Meteorite

[ChrisWhewell]

Located this in glacial till in Ohio 20+ years ago, among about literally tens of millions of other rocks. Mostly silicates, feldspars, sandstones, etc ranging in size from pebbles to boulders. It has an obvious fusion crust, magnet sticks to it strongly. Ran the detector a long time - very few rocks set it off. This one did. Sliced and polished a section of it, a few shiny specs of metal in it, a grey matrix, some olivine and other silicate domains. I asked a genius professor about it and he said, since it contains no nickel, it can't possibly be a meteorite. So much for geniuses - I replied "Do you mean, everything outside of the earth, every rock floating around in the universe, has nickel in it?" Analysis below, by XRay fluorescence. Notice high terbium content, 10%. No other ore I've been able to locate has 10% Tb. Specimen weighs 2250 grams, so, contains about $100 worth of Terbium. It was evident it came from space - an landed in some sand. The sand had stuck to the silicaceous portions on the outer shell of this rock, becuase it landed in a very hot state and any silica around it would have stuck to those areas. Too bad I knocked them off but parts of the sand are still on the outside. Note also, the presence of Iridium, but no other platinum group metals. This rock has a good story behind it, for the person who knows how to interpret the clues of its composition.

Fe- 70.9%
Ti- 15.0%
Tb- 10.0%
Ca- 2.0%
Mn- 1.2%
Sr- .1%
Zr- .1%
Zn- .1%
Ir- .1%
Si- .008%


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[Terry Soloman]

Looks terrestrial to me. Want to share a magnetite bar with me?

 

[ChrisWhewell]

I've seen tons of magnetite over my life, its not magnetite. I possess the only known rock that's 10% terbium, LOL

 

[Terry Soloman]

Congratulations.

 

[Tylerderden66]

Wow! Have you contacted any meteorite dealers?

 

[Traildust69]

Saw a vid about prices for thin slices going for around $100k.


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[ChrisWhewell]

Saw a vid about prices for thin slices going for around $100k.


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Its so bizarre. When I found it, there were about 25 areas on its surface, about 8mm in diameter, that were coated with sand. Like a dummy I scraped them off. My theory is that it fell in a molten state into a shallow body of water and embedded in the sand. And, the SiO2 of the sand, being chemically similar to the composition of those 8mm circular areas, stuck to those circular areas only. In the interior, there are what appear to be shrinkage cracks, as if it cooled quickly. Absolutely not magnetite. And also definitely not a "volcanic bomb" It has about a 0.3mm thick layer that matches the description of a fusion crust, all about its entire exterior