Agates &
Thundereggs
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Agates & Thundereggs
   Behold, the agates which can be considered prettiest and strangest of any rocks. Basically, agates are made up of the films of quartz microcrystals which each film/band represents each wet period/season similar to the tree growth rings but in reversed way sometimes in an unexplainable manner. The impurities such as iron oxide ("rust") provide a wide variety of colors to the agates. The agates come in a wide variety of forms from amygdaloidals (gas bubbles in lava) to "Lithophysae ("thundereggs").


What's the Difference Between  Amygdaloid Agates, Thundereggs and Sedimentary Agates?


Agates, Amygdaloidal type:
  Examples: Laguna Agates, Lake Superior Agates, Agate Creek Agates.


Agates, Lithophysae (Thunderegg) type:
   Examples: Baker Eggs, & Oregon Thundereggs


Agates, Sedimentary type:
   Examples: Kentucky Agates, Fairburn Agates & Tampa Bay Agatized Corals.


Agates in Other Forms
   Examples: Crazy Lace Agates Vein Agates & Polyhedroids,
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