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Mineral Specimens with Andradite
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3.4 x 3.3 x 1.8 cm. The Val Malenco became famous amongst mineralogists and collectors for the finds of these very rare green demantoid garnets. Here are four crystals, to 0.5 cm, with sharp faces and fine luster and gemminess, embedded in matrix. Ex. Bill Larson Collection.
2.4 x 2.2 x 1.9 cm. A textbook crystal of Mexican andradite out of the Bill and Carol Smith collection, with superb luster and pretty stepping on the faces, along with some nice little sidecar crystals.
2.4 x 2.1 x 2.1 cm. A superb garnet crystal from recent finds in Mali. This crystal is a sharp yellow garnet of textbook form.
4.4 x 3.8 x 3.4 cm-2.3 x 2.1 x 1.9 cm. An entire collection of sharp, lustrous andradite garnets of textbook form from Mali.
4.9 x 4.8 x 4.8 cm. Out of the noted Arizona mineral collection of collector/dealer Evan Jones, a knob of lustrous andradite garnets, with the typical coffee color for this locality.
6.1 x 4.9 x 2.1 cm. Incredibly lustrous, sharp, coffee-colored andradite garnets from Pakistan. They are surrounded by a field of little green garnets that creates a beautiful accent to the big ones. The garnets measure to 1.3 cm.
3.4 x 2.2 x 1.7 cm, 2.9 x 2.9 x 2.8 cm. Two rare Russian garnet specimens out of the personal garnet collection of Bill Larson: steely gray crystals of andradite garnet, super sharp and with textbook form. One specimen is an absolutely textbook-perfect single crystal, and the other is a group of 4 intergrown crystals.
8.9 x 7.9 x 6.9 cm. Andradite. This crystal is complete all around. It weighs 772 grams. Ex. Bill Larson Collection.
5.4 x 4.4 x 3.8 cm. Here is an extremely large melanite garnet, impressive in every way - not just for its size, but also for its form and luster. It is also in good condition, with just the one natural attachment contact on the bottom, and some very minor corner wear. The crystal has fine symmetry. Ex. Bill Larson Collection.
5.4 x 4.8 x 2.9 cm. What has happened here is that quartz has replaced the original andradite garnet crystals, retaining the sharp form of the andradites. So, what you are left with is a specimen of quartz in the form of garnet. Pseudomorphs of various sorts are not rare, of course, but in this case, the completeness of the pseudomorphing and the widely different crystal forms of quartz and garnet make this one most interesting. Ex. John Seibel.
5.2 x 4.7 x 3 cm. A brilliant druse of very rare yellow Andradite garnet, associated with Rhodochrosite. The Andradites are gemmy and very lustrous, creating a sparkly and very rich coating over much of the specimen. Ex. Charlie Key.
4.6 x 3 x 2.7 cm. A sharp and attractive gemmy intergrown Demantoid Garnet. The largest crystal is 8mm across, has a very attractive blue-green color and is gemmy. The lustrous Garnet sits very aesthetically on the matrix. Ex. Charlie Key.
5.9 x 4.5 x 1.6 cm. This specimen looks at first glance like a Brumado uvite specimen - but, it is a plate of superbly lustrous andradite garnets, from Pakistan. First, a layer of bright olive-colored, smaller garnets grew. Later, three coffee-colored garnets - with two primary ones measuring half a centimeter each - having grown side-by-side.
6.6 x 6.6 x 3.7 cm. Mali is well-known now for the combination of globes of translucent green prehnite in association with dark epidotes, along with a find of yellow "Mali garnets". This, however, is a specimen from a recent find of very large and interesting andradite garnets. They measure up to 3 cm across - so are quite large - with stepped growth on their faces and a sort of metallic deep gray sheen. Very sharp and attractive.
3.3 x 2.2 x 2.1 cm. Andradite. The crystal itself measures 2.2 cm.
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Rob Lavinsky, rob@irocks.com
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