Agate Ps after Aragonite
stock #15.1-1058- (SM598)
Rancho Coyamito, Sierra del Gallego, Mun. de Ahumada
10.1 x 7.6 x 5 CM (cabinet)
A really fine Pseudomorph with a purplish Agate (chalcedony) that has completely replaced a cluster of Aragonite crystals. The hexagonal form of the Aragonite is perfectly preserved. Esthetic, in fine condition damagewise and a a small bonus this is also a natural rattle since a hollow crystal has some trapped material inside. Great form and nice color too.
An old Swiss classic Alpine specimen. Complexly structured matrix hosts several minerals in layers with gemmy green Titanites on the top. Beds of Bysollite needles have well crystallized Adularia protruding and micro sprays of Apatite throughout. This displays the complex nature of mineralization in Alpine clefts very well. The Titanites crystals are up to 1 CM though most are smaller. Ex Charles M. Noll and Jim Dufoe collections.
Wulfenite on Mimetite
Ahumada Mine, Los Lamentos
9.8 x 7 x 4 CM (cabinet)
A very fine, attractive Bipyrimidal Wulfenite from Los Lamentos. This famed mine is best known for the tabular habit Wulfenites, but rarely this pointed habit was found, often on a dark green druze of tiny Mimetite crystals. Similar but noticably different from bipyrimidal Wulfs from Mina Ojuella. This specimen is esthetic, large, very colorful and in fine condition. A choice older Mexican classic Wulfenite.
A rare example of a Yaoganxian Cassiterite that is well crystallized. One of the most prolific mineral mines on Earth, Yaoganxian has produced many fine specimens of many species, but almost no Cassiterite. This small specimen is the best example we have seen. There are a few small Arsenopyrite crystals as well and this has some well defined twins. Compared with the world class Cassiterites from the famed Pingwu and Ximeng mines this is a modest piece, but for a Yaoganxian suite this is a killer.