Kinoite, Ca2Cu2Si3O8(OH) 4, is a very rare silicate best known to collectors in these specimens which were found at the Christmas Mine back in the 1960s. Kinoite forms microcrystals of an intense deep blue color associated with clear microcrystals of apophyllite (this association is typical for the Christmas Mine find). A very large and rich example of a mineral you just do not see around often at all. Ex. Mullane Collection.