(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
HAMPEL, W., WAGNER, M. & SCHMIDT-THOME, M. (2005): Evaluation Report on Mineral Deposits in southern North Korea. – for BGR, 37 pp, 22 fig., 14 annexes.