Wood Ash Crystals, Image Credit: Lori Carter

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Wood Ash Crystals

Crystals can be grown using a process similar to extracting lye from wood ashes. A concentrated solution of alkali salts (sodium, potassium, and calcium) derived from boiling wood ashes produced these beautiful crystals, and a few other trace elements caused the yellow color. 

Specimen by: Daniel Miller

Image Credit: Lori Carter