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Ice formation on chalk Stones
Many small (3cmx3cm) chalk stones locally all showed similar ice formations after the very low temperatures in UK (Surrey) recently. Each had a column of ice, typically 5cm or 6cm tall, protruding out of the soil above them, firmly attached to the chalk pieces. I cannot find examples of this on the web or elsewhere. They originally gave the impression of being fungi, as the photo suggest. Many thanks for any explanation you can give. Is this a documented effect? Is it well known or rare? Jane Tenty