[meteorite-list] density????

From: David Freeman <dfreeman_at_meteoritecentral.com>
Date: Thu Apr 22 10:23:51 2004
Message-ID: <3E7FB660.608_at_fascination.com>

Dear Tom;
Mark is very correct. If you look up in a minerals book (my favorite is
the Audubon Society Field Guide to Rocks and Minerals), you can look up
the specific density of different minerals. This is expressed in
relation to water, quartz is 2.5 times heavier than water, most
gemstones, 3 times, Gold...19 to 21 times heavier than an equal volume
of water.
 Rocks, as are meteorites are made up of different combinations of
minerals. With that in mind, it is sort of like trying to standardize
the weight of chicken soup..each batch will vary in its density
depending on the specific ingredients. More carrots and less water,
more chicken, less noodles all will vary the weight. An iron or
iron/nickel rich meteorite will be much more dense than a carbonaceous
chondrite. Breccia's would vary a great deal as well, I would think.
 The difference in one end of a specific portales would vary greatly
from the end of a different portales, depending on silica and iron mixes.
Time for dinner,
Dave Freeman
(who is having chicken soup!)

mafer wrote:

>Hello Tom and list
>
>Calculating the density of a meteorite will only tell you the density of
>that meteorite, not what its components are. Most rock types are specified
>as to specific gravity, but thats for a pure element, not a composite like a
>meteorite or even granite. And thats because a meteorite is made up of many
>elements and even the irons will give a density calculation which isn't for
>iron or nickel.
>Hope this helps somewhat. But its going to leave you asking more questions,
>so think on.
>Mark
>----- Original Message -----
>From: Tom aka James Knudson <knudson911_at_frontiernet.net>
>To: meteorite-list <meteorite-list_at_meteoritecentral.com>
>Sent: Monday, March 24, 2003 2:19 PM
>Subject: [meteorite-list] density????
>
>
>>Hello List, is there anyone out there that can tell me how to calculate
>>density of meteorites or rocks?
>>Thanks, Tom
>>The proudest member of the IMCA 6168
>>
>>
>>
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Received on Mon 24 Mar 2003 08:52:32 PM PST