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Mineral Specimens with Goethite
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We had two of these amazing limonite specimens in auctions awhile back. We spent 4 months after that trying to track down the Chinese guy who had them, and by the time the Tucson Show rolled around, we had found him and arranged to meet him in Tucson. There, he had about 65 specimens - the great majority of which were ugly, but some of which had the amazing iridescence you see here. We had to buy the entire lot of 65 to get the good ones - which was hard to bite off, but we did it. This is one of the largest of all of them, granted with more contacted stalactitic "knobs" than some of the other pieces (remember that limonite is iron oxide; all of these specimens have spots of "rust" showing, but some have more contacts than others; the knobs basically look like rust inside, which is essentially what they are - iron oxide). It DOES, however, have the amazing play of colors that makes these so notable - particularly greens and reds (these colors do not show up well in the pics - the luster you can see, but not the colors). Note that we did not see ANY MORE of this material at the show, with anybody! 17.3 x 12.7 x 9.1cm
We had two of these amazing limonite specimens in auctions awhile back. We spent 4 months after that trying to track down the Chinese guy who had them, and by the time the Tucson Show rolled around, we had found him and arranged to meet him in Tucson. There, he had about 65 specimens - the great majority of which were ugly, but some of which had the amazing iridescence you see here. We had to buy the entire lot of 65 to get the good ones - which was hard to bite off, but we did it. This is a mini, with perhaps a little more of the rusty parts showing than some other pieces (remember that limonite is iron oxide; all of these specimens have spots of "rust" showing but they blend in with the colors as you can see). It DOES have the amazing play of colors that makes these so notable. Note that we did not see ANY MORE of this material at the show, with anybody! 5.2 x 4.2 x 2.6cm
We had two of these amazing limonite specimens in auctions awhile back. We spent 4 months after that trying to track down the Chinese guy who had them, and by the time the Tucson Show rolled around, we had found him and arranged to meet him in Tucson. There, he had about 65 specimens - the great majority of which were ugly, but some of which had amazing iridescence. We had to buy the entire lot of 65 to get the good ones - which was hard to bite off, but we did it. This one does not have as bright a play of colors as some of them, it is a more subtle red shimmer, but it is notable for being a sizeable STALACTITE, which few of them are (most are plates). Note that we did not see ANY MORE of this material at the show, with anybody! 13.3 x 2.9 x 2.8 cm
Look at the gorgeous play of colors in this Georgia classic! The goethite is beautifully cradled in hematite around the base. An unusually aesthetic mini for a Georgia goethite. 3.1 x 2.8 x 2.5 cm
We had two of these amazing limonite specimens in auctions awhile back that were fiercely bid on. But that was all we had. We spent 4 months after that trying to track down the Chinese guy who had them, and by the time the Tucson Show rolled around, we had found him and arranged to meet him in Tucson. There, he had about 65 specimens - the great majority of which were ugly, but a small portion of which had the amazing irridescence you see here. We had to buy the entire lot of 65 to get the 6 or 7 good ones - which was hard to bite off, but we did it. Since then, we have found two or three more specimens with other dealers and bought them as well. They probably came from the same Chinese guy, before we bought the lot. You just do not see them around. At any rate, they just have the most amazing neon luster, nothing quite like it elsewhere in the mineral kingdom that we''ve ever seen. This one is mostly red with a hint of golden-green. 10.5 x 9.8 x 5.5 cm
For my particular taste, this is one of the nicest pieces out of Peter Bancroft collection from sheer interest value, price and history aside. In an ancient basalt flow there were gas vesicles that filled with quartz and other species; in this case, goethite. Once the basaltic rind eroded, this geode remained. A druse of colorless quartz is the host for several diverging and radiating, lustrous, black, metallic clusters of goethite, to 2.0 cm in length. The goethite, thankfully, is not contacted against the upper wall of the geode and the crystal sprays are freestanding! . As I said before, this is super! And it can be shipped, which is not the usual case. The tunnel full of geothite sprays goes all the way back in, and its much better in person, as you can guess! 10 x 7.2 x 7.2 cm
The luster and play of colors is truly amazing! 10.8 x 2.0 x 1.8 cm
A very elegant example of an old Colorado classic: two gemmy, slender quartz crystals rising from two intergrown rhombs of hematite pseudomorphed by goethite. These are prized by Colorado collectors, but they are very rarely as aesthetic as this, so this is quite uncommon and desirable specimen! 5.8 x 4.4 x 3.3 cm
BRILLIANT golden blades of rutile radiating from hematite and partially coated by goethite from the classic locality of Novo Horizonte, Brazil. This piece is from a respected West Coast private collection. 6.0 x 5.8 x 4.0 cm
A big, very thick and rich specimen of PENNSYLVANIA goethite, with an intense, glass-like luster. This layer is an inch thick! Old specimen, you don''t see these around anymore! 13.7 x 10.3 x 4.2 cm
A CLASSIC, OLD-TIME and excellent specimen of sparkly, teal-colored scorodite crystals richly lining a T-shaped vug in quartz matrix with a couple sprays of goethite blades. This fine old piece hails from the well-known and abandoned Hemerdon Bal open-cast mine of Devon, England and is the source of probably Europe"s finest scorodite in modern times. 4.4 x 4.1 x 3.3 cm
Look at the beautiful patterns of snowflake-like platnerite against a backdrop of deep green aurichalcite on this limonite matrix! A rich and pretty old Mapimi combo specimen! 7.9 x 7.9 x 4.9 cm
BETTER IN PERSON! We had two of these amazing limonite specimens in auctions awhile back. We put two really nice ones in the auctions awhile back, they were fiercely bid on. But that was all we had. We spent 4 months after that trying to track down the Chinese guy who had them, and by the time the Tucson Show rolled around, we had found him and arranged to meet him in Tucson. There, he had about 65 specimens - the great majority of which were ugly, but some of which had the amazing irridescence you see here. We had to buy the entire lot of 65 to get the good ones - which was hard to bite off, but we did it. So here you have it, with an amazing iridescence that does NOT come out in the pics (you can see the luster, but not the color, which in color is an unreal-looking metallic red and green). Note that we did not see ANY MORE of this material at the show, with anybody! 9.7 x 8.1 x 4.0 cm
A truly unique and gorgeous old Santa Eulalia specimen. Rather than just having grown conventionally on a plate of limonite, these elongated, super-lustrous crystals grew in a fan-like spray around the periphery of this limonite knob, creating a super-aesthetic specimen. Wow! 5.5 x 5.5 x 2.3 cm
Weird, bio-morphic looking, botryoidal, gray goethite on lustrous, jet-black goethite on massive hematite from Bulgaria. Ex Bulgaria Museum Collection. 6.7 x 5.3 x 4.5 cm
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Rob Lavinsky, rob@irocks.com
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