Prehnite on Quartz
Goboboseb Mts., Brandberg area,
9.7 x 7.7 x 4.3 CM (cabinet)
Pre Holiday 2017
Balls of crystallized Prehnite (up to 2.5 CM) in perfect condition are set on a matrix of Quartz crystals. A few Quartz crystals have breaks but most are undamaged. From the Goboboseb mountains better known for their great Amethysts, this is a bright, colorful and lustrous piece in person.
Cerussite on Barite
Mibladen Mine, Upper Moulouya lead district, Midelt, Khenifra Province
4.9 x 3.4 x 2.4 CM (miniature)
Pre Holiday 2017
One of the best values in todays mineral market are the Cerussites on orange Barite from Mibladen. This is a especially fine example with no damage, transparent and complete Cerussite crystals and a nice composition. Compared with a similar Cerussite from any other locale, these are super inexpensive and a good value. This specimen is quite above average with no issues or detractions.
Otavi-Bergland district, Oshikoto,
2.1 x 1.3 x .8CM (thumbnail)
Pre Holiday 2017
A transparent Tsumeb Anglesite crystal with the look of a Moroccan specimen. Smokey cognac color and zoning a well as unknown inclusions add a nice look to this crystal. On close inspection the association of Chalcocite and Posnakite micros and the unusual face coatings confirm that this is from Tsumeb. Glassy and sharp, there is some light edge bruising but the crystal is complete and terminated. A less common form and habit this is an early vintage piece much better in person.
Colorful and choice, this is a striking specimen. Velvety Rosasite on a gossan matrix is decorated with bladed Calcite crystals some of which form Rose like structures. The Calcite range from glass clear when small to milky whitein the larger blades. Several are twinned and the whole composition is very fine. The condition is excellent for such a delicate piece, there is a single cleave and very minor chips to be found on a careful exam but in a normal display nothing is noticeable. This is the best example of this find and habit I have seen, from 2013. The Calcites are mostly thin flattened rhombs or flattened hexagons with sharp, transparent or translucent edges. Far better in person.
A fine small cabinet matrix hosting several perfect gem clear Sphalerites on needle Quartz with minor Galena, Pyrite etc. The largest cluster is 1.6 CM and all are glassy yellow green color that is classic for this material. From finds in 2014. The name Cleiophane is not an approved specie of course but it is perhaps the most desirable variety of Sphalerite.
A delicate specimen in excellent condition with very pale pink (mangano) Calcites on a matrix of needle Quartz, lustrous Sphalerites and Pyrite. An attractive and nicely composed specimen from the great Madan deposits of Bulgaria. To my taste the Sulfide deposits of this region have produced the most esthetic examples of many species. This is a small but striking piece with quite remarkable slender Quartz that are decorated with tiny crystals of Sphalerite as well.
Amazing form! The Galenas here show many unusual habits, the epitaxial chains are most eyecatching but the hoppered and skeletal crystals are also very fine. Remarkable too is the lack of any visible damage. We have handled a lot of fine Bulgarian specimens but this one stands out as a very choice piece for esthetics and combinations of well crystallized but bizzare forms. From finds in 2014 I have not seen any newer material quite like this.
A fine and esthetic cluster of zoned Fluorite cubes in a delicate array. Minimal matrix, the cubes are very well separated and freely formed. Some faces show a light frosting others are more transparent and inside the cubes are swirls of deep purple with many inclusions of micro quartz prisms. With good magnification small movable bubbles are noted and the interior landscape is impressive too. Overall in outstanding condition damage wise, the corners and edges show some stepped growth but no damage. Several angles for display work well and have a quite treelike form. From mining in 2006 this style of specimen is no longer produced.