SOLD Milarite, Quartz and Valencianite
stock #SOLD A7-382-(463)
Valenciana Mine (Mina La Valenciana), Municipio de Guanajuato
8.2 x 6 x 2 CM (cabinet)
Late Summer 2021
Several bright yellow Milarite crystals are scattered on a well-crystalized matrix of milky Quartz and sharp Valencianite crystals. This is from the find made decades ago at the Valenciana Mine and this specimen is quite rich, this specimen has more than a dozen crystals reaching up to 5 mm. The Valencianite (a type of Adularia as this is an Orthoclase) is especially sharp and partly transparent. This is complemented with the Quartz crystals which are mixed in and give a nice extra bit of luster.
One of the more uncommon Beryllium Silicate species, Milarite is a real "mineral collectors" specie. This piece is from the find some decades ago in Guanajuato, Mexico. The Matrix is a mix of Quartz and Valencianite (variety of Adularia). The Valencia Mine is the type locality for the Feldspar and was the source of these small bright yellow Milarites which were big news in the mineral world. This piece has several very small crystal and one a bit larger (about 8mm). These are flat habit and the structure is not as evident without good magnification. A fair example of the find that is not crazy expensive.