Prominent, large well defined Carlsbad twin Orthoclase is pseudomorphed to Topaz. The Topaz is well exposed from the matrix and is 5.8 CM across. The matrix also includes several small Cumberland habit Quartz crystals mostly on the backside of the piece. This is an old piece from a classic German locality, not often available on the mineral market. In fine condition.
Deep red small crystals of Proustite scattered on a complex mix of tiny yellowish Quartz crystals. A nice thumbnail of a "noble" Silver mineral that has several different habits showing. With magnification some broken areas are noted which is typical for most Proustites but all in all this is a cute and fairly rich specimen from a classic locale. Ex. Wm. Hladysz collection, he acquired this in 2003.
A choice old Harz Mountains pink Apophyllite ex Erastus Corning (1794-1872) and Cornell University collections. Corning specimens are quite rare in themselves, he was an important politician, industrialist and the city of Corning is named for him. His interests were broad and included a small but fine mineral collection. Likely a pre 1865 specimen, very glassy with fine color and in remarkably fine condition despite the age of this piece. Fine old pink Apophyllites from St. Andreasburg are one of the most desirable 19th Century classic from western Europe. Excellent value for the size quality and provenance
A superb, unusually well formed classic German specimen from the famed Schneeberg mines. The quality is top notch, see the outstanding recent Mineralogical record article on this locale. Sharp, well isolated individual crystals (reaching over 2 CM) contrast with small patches of Cumberland habit druzy Quartz and what seems to be Wendwilsonite. This is ex John Marshall collection piece acquired by him over 50 years ago. The crystal forms on this are well pronounced and show clearly the cubo-octahedral forms with curved faces. These are far more distinct and three dimensional than typical. The display face is in fine, undamaged condition, which is remarkable for this brittle mineral. The only damage to note is on part of the outer edge. Very rare to find any decent specimens available but this one is far beyond that, as fine as any major piece, yet not insanely expensive for a classic..
A small miniature / toenail sized cluster of classic Manganite crystals with no matrix in fine condition. Good Ilfeld Manganites have always been considered the best of the specie and are usually very expensive in larger sizes. This smaller piece is in undamaged condition and shows the crystal form that is so distinctive from this classic old Harz Mountains locality.
Malachite Ps after Azurite
Flubspatgrube, Lichtenberg, Bad Stben, Franconian Forest, Franconia
5.9 x 3.3 x 2.7 CM (small cabinet/ large miniature)
A fine old Pseudomorph with a very well formed main crystal 2.4 CM tall. From the collection of Thomas Fitzpatrick, this is in excellent condition. I have not seen any other of this quality, the separation and contrast with the matrix is superb. There are some smaller crystals on the matrix most with some damage or are fully broken but these are not very obvious. The matrix is largely a dark red to brown Gossan with a few small Goethite spheres. On the bottom of the matrix there seems to be a small zone of Pseudomalachite as well.
Proustite-classic ruby Silver
Shaft 207, Niederschelm, Schelma, Schlema-Hartenstein District, Erzgebir
1.6 x .7 x .6 CM (thumbnail)
Late Summer 2018
A complex single crystal of bright red Proustite and just a tiny speck of adhering matrix. Classic Ruby-Silver, from the German Erzgebirge, this has very good luster and the red color shows no sign of fading. Close exam with magnification finds some chipping but most of the crystal faces show good form with glassy striations. Much better in person, this is a choice thumbnail at a very reasonable cost for this highly desired Silver mineral.
Cerussite covered by Pyromorphite
Schapbach, Black Forest, (Wolftal)
7.2 x 5.9 x 3.2 CM (cabinet)
Late Summer 2018
Exceptional quality for this less well known locality. The matrix is almost all Cerussite in many crystal forms, with a small area of Galena nearly all covered with tiny Pyromorphite crystals. The matrix also has a dusting of very tiny clear Quartz in doubly terminated crystals that add a lot of sparkle. There are other Phosphate minerals on the specimen that are not identified. The Pyromorphite ranges from pale yellow to green hues and the whole is very colorful. The shapes of some Cerussite twins are well defined but brightly colored by the coating of pyromorphite. This all makes a very fine look under magnification. Ex John Marshall, Heinz Stempel