Kolwezite Anxiety

摘要

In the September 2021 issue of Mineral News, Herwig Pelckmans wrote an informative article about a recent analysis of the interesting copper and cobalt mineral, kolwezite. Herwig's article prompted me to take another look at my own specimen of kolwezite. I bought my specimen decades ago from the famous Congo mining engineer and mineral dealer Gilbert Gauthier. Of course, his label pre-dated the recent analysis described in Herwig's article. My specimen is shown in Figure 1, with a close up in Figure 2.