A choice, very well crystallized plate of green Ludlamite crystals from the classic Blackbird mine. Several old labels (included) date this back to 1960, which was the period when the best Ludlamites in the US were found. The Ludlamites are deep green, sharp, translucent and in clusters, balls and rosettes. A choice US classic of the quality that is almost never seen on the market today. No damage and the matrix has been stabilized to prevent crumbling of the soft Sulfide base.
Outstanding example of the specie from the old classic Idaho locale of Blackbird mine. These are considered to be the best specimens for the mineral and this one is especially choice. Sharp and gemmy crystals are well exposed and nicely perched on the contrasting matrix. No damage seen even under 20X magnification, the crystals reach up to 1.7 CM, and have fine luster. Micros of Siderite and another mineral are noted on a reddish druzy quartz matrix that sets off the green Ludlamites well.