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Mineral Specimens with Galena
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This specimen is mesmerizing! It is a floater composed of intergrown, gemmy, fluorite crystals that have developed extreme stepped growth. The upper portions of the fluorite are a light pastel purple to colorless. This grades into a pastel green color. Just for an additional color contrast there is a 1.5 cm across, splendent, dark gray, galena crystal perched on the side or botto mdepending how you orient it.
A cluster of gemmy, pastel green crystals of fluorite to 2.5 cm across, is perched on splendent crystals of black sphalerite, to 1.0 cm across and bright crystals of galena, to 1.0 cm across. The fluorite crystals are cubes modified by octahedral faces with the cubic faces being gemmier, allowing us a window into the deepest recesses of the crystals. The piece displays well this side up or upside down to what is shown, either way very nicely. Only very minor peripheral damage in the form of a few contacts and one small ding keeps this specimen from being pristine and worth double to my mind, making it a relative bargain for the quality overall.
Splendent crystals of galena, to 2.0 cm across, form the matrix for a cluster of gemmy, pastel green fluorite crystals, to 3.75 cm across. The fluorite cubes modified by octahedral faces exhibit the stepped growth for which Naica is famous. Only the slightest peripheral contact has been noted. This is a very nice example of what Naica can produce, and the spread-out physical arrangement makes it a lot of "bang for the buck" in terms of visual appeal. MORE colorful, MORE gemmy, in person. This piece actually has a pleasing green color that is better tha most here, fairly intense for Naica, that is dimmed in the photos because of the transparency of the large fat crystals.
This one looks like some sea monster climbing up! It is just bizarre, having the isolated stacked chain of sucecssively larger crystals perched upon matrix which seems apart. Massive, mirror bright, gray galena is the matrix for the two generations of fluorite. The first generation is gemmy, pastel green that is supplanted by gemmy, nearly colorless, stepped growth of cubes modified by octahedral faces. The largest of the latter generation measures 2.3 cm across. REALLY neat specimen, quite different from the crowd...
Gemmy, bi-colored, fluorite crystals, to 3.0 cm across, are perched on a matrix of splendent galena crystals to 2.0 cm in length. The core of the fluorite crystals is pastel green and the terminal faces are pastel lavender. There is also evidence of the stepped growth, for which Naica is famous. A dramatic piece with 3-dimensional presentation on its perch!
This matrix specimen has fine aesthetics thanks to well formed lustrous galena crystals, to 2.5 cm in length, upon which are emplaced gemmy, pastel green fluorite crystals, to 3.0 cm across. The contrast of form and color with the galena MAKES the specimen. It is one of few with so dramatic a contrast. The fluorite crystals are cubes with modifying octahedral faces. In addition, there is a drusy crust of white quartz partially covering the lower boundary with the galena crystals for accent. Very nice combo!
Of all the fluorite specimens with galena in this update this is clearly the most dramatic. It is a VERY heavy, 3-dimensional specimen with a herd of gem fluorites stampeding off the top at you as the viewer, really 3-dimensionally coming off the galena. The lustrous galena crystals to 1.7 cm across are surmounted by gemmy, pastel green and lavender, fluorite crystals to 3.5cm across. Fluorite cubes are modified by octahedral faces and there is also the presence of stepped growth. A superb combo specimen!
Dramatic upon a quartz matrix, these hollowed cubes of lustrous galena crystals, to 1.6 cm across, exhibit incredible etched, skeletal growth, where only the crystal edges remain. There is one crystal on the lower left edge that had its etching interrupted, because most of the crystal is still intact. Although etching can and does appear in many mineral species, this occurrence in a primary lead mineral is just flat-out amazing.
One superb crystal of skeletal, battleship gray, galena, measuring 1.3 cm in length, is aesthetically perched on other galena crystals exhibiting various stages of etching. For added effect, scattered on the galena are several crystals of resinous, translucent yellow crystals of sphalerite to .6 cm across. The etching, and color contrast is super!
A massive chalcopyrite matrix sporting brassy yellow crystals to 1.5 cm in length is the host for a small cluster of etched, skeletal, battleship-gray, crystals of galena. The rear-right side of the matrix was sawed to remove it fro mthe pocket, though this faces the back. These crystals, which reach 1.5 cm in length, are so eaten away, that only the crystal edges remain and are slightly twisted as if caught in a storm. Superb example of this rare habit!
This well-balanced matrix galena specimen is covered by a bed of green, chloritic to colorless, gemmy, lustrous quartz crystals, to .75 cm across. Perched aesthetically on the quartz are three lustrous, skeletal, battleship-gray galena crystals, to 2.5 cm across. They are more elegant than boxy, if that makes sense to say, though they are technically boxwork in form. It appears that the largest crystal was octahedral in form rather than the more ubiquitous cubes. Truly dramatic and unusual! More 3-dimensional in person, too!
Almost a complete floater, this crazy-looking , surreal cluster of lustrous, skeletal, battleship-gray galena has crystals to 2.75 cm in length exhibiting several stages of etching. Perched aesthetically at the top is a superb and elongated hollow crystal, where only the crystal edges remain. It looks more like sculpture than crystal!
Massive galena with some associated quartz forms the matrix for skeletal, lustrous, battleship-gray, galena crystals to a whopping 2.5 cm in length. You can imagine how few of this size might survive?! This is more lustrous than others here, for some reason, and is MUCH ORE 3-dimensional in person. The crystals exhibit various stages of etching with the largest crystal displaying only crystal edges. Dramatic!
Gemmy quartz crystals, some doubly terminated and chloritic, are the matrix for skeletal, lustrous, battleship-gray galena crystals to 1.6 cm in length. A few, small brassy yellow, chalcopyrite crystals abut the galena crystals, on the back side of the specimen. I particularly like the way the galena crystals are perched high on the matrix, very dramatically.
Note this is one of the largest specimens recovered in good condition, with any aesthetics to it; and is also particularly balanced and well-trimmed. The etched, skeletal, battleship-gray galena crystals are beautifully perched on a matrix of colorless quartz, with nearly all of them exhibiting amazing etching to their hollow cores, where only the crystal edges remain. Magnificent and aesthetic for the rich contrast to quartz!
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Rob Lavinsky, rob@irocks.com
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share specimen![Fluorite and Galena from Naica, Chihuahua, Mexico [db_pics/pics/flu51a.jpg]](db_pics/pics/flu51a.jpg)
![Fluorite and Galena from Naica, Chihuahua, Mexico [db_pics/pics/flu51b.jpg]](db_pics/pics/flu51b.jpg)
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![Galena (skeletal) from 9th of September Mine, Madan, Rhodope Mtns., Bulgaria [db_pics/pics/gals-06b.jpg]](db_pics/pics/gals-06b.jpg)
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![Galena (skeletal) on Quartz from 9th of September Mine, Madan, Rhodope Mtns., Bulgaria [db_pics/pics/gals-08a.jpg]](db_pics/pics/gals-08a.jpg)
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