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Posted by: Donald Kasper
Most models of geologic formation of agates pick and chose what fits their concept of formation. All of the data must be taken into account. Inferior models are easily disproven. For example, granites have 30% quartz, have voids, and are exposed to weathering. Show me one agate in one granite of this planet. You cannot. Therefore the weathering model just dropped dead. Having quartz around to erode does not work. Quartz does not weather. It must be mechanically broken down. Germany has Permian age geodes with kaolinized lava and pure agate cores that are totally unaffected. If exposed to weathering in very wet conditions, the Permian agates are 100% intact and filled with kaolinite in the fiber bands as the bands are porous. Agates are not quartz layers. They are groups of fiber bands of quartz and moganite, and occasional layers of pure crystal quartz. There are also microspheres in the agates. Inferior technology based on refractive index in the 1800's presumed these were opals. Infrared spectroscopy and Raman spectroscopy proves these are moganite structures. So you have one moganite in the fibers, and another immiscible form. Let me see. The moganite in the fibers makes a 555 cm-1 band, and the other moganite microspheres does not. Raman reports both are moganite. Perhaps one is alpha-moganite and the other is beta-moganite. We have now found our beta-moganite, only found in ignimbrite rocks or rocks exposed to pyroclastic flows. In essence, a galaxy of complexity reduced to stupidity for bland generalizations. The tubes making moss structures are not bacteria unless you can show a bacteria that precipitates celadonite, because that is what infrared shows them to be.