This mineral was originally found by cand. min. O. A. Corneliussen in 1877. He was aware of being confronted with something exceptional, but eventually he arrived at the conclusion that it was an epidote with an unusual habit, and labelled it "Epidote?".- While working on the Kongsberg-minerals, I found it in the collections of the university and made it subject to a more thorough examination. It is known only in a single specimen found in the Armen Mine at Kongsberg, and after that mine I have named it armenite. Armenite is colourless or green and translucent to dull. The crystals are pseudohexagonal, with long prismatic habit and poorly developed terminal faces. They may attain a size of 1½ x ½ cm.
Armenite, a water-bearing barium-calcium-alumosilicate