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please help me identifiy this Stone

0 votes

The best I can describe it is some kind of quartz-like material with a bubbled surface. what is it?

here is the stone from the side: alt text

asked Mar 27, 2013 by BENJAMIN (240 points)

4 Answers

0 votes

Could be quartz, opal (hyalite), calcite, or some other minerals. Can you describe the environment and locality where this was found? Also are you able to test hardness?

answered Mar 28, 2013 by hershel (44,400 points)
0 votes

Found in Oregon, in the dirt out in my yard. may have been moved there by someone when the place was built. Most likely central Oregon. I do not know how to perform a hardness test

answered Mar 29, 2013 by BENJAMIN (240 points)

Use a Moh's hardness test. Quartz is very easy to get your hands on (since its so common in nature) and it is a 7 on the Moh's hardness scale. If your stone can both scratch and be scratched by the quartz, then your mineral has a hardness of 7.

0 votes

Take a look at this page where it explains how to do a hardness test: http://www.minerals.net/resource/property/Hardness.aspx You may need to purchase a hardness testing kit online to do this, or bring it into a show where an expert can help you.

Also take a look if it is fluorescent. If you can get access to a shortwave UV light, if its hyalite opal it will exhibit a strong green fluorescence (though chalcedony may as well). Also see if you can find more on your property to determine if you live on the source. Usually where there is one there is more...

answered Mar 31, 2013 by hershel (44,400 points)
0 votes
Calcite or chalcedony I would say.
answered Aug 4, 2015 by Birthstones.eu (1,600 points)

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