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Mineral Specimens with rutile
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ex. Charlie Key
A sharp penetration-twinned rutile crystal that dominates a natural pedestal of matrix (limonite). This is lustrous as could be, metallic in not just lustre but somehow in its overall form as well. It is complete all around save for one contact on the back or a left side depending on how you display it.The piece has a slight red sheen to it, that when strongly lit is obviously more apparent (rightmost photo) although not how it looks in a normal case with normal lighting (leftmost photo).For the size and price range in particular, this is a superior specimen quality!
ex. Martin Lewadny
An absolutely exquisite floater cluster of gemmy, reddish Rutiles, with superb luster and beautiful striated crystals! It is sharply twinned and reticulated and looks like a red cerussite. The largest crystals range up to about 6-7 mm, and the overall effect of the interlockin gmesh is mesmerizing. Delicate and desirable, I have not seen an aesthetic cluster quite like this, amidst hundreds of more fragile, slender, brittle rutiles from the same locale. This one is more robust and brilliant, and to me stands out. When backlit, it glows a deep red.
9.7 x 6.1 x 4.6 cm. The specimens you have seen from this find generally have a small hematite plate with acicular crystals of rutile extending out from it. This is a HUGE specimen for this Brazilian association of platy hematite and rutile, with really BIG hematite crystals being the star rather than the rutile. One of these tabular hematites is 5.5 cm across! To me, the traditional combos are pretty and fine to look at, but pieces like this have more real significance as specimens for the important mineral here. Note that the piece has been gently stabilized with glue, as the large and heavy hematites are held together by the rutile a little gently at the top.
5.9 x 4.1 x 1.3 cm. From the recent finds, with golden acicular crystals of rutile radiating from a center of platy, lustrous hematite. This unusual one is multi-layered, so it has a 3-dimensionality that is uncommon for these.
This is a killer miniature rutile ! FEW are found so sharply twinned, and this is as sharp and as lustrous as you can get. The faces are so reflective you could shave in them. The bevelled edges, also. The piece has a slight red sheen to it, that when strongly lit is obviously more apparent although not how it looks in a normal case with normal llighting 4.6 x 4.6 x 2.7 cm
A sharp penetration-twinned rutile crystal that dominates a natural pedestal of matrix (limonite). This is lustrous as could be, metallic in not just lustre but somehow in its overall form as well. It is complete all around save for one contact on the back or a left side depending on how you display it. 5.8 x 4.9 x 4.4 cm
7.4 x 5.1 x 3.4 cm. A gemmy quartz crystal, shot through with needles of acicular rutile - much as you would see in Brazilian ones, but these crystals are a very dark gemmy smoky color, rather than the golden color of the Brazilian ones.
4.8 x 2.6 x 1.9 cm. Choice combination piece containing superb crystals of Biotite, Rutile, and Siderite. The Biotite, up to 1.5 cm across, has superb luster and excellent well-defined hexagonal habit. The Rutile is in classic lustrous striated blades up to .5 cm, and the Siderites are in small but sharp off-white rhombs.
10.2 x 7.5 x 5.7 cm. A sharp, triangular-shaped 2.5 cm rutile with incredible lustre highlights this specimen. The crystal sits with a few other small rutiles on iridescent limonite matrix that has whirly patterns of limonite contrasting to the sharp rutile.
1.7 x 1.6 x 0.4 cm. A cutie thumber of this now classic combination of bright, golden rutile crystals shooting off of a base of platy, metallic hematite.
5.0 x 3.5 x 2.0 cm. A highly lustrous, 2.2 cm, deep wine-red, twinned rutile crystal with gemmy highlights pleasingly set atop pyrophyllite matrix from the famous Champion Mine of Mono County, California! Very nearly pristine, with only trivial edge wear. Ex. George Elling Collection. Old material, MUCH more rare than rutile from Georgia, in the US.
7.8 x 5.2 x 5.0 cm. You have seen mostly small specimens of this combination from Brazil, with perhaps a small platy crystal of hematite with needles of rutile shooting from it. This one is a completely different style, a series of LARGE platy hematite crystals, with the rutile embedded in their jagged peripheries. They are stacked in a really attractive design, staggered back 3-dimensionally. This is a wonderful small cab of this combo and a great example of Brazilian hematite of this style, which you just do not see out there in this size and richness.
3.1 x 3.1 x 1.8 cm. This rare earth oxide appears not to be a valid species anymore, but rather a variety of Rutile. It is closely related to Ilmenorutile, however the presence of Tantalum makes for a very unique chemistry. This piece features a very sharp, well formed, dark brownish-black crystal of "Struverite" measuring 1.0 cm on massive translucent Quartz matrix. These specimens are no longer being found.
6.8 x 4.6 x 3.1 cm. A REMARKABLY fine, large and aesthetic specimen from this now well-known find! What makes this piece so special is its uncommon 3-dimensionality, with one platy hematite superimposed in front of another. The specimen has an almost perfect balance of shimmering, golden rutile crystals and metallic-looking tabular hematite.
4.0 x 3.2 x 1.2 cm. A striking specimen of this now well-known combo from Brazil, combining shimmering, bright golden acicular rutile crystals with shiny-metallic, platy crystals of hematite. This specimen has two stacked crystals side by side, and is beautiful on both sides - complete all around, with the contact on the bottom. The hematite really gleams, like a polished metal machine part!
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Rob Lavinsky, rob@irocks.com
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share specimen![Rutile (twinned) from Graves Mountain, Lincoln County, Georgia, USA [db_pics/pics/k338a.jpg]](db_pics/pics/k338a.jpg)
![Rutile (twinned) from Graves Mountain, Lincoln County, Georgia, USA [db_pics/pics/k338b.jpg]](db_pics/pics/k338b.jpg)
![Rutile (twinned) from Graves Mountain, Lincoln County, Georgia, USA [db_pics/pics/k338c.jpg]](db_pics/pics/k338c.jpg)
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