RF
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Close up of sandstone formations Photo by Ralph Lee Hopkins Design Pics
RF
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Close up of sandstone formations Photo by Ralph Lee Hopkins Design Pics
RF
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Close up of sandstone formations Photo by Ralph Lee Hopkins Design Pics
RF
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A cross-section of sandstone layers from the Precambrian Era near King George River in the Kimberley Region of Northwest Australia Photo by Ralph Le
RM
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Liesegang patterns Potassium dichromate (K2Cr2O7) reacted with silver nitrate (AgNO3) through a gel forming a series of rings
RM
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Liesegang patterns
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