Ataxites Meteorite Heaven Sent measures 59 mm x 55 mm x 45 mm

$ 349.00

Some iron meteorites reveal no obvious internal structure upon etching, and they are called ataxites, for the Greek word for “without structure”. Ataxites consist primarily of nickel-rich taenite, and kamacite is found only in the form of microscopic lamellae and spindles.

Consequently, ataxites represent the most nickel-rich meteorites known, and are among the most rare. Among the 50 witnessed iron meteorite falls, none has been an ataxite; all of the known ataxites are finds.

Paradoxically, the largest meteorite known, Hoba, belongs to this rare structural class

location: Tanna Tuva, Tuvinskaya, Russia,

Many masses–including individuals up to 20kg–of total weight about 80kg were found in the Chinga stream, a tributary of the Upper Yenisey from the Tannu Ola Mountains. Analysis; 16.38% Ni, 0.181 ppm Ga, 0.082 ppm Ge, 3.6 ppm Ir. Many of the specimens are strongly oxidized, and some have the torn appearance characteristic of fragments from meteoritic craters such as Canyon Diablo and Henbury. It is thought that this fall was associated with a crater that has disappeared through erosion, or perhaps has simply passed unnoticed. Fieldwork in 1963 failed to find any crater. Fragments of metal with 16.37% Ni found in the alluvium of the upper Argolik River, Tuva district, are now attributed to the Chinga fall.

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Description

We Have been Lucky enough to acquire some more of these rare and wonderful specimens to remind us that there is still more to be learnt about the heavens

Some iron meteorites reveal no obvious internal structure upon etching, and they are called ataxites, for the Greek word for “without structure”. Ataxites consist primarily of nickel-rich taenite, and kamacite is found only in the form of microscopic lamellae and spindles.

Consequently, ataxites represent the most nickel-rich meteorites known, and are among the most rare. Among the 50 witnessed iron meteorite falls, none has been an ataxite; all of the known ataxites are finds.

Paradoxically, the largest meteorite known, Hoba, belongs to this rare structural class

WITH THE SALE OF THESE SPECIMENS WE WILL SEND THE BUYERS A NOTE OF INFORMATION AVAILABLE TO US AT gregsshowcase

Additional information

Weight .349 kg

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