Google Answers: white frosted patina on silica stones

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Q: white frosted patina on silica stones ( No Answer, 2 Comments )

Question

Subject: white frosted patina on silica stones
Category: Science > Chemistry
Asked by: ipmoc-ga
List Price: $5.00

Posted: 24 Mar 2005 04:47 PST
Expires: 23 Apr 2005 05:47 PDT
Question ID: 499630

I am having trouble understanding how white patina forms on silica
based rocks, especially flint~cherts~agates. This is usually from high
calcium/lime soils but I dont just cant find out if this frosting
effect is a bleeching of the stone or if its absorbing an element to
make it white and why it actually happens.

Thanks for your time,

Ben

Answer

There is no answer at this time.

Comments

Subject: Re: white frosted patina on silica stones
From: gilligan104-ga on 24 Mar 2005 07:34 PST

precipitation

Subject: Re: white frosted patina on silica stones
From: ipmoc-ga on 24 Mar 2005 09:30 PST

that explains nothing,can you be even more vague if you tried?

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