This is a dense, high-character uraninite in quartz specimen featuring visible primary uranium ore embedded in a sparkling crystalline matrix. The contrast between the dark uraninite and the iron-stained quartz creates a rugged, almost metallic appearance—this is the kind of piece that feels geologic and serious, not just colorful. It represents uranium in its more original, unaltered form before extensive surface oxidation.
At ~40,000 CPM, this specimen delivers strong, reliable activity while maintaining a solid display presence at over 3 ounces. The visible uraninite makes it especially appealing to collectors who want to own true primary uranium ore, not just secondary minerals. It’s an excellent teaching piece for explaining the difference between primary and secondary uranium mineralization.
• Weight: 3.4 oz (96 g)
• Dimensions: approx. 2.47 × 1.59 × 0.96 in (6.3 × 4.0 × 2.4 cm)
• Locality: Colorado Plateau
• Condition: Natural, unprocessed, no stabilization or enhancement
• Measured Activity: ~40,000 CPM
• Instrument: Ludlum Model 3 with 44-9 pancake probe
• Dose Rate: ~2.5 mR/hr (Ludlum Model 9 ion chamber)
• UV Response: None
• Shipping: Ships legally under UN 2910 – Excepted Radioactive Material
⚠️ Radiation Notice:
This specimen emits measurable ionizing radiation. Avoid prolonged handling and display appropriately.
• Location Blurb: Quartz-hosted uranium ore like this is typical of hydrothermal and sedimentary deposits across the Colorado Plateau and similar uranium provinces.
• Non-uranium minerals: Quartz, iron oxides (hematite/limonite)
• Activity Level: Moderate–Strong for its size
• Best Use Cases: Teaching primary vs secondary uranium, detector calibration comparison, “true ore” display specimen
• Who This Is Best For: Collectors who want authentic uraninite presence rather than just bright secondary minerals
This is a dense, high-character uraninite in quartz specimen featuring visible primary uranium ore embedded in a sparkling crystalline matrix. The contrast between the dark uraninite and the iron-stained quartz creates a rugged, almost metallic appearance—this is the kind of piece that feels geologic and serious, not just colorful. It represents uranium in its more original, unaltered form before extensive surface oxidation.
At ~40,000 CPM, this specimen delivers strong, reliable activity while maintaining a solid display presence at over 3 ounces. The visible uraninite makes it especially appealing to collectors who want to own true primary uranium ore, not just secondary minerals. It’s an excellent teaching piece for explaining the difference between primary and secondary uranium mineralization.
• Weight: 3.4 oz (96 g)
• Dimensions: approx. 2.47 × 1.59 × 0.96 in (6.3 × 4.0 × 2.4 cm)
• Locality: Colorado Plateau
• Condition: Natural, unprocessed, no stabilization or enhancement
• Measured Activity: ~40,000 CPM
• Instrument: Ludlum Model 3 with 44-9 pancake probe
• Dose Rate: ~2.5 mR/hr (Ludlum Model 9 ion chamber)
• UV Response: None
• Shipping: Ships legally under UN 2910 – Excepted Radioactive Material
⚠️ Radiation Notice:
This specimen emits measurable ionizing radiation. Avoid prolonged handling and display appropriately.
• Location Blurb: Quartz-hosted uranium ore like this is typical of hydrothermal and sedimentary deposits across the Colorado Plateau and similar uranium provinces.
• Non-uranium minerals: Quartz, iron oxides (hematite/limonite)
• Activity Level: Moderate–Strong for its size
• Best Use Cases: Teaching primary vs secondary uranium, detector calibration comparison, “true ore” display specimen
• Who This Is Best For: Collectors who want authentic uraninite presence rather than just bright secondary minerals
