Re: Grit; granite vs. limestone

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• To: g*@hort.net
• Subject: Re: [CHAT] Grit; granite vs. limestone
• From: &* R* F* <g*@well.com>
• Date: Tue, 07 Sep 2004 19:59:59 -0400
• In-reply-to: <E1C4Z6Z-0000wx-00@falcon.mail.pas.earthlink.net>
• References: <E1C4Z6Z-0000wx-00@falcon.mail.pas.earthlink.net>

From: Kitty <kmrsy@comcast.net>
Mine's white and gray.

----------

Well, in point of fact, so is mine...bits are white, bits are gray
and there are a few blackish bits in there as well.  But red?  Wonder
what's in yours Rich?

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Likely iron. The gray/white bits are potassium feldspar which
can take up iron to give the reddish color. The clear/greyish
bits are quartz and the blackish bits mica.
-jrf
--
Jim Fisher
Vienna, Virginia USA
38.9 N 77.2 W
USDA Zone 7
Max. 105 F [40 C], Min. 5 F [-15 C]

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• References:
  • Re: Grit; granite vs. limestone
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