CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY
Cleavelandite crystals. View of crystals of cleavelandite, a variety of the mineral feldspar called albite. Cleavelandite consists of thin plates of transparent white crystals that can grow over 15 cm in diameter. Albite is the last of the plagioclase feldspars (Na.Al.Si3.O8) to crystallize out from molten rock as it cools.
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