Aurichalcite in Calcite
Mina Ojuela, Mapimi
5.3 x 4.1 x 3.4 CM (small cabinet/large miniature)
A very colorful Aurichalcite specimen that was in the collection of Warren Johannson. The Aurichalcite is seen through a lustrous clear layer of Calcite that has crystallized on top. The Aurichalcite is clearly seen through the Calcite and the whole is vividly colored. An older Ojuela specimen from the late 1960 era.
A pair of Elbaite specimens from the now famed Newry Mine of Maine. One is a small thumbnail the other a miniature. These come from the collection of John Marshall, who was one of the investors in what later became one of the greatest mineral finds of all time. These two pieces date to before that big strike. The set includes a matrix specimen with a gemmy Elbaite and crystals of Lepidolite on a blocky Albite crystal. The second specimen is a gemmy bi-colored Elbaite that is very clear and lustrous. The single crystal is not terminated but shows on one end a "nodule" or ball like mass which were noted at this locale as the most desirable gem grade. The matrix specimen has John's hand-printed collection number on one side. This material is quite unlike the later finds but which was an encouraging sign of the potential in the quarry at that time.
A cluster of three main Barite crystals that are translucent, phantomed and have areas of gemmy over-growths. Somewhat crude but complete and recrystallized on many faces. The blocky terminations have several faces that are zoned, with inclusions of white and pale yellow that is likely all Barite as well. In excellent condition, near the base is a small chip and the bottom was the point of attachment. Older specimen vintage 2004 from Jinkouhe in the Ebian area, Sichuan, China. An architectural habit with the crystals in a parallel growth that has the look of a skyscraper.
Fine thumbnail of Brazilian Chrysoberyl. A crystal cluster vintage 1948 with a dated but badly tattered Shortmann's Minerals label included that puts this piece at the very beginning of Brazilian specimens being exported. Good glassy luster, translucent to gemmy transparent areas and nice green-yellow color with classic twinned forms. Some reddish inclusions are seen that add a little contrast but no matrix, a floater this is complete all around. The original label is spelled Collentina which is not correct but this misspelling was used by both Arthur Montgomery and Alan Kaplan at that time. Either person could have been the source of this piece.
Tennantite and Siderite - classic European
Barbora Adit, Knottei area, Krupka, Krusne Hory Mts
Usti nad Labem Region (Bohemia),
5.4 x 3.3 x 2.2 CM (small cabinet/ large miniature)
A very old and very rich Czech Tennantite from this historic mining region. The matrix is a sparkling Quartz with several large (for the locality) Siderite rhombs up to 2.5 CM. The Tennantites are in clusters of many small, distinctive crystals, up to 4mm - though most are smaller. The Tennantite masses are relatively bright, lustrous and includes many twins. A small amount of Chalcopyrite is seen with magnification. This can be displayed from several angles that show more Dolomite or more Tennantite depending on preference.
Wulfenite with Mimetite
Rowley Mine, (Reliance Mine), Theba, Painted Rock District
2.1 x 1.6 x 1.4 CM (thumbnail)
A superb and perfect thumbnail of bright orange windowpane Wulfenites with a scattering of red Mimetite. The Wulfenites are perched like wings on a small mound of solid matrix so this looks like a butterfly from some angles. Even under strong magnification this is flawless, undamaged and looks fine from any angle. The Rowley Mine is one of the great USA localities for Wulfenites, the crystals tend to be small, thin and brilliant. The mine, before it closed in recent years, was an excellent source of specimens but fully perfect competition quality was very rare. We have handled many good pieces and are currently offering some others on line, but this is simply not a typical level piece. Far better in person and an outstanding colorful, delicate Wulfenite that is a choice example of this iconic locality.
A choice old Yaogangxian specimen with fantastic contrast. Purple phantom Fluorites in a cluster set like jewels on matrix, the largest crystal about 2.5 CM diameter. Transparent to translucent Fluorites with a glassy to waxy luster, these look fine from just about any angle. In fine condition overall, by naked eye there is no visible damage, just some minor rough spots. With a good loupe some small bruises are seen, this is not distracting and is lost in the bigger context. The color ranges from the "grape purple" phantoms to a lighter violet-blue in the crystal bodies, glows great if backlit. This is 2006 vintage, from the "golden years" for Fluorites at Yaogangxian.
Dolomite - iridescent
3 x 2.4 x 2.3 CM (small miniature/ large thumbnail (toenail))
An unusual and attractive thumbnail of Dolomite crystals from Tsumeb with iridescent sheen. An older piece originally labelled "Cobaltoan Dolomite, Tsumeb SWA", however, this does not look at all like the usual Cobalt coloring and doubt the accuracy of that. This is however unusual looking for Tsumeb the crystals are sharp, slightly curved and have reddish-purple highlights.