Message Index Start New Topic Photo Gallery FAQ and Use Tips Bob's Rock Shop

Posted in response to Non-siliceous from tony goffe on November 21, 2012 at 01:40:24:

Re: Non-siliceous

Hi Tony,

Did you find these yourself? If so, what type of geologic environment did they come from? It could be a chemically weathered agate, or a banded non-silica mineral. There are a number of non-silica minerals that can exhibit "agate-like" banding. Some examples include calcite (calcite "onyx"), malachite, rhodochrosite, wavellite..just to name a few. I also remember reading about a "calcite agate" that was found somewhere in Europe--might have been in the latest Agates book by Zenz. Do you have any available for trade?

Mark

From Mark Hurry - December 09, 2012 at 01:15:33
Email:

Message: 70561



Message Reply Form

Use the form below to post a reply to the Re: Non-siliceous message. If you haven't read the Rock Net FAQ and User Tips yet, now would be a good time to do so.

Your Name: (Required)
E-Mail Address: (Optional)
Subject: Re: Re: Non-siliceous
Reply Message: (Required)
Last chance to check your message for typos!

Message Index Start New Topic Photo Gallery FAQ and Use Tips Bob's Rock Shop

Bob Keller