Brilliantly shimmering, lustrous, large balls of tobermorite crystals, forming a translucent "blob" over matrix of pyrite, make this the most visibly appealing example of the species I have seen myself. Its a display-quality miniature, from old Mexican finds (I am told 1960s). This was in the Marty Zinn collection for a long time (#1492). Apparently the small acicular tufts are also tobermorite.