Individuals are rare and have a more blob-like appearance with rounded, deep markings called regmaglypts (also called thumbprints). These bodies were too close to impact to take advantage of atmospheric heating and reshaping effects and so they still have an ‘explosive’ appearance. More commonly found specimens are Shrapnel, identified by a sharp, jagged surface that is a result of the violent explosion that occurred as the fireball came through the Earth’s atmosphere. Sikhote-Alin Meteorites are charactised into two types, ‘Shrapnel’ and ‘Individuals’. How cool! Obviously, I bought myself a Sikhote-Alin meteorite ring right away. I could picture it soaring through the air with a burning streak behind it. When I first saw a piece of Sikhote-Alin meteorite it looked and felt exactly as I imagined meteorites to be: hard, heavy, metallic with a raw, textured surface. With an iron content over 90% these meteorites are much heavier than any Earth rocks. Known as the ‘stone for endurance’ iron meteorites are amongst the densest materials on earth and were once part of the hot core of a long vanished planet. Kamecite, taenite, trilete, schreibersite and chromite are the main component iron-nickel alloys that exist within the meteorite’s composition and by studying them structural classes can be determined. From this, 8,500 specimens have been collected, the largest weighing in at 1,725kg!Ĭlassified as an iron meteorite, the Sikhote-Alin Meteorite contains chemical constituents of 93.2% iron, 6% nickel, 0.47% Cobalt, 0.03% copper, 0.28% Phosphorus and less than 0.01% Silicia. The pre-atmospheric size of meteorite body was suggested to weigh over 1000 tonnes and more than 70 tonnes estimated to have reach the Earth’s surface. It is estimated that over 23,000kg fell that morning leaving behind 120 craters, the largest measuring 6 x 26 metres, with debris covering an elliptical area of 1.62km. The Sikhote-Alin Meteorite is the largest observed meteorite fall in modern history.
SIKHOTE ALIN METEORITE TRIAL
The enormous meteorite left behind a dusty trial of smoke and meteoroid particles that could be seen in the sky until sunset.
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SIKHOTE ALIN METEORITE SERIES
In the 5 seconds of rapid trajectory the meteorite travelled over 600km, exploding mid-flight into fragments, finally impacting the Earth in a series of explosive bangs followed by a thunderous roar that rolled over the hills echoing throughout the villages. At 10.38am on February 12 th 1947 it rained a shower of meteors over the thick forest of Sikhote-Alin Mountains in eastern Russia. Walton's fascination with meteorities resulted in a fine assemblage of specimens representing a spectacular variety of localities, include rarely seen meteorites such as Tres Castillos, Ocotillo, Wold Cottage and Gao, as well as classic meteorites requisite for any meteorite collection.Once upon a time, in a land far, far away in the still frosty morning light, the sky came to life with fireballs as bright as the sun.
Walton's career at NASA, he taught as a missionary in Africa for fourteen years where, in the early1990s, he was instrumental in making the discovery of Gao known to the world. From this study, new and unusual minerals have been discovered. He began his prolific collecting hobby and subsequently chose meteorites as the subject of his dissertation, Phase Equilibrium in the System Farringtonite-Whitlockite-Forsterite at One Atmosphere Pressure. Later, as he prepared for a career in teaching - his life's greatest passion - at Ohio State University, he became intrigued with meteorites. Walton's double major in Geology and Chemistry at Drury College in Springfield, Missouri had led to a Masters Degree in Geochemistry at University of Arizona, after which he became a research chemist at the Minnesota Mining and Manufacturing Company. His team originated and compiled most of the information in NASA's catalogues, Apollo 11 Lunar Sample and Apollo 14 Rock Samples. Wayne Walton was one of the first scientists to study rocks from the first lunar landing, NASA's Apollo 11 mission. Provenance: The Wayne Walton Meteorite Collection
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