This is an exceptionally high-activity uranium ore specimen from the Colorado Plateau.
Despite its compact size, this specimen registers an extremely strong ~70,000 CPM, making it a standout example of dense, uranium-rich ore.
The rock is dominated by a black, glossy, wet-looking uranium-rich matrix with scattered yellow secondary uranium mineralization along fractures and grain boundaries. Under magnification, the hottest areas show microcrystalline yellow uranium minerals embedded directly within the dark reduced uranium host — a classic high-grade ore texture responsible for the intense activity.
• Weight: 1.6 oz
• Dimensions: approx. 2.5 × 1 × 1 inches
• Locality: Colorado Plateau uranium occurrence (USA)
• Condition: Natural, unprocessed, no stabilization or enhancement
• Measured Activity: ~70,000 CPM
• Instrument: Pancake Geiger probe
• UV Response: No significant fluorescence observed
• Shipping: Ships legally under UN 2910 – Excepted Radioactive Material
⚠️ Radiation Notice:
This specimen emits elevated levels of ionizing radiation. Avoid prolonged handling and display appropriately.
• Extremely high CPM relative to size
• Activity is intrinsic to the rock, not surface contamination
• Strong beta/gamma emitter
• Ideal for CPM tier collections, Geiger counter demonstrations, or advanced uranium displays
• Excellent comparison piece against larger but lower-density uranium ores
This is an exceptionally high-activity uranium ore specimen from the Colorado Plateau.
Despite its compact size, this specimen registers an extremely strong ~70,000 CPM, making it a standout example of dense, uranium-rich ore.
The rock is dominated by a black, glossy, wet-looking uranium-rich matrix with scattered yellow secondary uranium mineralization along fractures and grain boundaries. Under magnification, the hottest areas show microcrystalline yellow uranium minerals embedded directly within the dark reduced uranium host — a classic high-grade ore texture responsible for the intense activity.
• Weight: 1.6 oz
• Dimensions: approx. 2.5 × 1 × 1 inches
• Locality: Colorado Plateau uranium occurrence (USA)
• Condition: Natural, unprocessed, no stabilization or enhancement
• Measured Activity: ~70,000 CPM
• Instrument: Pancake Geiger probe
• UV Response: No significant fluorescence observed
• Shipping: Ships legally under UN 2910 – Excepted Radioactive Material
⚠️ Radiation Notice:
This specimen emits elevated levels of ionizing radiation. Avoid prolonged handling and display appropriately.
• Extremely high CPM relative to size
• Activity is intrinsic to the rock, not surface contamination
• Strong beta/gamma emitter
• Ideal for CPM tier collections, Geiger counter demonstrations, or advanced uranium displays
• Excellent comparison piece against larger but lower-density uranium ores
