Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!ames!pasteur!ucbvax!decwrl!sgi!mitch@bombadl.SGI.COM
From: mitch@bombadl.SGI.COM (Thomas P. Mitchell)
Newsgroups: comp.sources.d
Subject: Re: Gemstones and minerals DATA wanted.
Summary: rocks are a collection of minerals
Message-ID: <25873@sgi.SGI.COM>
Date: 1 Feb 89 18:11:46 GMT
References: <293@philce.UUCP>
Sender: daemon@sgi.SGI.COM
Organization: Silicon Graphics, Inc., Mountain View, CA
Lines: 23

In article <293@philce.UUCP>, henkbo@philce.UUCP (Henk Boetzkes) writes:
> Is there someone who has DATA for determination of Gemstones and minerals, or
> do I have to type it all over from "The Encyclopedia of Minerals and Gemstones".

> Yes I'm makeing an database for it, just for fun.
> Only to make it simple for me to determine any rock.

First -- a rock is composed of a collection of minerals.
I suspect you want data on minerals.   Since there are some
thousands the data file is large.  But there are some good 
tables in most mineralogy text books.  When
I get my books unpacked (just moved) I will be able to give 
some good references.  If you are interested send me mail.

That still doesn't make it simple.  To understand what
I am saying check a set of Dana's out in a good library.  Then 
look at a set of DH&W for the rock forming minerals (silicates).
This should fill nearly two feet of shelf.   The third volume of
Dana's is 3/4 inches thick and only covers quartz (SiO2).  


--
Thomas P. Mitchell  (mitch@sgi.com)