[meteorite-list] NEW Eucrite, absolutely the strangest ever seen!]

From: E.J <jonee_at_meteoritecentral.com>
Date: Thu Apr 22 10:28:32 2004
Message-ID: <3F9229B6.1060500_at_epix.net>

Yes Mark's definition more closely defines a conglomerate and, more
distantly, a breccia.

A Gabbro is a type rock, usually with large visible crystals(indicating
a slow cooling), plutonic in origin and, contains feldspar and pyroxenes
(--if I remember correctly. Let me find my rock-types book(vs mineral
book)to make sure)

I think to be a gabbro it must contain olivne form within the pyroxenes
but can't say for certain.

Bowen where are you?(as in Bowen's Reaction
Series)

Elton

N Lehrman wrote:

> Mark & others,
>
> This is totally absurd. Look up "gabbro" if you can spell it. Then
> write.
>
> Norm (an earth geologist that doesn't make up new definitions---)
>
> ----- Original Message -----
> *From:* Mark Ferguson <mailto:mafer_at_imagineopals.com>
> *To:* tett <mailto:tett_at_rogers.com>
> *Cc:* meteorite-list_at_meteoritecentral.com
> <mailto:meteorite-list_at_meteoritecentral.com>
> *Sent:* Saturday, October 18, 2003 7:49 PM
> *Subject:* Re: [meteorite-list] NEW Eucrite, absolutely the
> strangest ever seen!
>
> Hi Tett and list
>
> A gabro is a collection of individual rocks (they don't have to be
> the same kind of rock either) welded or held together by some
> cemmenting substance. Here on earth, the cemment can be
> cristobalite, opal, limestone, stiltstone, and many other items. A
> cemment with rock in it is a manmade gabro. So, gabroic infers
> that it is like a gabro.
>
> Mark
>
Received on Sun 19 Oct 2003 02:05:42 AM PDT