[meteorite-list] "How Do You Know It's A Meteorite"?

From: Walter Branch <waltbranch_at_meteoritecentral.com>
Date: Mon, 7 Apr 2008 13:57:58 -0500
Message-ID: <006101c898e1$4c5ebd80$6601a8c0_at_DrCollman>

>I always tell people that a particular found meteorite has the same
>characteristics and chemical makeup as the hundreds of witnessed falls
>that have been carefully studied by science. We know those came from
>outer space. "And this one in my hand matches those."

Hi Bob.

That is very similiar to what I generally say. I also add that the chemical
composition does not match any known Earth rock. The person
usually addes something to the effect that they know where "tons of rocks"
just like those can be found. To which I add, "great bring me one. I buy
it from you."

Haven't bought one yet!

-Walter Branch




-----------------------------------------------------
----- Original Message -----
From: "Bob King" <nightsky55 at gmail.com>
To: <Meteorite-list at meteoritecentral.com>
Sent: Monday, April 07, 2008 12:39 PM
Subject: Re: [meteorite-list] "How Do You Know It's A Meteorite"?


> Hi all,
> I always tell people that a particular found meteorite has the same
> characteristics and chemical makeup as the hundreds of witnessed falls
> that have been carefully studied by science. We know those came from
> outer space. "And this one in my hand matches those."
> Bob
>
> On Mon, Apr 7, 2008 at 11:06 AM, Mark Ford <mark.ford at ssl.gb.com> wrote:
>> >> "How do you know it's a meteorite"?
>>
>> Something like
>>
>> - Because it meets some or all of the criteria that have been established
>> over many decades to indicate it is of meteoritic origin. Such as having
>> a fusion crust, possible presence of Nickel, and chemical or physical
>> structure that places it amongst the other rocks of identical composition
>> (and thus origin).
>>
>>
>>
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Received on Mon 07 Apr 2008 02:57:58 PM PDT