Anadalusite in Sericite Shist
Cargo Muchacho Mountains, Imperial County
5.7 x 3.9 x 3.1 CM (cabinet)
Late Summer 2018
Something a bit unusual, the main Andalusite crystal is well-formed and over 3.5 CM across. Nice overall composition, the biggest Andalusite is quite well exposed from the Schist. Ex S. Alverson collection, this was collected in 1980, but not at any of the noted mines, just a small prospect. Microscopic exam finds many Hematite crystals and one Kyanite in the matrix as well. A fine, less common California specimen and a nice prismatic crystal of Andalusite.
A sizable Chiastolite crystal with a distinct Fairy cross from an uncommon locale, Rwanda. One face has been ground to show the structure with the back and sides left fully natural. This is the only example I have ever seen from there, this is from a 1970s vintage collection.
A classic Tyrolian Andalusite, several sharp crystals are well-exposed from enclosing Quartz. These old Austrian specimens are some of the best examples of this specie, which is usually not very impressive. This is in fine condition and has strong esthetics. With several old labels, this is a about as sharp and perfect as these crystals get.