Emerald-bearing pegmatite veins, hosted in Cambrian metamorphic rocks at the eastern contact of the Yanshannian Laojunshan granite.
Ref.:
- Ottens, B. (2006): Smaragd aus Dayakou. Lapis 31(4), 13-20 (in German).
- Groat, L.A., Giuliani, G., Marshall, D.D., and Turner, D. (2008): Emerald deposits and occurrences: A review. Ore Geology Reviews 34, 87-112.
- http://www.shiyamc.com/en/News_show.asp?id=19