"Bluish fibrous banded spherulites ("eyes") and crusts of wardite, rimmed by concentrically banded yellowish to white to brown fine-grained crandallite. Colourless composite hexagonal micro crystals of carbonate-fluorapatite in cavities. Exchange with Harvard University Mineralogical Museum (C. Frondel), July 21, 1958."
Much of this material was collected in the late 1930s and subsequently sold in gift shops by places such as The Smithsonian and the National Museum in palm-sized slabs, which is the most common way collectors come across it. Making this piece a bit more special.
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