Australite Tektites

Australite Tektites

Australite Tektites For Sale

Australite tektites are a group of tektites generally believed to be members of the very large Indochina strewnfield. However, Australites are distinguished from other indochinites by their shape. They have traveled from the still unlocated impact site in a very different way from other tektites and have ablated surfaces and have developed flanges of melted glass on their perimeters. These flanged Australites are highly prized and rare. Often the flange with be thin and transparent. On the surface that was facing down during flight and melted are often seen an intricate pattern of circular ridges. These ring waves produced by the air currents on the liquid surface can be both interesting and beautiful. On most occasions the ablation surface or aerodynamic stress shield has detached from the main body of the specimen resulting in the formation of a core type Australite. These though lacking any flange remain very interesting tektite specimens.

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About Australite Tektites

Australite Flanged Button Tektites

Australite Flanged Buttons are the most highly developed of the aerodynamically shaped tektites. They glass bodies reentered the Earth's atmosphere at sufficient speed to melt and develop a curved front surface covered with ringwaves and a perimeter of glass that was once fluid and became the flange. The flange on button tektite is often very transparent and the value increases as the transparency increases. These are truly rare and spectacular specimens. Being delicate and fragile few have survived intact and they are always highly prized by collectors.

Australite Boats

Australites from Australia are generally round, however there are other shaped found. Elongated flanged tektites are formed by similar processes as round ones. They return to Earth at speeds great enough to cause their front surface to melt and the liquid material to form a flange. They have ringwaves on their ablated surface. These are very rage tektites and not many elongated flanged australites exist. So, even ones with partial flanges are very coveted after by collectors.

Australite Cores

Australite Cores - The formation of a flange on an australite seems to be a very stressful process to the glass body as it is fall back to Earth. In most cases the tektite can not make it to the ground with its flange intact. At some point the entire front of the tektite will detach. Several theories have been presented to account for this detachment of the ablated surface and flange. Among most reasonable is that there is thermal stress between the hot melted surface and the cold glass of the remainder of the body. Cracks form and the aerodynamically shaped portion spalls away. What is left is referred to as a core. It is very easy to distinguish a core visually. It will have the remains of the location of the flange as a bump running around its perimeter, The curved posterior side will look just as it does on the unablated side of a flanged button. However there will be numerous flats around the perimeter of the core where aerodynamically shaped material has broken away in sections. The surface that had ringwaves is of course by definition gone as well.