam.org/ citrine), lapis-lazuli (lazurite), danburite, scheelite, titanite, topaz, tourmaline (rubellite, elbaite, schorl), hackmanite etc., as well as some rare sorts like painite, poudretteite, periclase, johachidolite, sodalite, taaffeite, ekanite, axinite, chondrodite, sinhalite, jeremejevite, kornerupine, etc. (e.g., Themelies 2008 and references therein; Harlow and Bender 2013;Guo et al 2016;Wu et al 2019). Gem mining in the MMB is thought to have started around 1044 AD (Themelies 2008).…”