Geology and genesis of the Debao Cu polymetallic skarn deposit, southwestern China

• DOI: 10.1016/j.oregeorev.2021.104046
• Publication Date: 2021-02-10T08:50:06Z
• Authors: Jiahao Chen; Qingfei Wang; Qihai Shu; Weijun Weng; Xiaojie Xu; Tingyi Wang; Qizuan Zhang
• Keywords: Pyroxene; Ore genesis

Abstract The Debao deposit, with stratiform orebodies in Middle-Upper Cambrian carbonate rocks, is a rare Early Paleozoic skarn copper deposit in the South China Block. Garnet U-Pb dating yielded a lower intercept 206Pb/238U date of 438.8 ± 7.3 Ma, which is coeval with the related granite (439 ~ 441 Ma). Skarns contain garnets with andraditic compositions (Ad53~93Gr4~46Py1~8) and clinopyroxene (Hd5~11Di89~94Jo0~1 and Hd52~85Di13~46Jo1~4) with low Mn/Fe ratios (