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Surprisingly, the IGM team also found small quantities of platinum group elements in the meteorite's fusion crust...
...its presence is unusual as the fusion crust is formed over too short a time period for these elements to easily accumulate. "Platinum group elements usually occur as trace elements dispersed in meteorite minerals, but we found them as a nanometer-sized mineral (100-200 nm) in a metal-sulfide globule in the fusion crust of the Chelyabinsk meteorite," explains Dr Sharygin. "We think the appearance (formation) of this platinum group mineral in the fusion crust may be linked to compositional changes in metal-sulfide liquid during remelting and oxidation processes as the meteorite came into contact with atmospheric oxygen."
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...is used for coating missile nose cones, jet engine fuel nozzles, etc., which must perform reliably at high temperatures for long periods of time.
...a Russian news website published claims that the meteorite was shot down by the government to prevent further harm.
Russia Today reported that an air defense unit at the Urzhumka settlement may have blown the meteorite to pieces at about 20 km above the Earth.
The rumour originated with the local Znak newspaper, quoting a military source - though it cannot and has not been verified.
The source said the vapor condensation trail of the meteorite showed it had been intercepted by a missile.
Originally posted by Glassbender777
Either Russia has a Missle shield in place for incoming Nuclear warheads, and decided to test its operations on an incoming Metorite, or the Missle Unit got extremely lucky, and the decision to fire was done in a matter of a second or so.
Originally posted by Glassbender777
Either Russia has a Missle shield in place for incoming Nuclear warheads, and decided to test its operations on an incoming Metorite, or the Missle Unit got extremely lucky, and the decision to fire was done in a matter of a second or so.
In the course of the past twenty years, the writer has made a special study of the platinum content of meteorites. Practically complete analyses, including platinum, have been made of 29 falls, comprising 19 siderites, 9 aërolites, and one pallasite (siderolite). An extremely interesting fact brought out by these analyses is that platinum was present in every instance. Possibly of even more interest is the fact that the meteorites with high nickel content were found to contain much more platinum than those with low nickel content. Following are some representative assays: siderites containing about 16% of nickel yielded about 119 parts per million of platinum; siderites with 6% to 8% of nickel contained about 14 parts per million of platinum; while aërolites containing a little over 1% of nickel contained about 1.7 parts per million of platinum. While there are some exceptions to these ratios, the general uniformity is striking.