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102F - Dolomite and Pyrrhotite on Quartz - $ 750 Morro Velho Gold Mine, Nova Lima, Minas Gerais, Brazil small cabinet, 9.4 x 5.5 x 5.1 cm ex. Dr. Edward David
Dolomite crystals of this quality are rare from any location, and these translucent blades are heavily decorated by minute crystals of iridescent pyrrhotite (and some cubanite) to make them stand out. A very 3-dimensional specimen, overall! Bladed rosettes of lustrous, translucent dolomite to 4.5 cm across, are aesthetically emplaced on a colorless, gemmy, 7.0 cm across, quartz crystal. Usually one sees gemmy green siderite with minor dolomite but this is a superb PRIMARILY-dolomite specimen from one of the world’s deepest gold mines, and a fine source for good specimens as well (though miners bring them out at risk of losing their jobs!)
11edd90d - Epidote with Byssolite and Dolomite - $ 7000 SOLD Knappenwand, Pinzgau, Salzburg, Austria small cabinet, 9 x 6.5 x 5.9 cm ex. Dr. Edward David ex. Rolf Wein
This is a visually impressive epidote from the classic old locality, with unusually stoudt and thick crystals. They have lustre like glass! The terminations are remarkably 3-dimensional and stand out dramatically from the matrix which acts as a natural prop to the crystals for display purposes. You can see there is one hairline crack here, a repair. It it were not repaired, this would be a 25k piece for the size and beauty, and the rarity on matrix. So, while there is this problem, the price is definitely adjusted accordingly and you get a piece that LOOKS like it is far more valuable, and certainly has more visual impact period, than you could normally get in this price range.
14edd22ae - Azurite on Dolomite - SOLD Touissit Mine, Ouijda, Atlas Mountains, Morocco small cabinet, 7.4 x 6.3 x 5.3 cm ex. Dr. Edward David
I am told that this was one of the best pieces in the size range from the famous 1998 find here, which Horst Burkard brought out to Tucson of 1999. The crystals have superb lustre, oustanding form, and literally leap off the contrasting matrix at the viewer, for dramatic effect. The color contrast is what makes the piece in part, but also the 3-dimensionality of the crystals leaping out at you. They are complete around , with only a few trivial contacts on the sides and with all major crystals completely pristine. This is a showpiece, no doubt about it!
186D - Cinnabar on Dolomite - $ 3000 Wanshan Mine, Guizhou Province, China small cabinet, 6.1 x 3.9 x 2.0 cm ex. Dr. Edward David
Until the early 1980’s, fine twinned cinnabar specimens from China were all but unheard of. In the last few years fine, untwined cinnabar specimens have come available. This magnificent specimen features a cluster of pristine, frosted, very lustrous, translucent, cherry red cinnabar crystals, to 2.0 cm across, aesthetically perched on ivory colored dolomite. These large untwinned crystals are actually LESS common than the twins we all wanted when they first came out, and often overlooked. This one is world class in color, size and aesthetics!
4JB8-LC158 - Galena with Dolomite - $ 245 SOLD Sweetwater Mine, Ellington, Reynolds Co., Missouri, USA small cabinet, 5 x 4.7 x 6.2 cm
Outstanding Galena specimen from the St. Joseph Lead District, Vibernum Trend, Missouri. This modified 3.9 cm cube has excellent luster and form, and it sits on a matrix of Dolomite and Chalcopyrite. You could not design a specimen with better aesthetics - and it is BETTER IN PERSON!
4JD37 - Dolomite (twinned) on Quartz, Phengite - $ 95 SOLD Brumado, Bahia, Brazil miniature, 4.5 x 2.5 x 2.2 cm | |||||||||||||||||||||||||||||||||||||||||||||
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This is from a new pocket found at the end of 2008, and quietly trickled into Tucson in 2009. It is a select, cherrypicked piece featuring a zoned, multicolored 2.8-cm fluorite perched on beautiful, lustrous, dolomite crystals. The dolomites have a porcelain-like quality to them and the stark contrast in texture and geometry is appealing. The fluorite is pristine. The dolomite has one broken crystal in the front-middle-right side, which is trivial. The piece displays wonderfully but I must say has a sawed surface on the upper-right edge (which you do not see form the display face, anyhow). So, the piece is offered at a reduced price if i do not have to go and manually work down the sawed edge to hide the flat mark facing to the rear, ad would be moreexpensive otherwise. This may not bother some people, and if so you get a good deal for it. I know that quality specimens from this pocket were going for prices much higher than this, under the table and privately at Tucson. It will, in retrospect, turn out to be one of the more interesting fluorite combinations from China and is really a unique combination so far as I can see. NOTE: these exhibit the photographic property of metamerism. They change colors from halogen and professional bulbs (more blue) to indoor fluorescent lighting and even natural sunlight (more green). Examples from both are shown here. The change is startling if you do not expect it, and quite pronounced in the right lighting.
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