Portlandite from North America Plate
Canada | |
| Manor, M.J., Scoates, J.S., Nixon,G.T., and Ames, D.E. (2014): Platinum-group mineralogy of the Giant Mascot Ni-Cu-PGE |
| Daniel F. Rosa and Robert F. Martin (2010) A spurrite-, merwinite- and srebrodolskite-bearing skarn assemblage, West Clearwater Lake impact crater, northern Quebec. The Canadian Mineralogist (December 2010), 48(6):1519-1532 |
Mexico | |
| Ward's Natural Science Establishment specimen |
USA | |
| Roadcap, G. S., Kelly, W. R., & Bethke, C. M. (2005). Geochemistry of extremely alkaline (pH> 12) ground water in slag‐fill aquifers. Groundwater, 43(6), 806-816. |
Cerro de la Coronita, Cuernavaca, Morelos, Mexico