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-Typical colors: Brown, colorless,
gray, white, black, bluish-gray
-Typical sizes: Any
sizes
-Typical shapes: Corallike &
sponge-like fossils
-Most distinguishing characteristic:
Coral-like fossils with agate inside hence "Agatized corals"
-Special Notes:
Red and black colors are somewhat uncommon. Those with druzy quartz crystals
are also uncommon.