Obviously. This is a wrong description. The image does not show any Mn oxides nor oxyhydroxides. The dark green species may be: (1) pseudomalachite (most likely), (2) cornwallite (less likely), (3) philipsburgite (much less likely), growing on chrysocolla.
Hi, Please do not accept any pictures of Mr. J. Kornaga. His photos are out of focus and badly signed. I think, that our website should show good quality photos. There are many bad quality photos. Łukasz am I right? Regards Elek