Ludlamite with Vivianite
Blackbird Mine, Lemhi County
6.3 x 4.3 x 1.7 CM (cabinet)
The Blackbird mine was a small Cobalt operation that in the 1950-1960s occasionally produced well crystallized Ludlamites. Sometimes with Vivianites, these were by far best of the specie found in the US, and some can be compared to good Bolivian material. This is a good small cabinet with both species in well developed crystals. Very hard to find anything larger than a thumbnail now, this is an early 1960 vintage piece ex Charles Noll collection.
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.