Government of Alberta

This kimberlite xenocryst dataset includes the electronic microprobe data from silicate and oxide xenocryst minerals from various ultrabasic to kimberlite rock occurrences in the northern Alberta kimberlite province. These data, which total 4,285 analyses, include 897 garnet 533 clinopyroxene 791...

The first clue to the presence of possible diamond-bearing source rocks in northern Alberta was the discovery of a perfect octahedral diamond, estimated at about 0.83 carats in weight, by farm worker Einar Opdahl during 1958 in the Evansburg area of west-central Alberta. Since the Opdahl diamond,...