
Naturally Weathered Chert/Flint Nodule (Geofact)
This specimen is a naturally occurring rock nodule, likely composed of chert or a similar cryptocrystalline quartz material, measuring approximately 3 inches by 2.25 inches. Physically, it displays an irregular, lumpy morphology with an ochre or yellowish-tan exterior patina. The surface is characterized by deep natural fractures, pitting, and water-worn concavities rather than intentional anthropogenic flaking or knapping scars. There is no evidence of a percussion bulb, striking platform, or systematic retouching that would certify it as a prehistoric hand axe or tool. While the user identifies it as a 'portable rock effigy,' the shapes observed are the result of pareidolia—the human tendency to see recognizable patterns in random natural forms. The wear patterns are consistent with environmental erosion and fluvial tumbling over a geologic timescale. There are no maker's marks, signatures, or cultural indentations present. The condition shows heavy natural weathering and cortical mineral buildup typical of surface-found rocks in the Oklahoma region. From an archaeological perspective, the item lacks the diagnostic traits of a lithic artifact and is classified as a geofact.
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Estimated Value
$5 - $15
Basic Information
Category
Geological Specimen / Geofact
Appraised On
February 18, 2026
Estimated Value
$5 - $15
Additional Details Provided By Owner
User Provided Information
Prehistoric flint hand axe portable rock effigy core found in Guthrie OK measuring 3" x 2.25
Item Description
This specimen is a naturally occurring rock nodule, likely composed of chert or a similar cryptocrystalline quartz material, measuring approximately 3 inches by 2.25 inches. Physically, it displays an irregular, lumpy morphology with an ochre or yellowish-tan exterior patina. The surface is characterized by deep natural fractures, pitting, and water-worn concavities rather than intentional anthropogenic flaking or knapping scars. There is no evidence of a percussion bulb, striking platform, or systematic retouching that would certify it as a prehistoric hand axe or tool. While the user identifies it as a 'portable rock effigy,' the shapes observed are the result of pareidolia—the human tendency to see recognizable patterns in random natural forms. The wear patterns are consistent with environmental erosion and fluvial tumbling over a geologic timescale. There are no maker's marks, signatures, or cultural indentations present. The condition shows heavy natural weathering and cortical mineral buildup typical of surface-found rocks in the Oklahoma region. From an archaeological perspective, the item lacks the diagnostic traits of a lithic artifact and is classified as a geofact.
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