This is a compact but highly active Gateway specimen with yellow uranium mineralization visible across several surfaces. Unlike flatter plate-like pieces, this sample has a chunky block shape and good mass for its size, making it a strong natural ore example for collectors who want measurable activity in a small display footprint.
At approximately 70,000 CPM from only 2 oz, this specimen has extreme activity relative to size. It is an excellent high-activity comparison specimen, Geiger counter demonstration piece, or compact uranium-vanadium ore example from a classic Colorado Plateau locality.
SPECIFICATIONS
• Weight: 0 lb 2 oz (56.7 g)
• Dimensions: approx. 1.56 × 1.35 × 1.35 in (4.0 × 3.4 × 3.4 cm)
• Locality: Gateway, Colorado, USA
• Condition: Natural, unprocessed, no stabilization or enhancement
RADIATION INFORMATION
• Measured Activity: ~70,000 CPM / 3.5 mR/hr on Ludlum Model 9
• Instrument: Pancake Geiger probe
• UV Response: Not tested / not noted
• Shipping: Ships legally under UN 2910 – Excepted Radioactive Material
⚠️ Radiation Notice:
This specimen emits measurable ionizing radiation. Avoid prolonged handling and display appropriately.
COLLECTOR NOTES
• Gateway, Colorado is part of the historic Colorado Plateau uranium-vanadium region, known for sandstone-hosted uranium ore and secondary yellow uranium minerals.
• Identified minerals: likely carnotite/tyuyamunite with uranium-vanadium mineralization in sandstone matrix.
• Non-uranium minerals: sandstone, quartz grains, iron oxide staining, probable vanadium-rich oxides or clays.
• Activity relative to size: Extreme — approximately 70K CPM from a 2 oz specimen is very strong.
• Best use case examples: high-activity comparison specimen, educational uranium-vanadium ore example, Geiger counter demonstration piece, compact radioactive mineral display.
• Best for: radioactive mineral collectors, element collectors, Colorado Plateau locality collectors, and buyers looking for a compact specimen with premium activity.
This is a compact but highly active Gateway specimen with yellow uranium mineralization visible across several surfaces. Unlike flatter plate-like pieces, this sample has a chunky block shape and good mass for its size, making it a strong natural ore example for collectors who want measurable activity in a small display footprint.
At approximately 70,000 CPM from only 2 oz, this specimen has extreme activity relative to size. It is an excellent high-activity comparison specimen, Geiger counter demonstration piece, or compact uranium-vanadium ore example from a classic Colorado Plateau locality.
SPECIFICATIONS
• Weight: 0 lb 2 oz (56.7 g)
• Dimensions: approx. 1.56 × 1.35 × 1.35 in (4.0 × 3.4 × 3.4 cm)
• Locality: Gateway, Colorado, USA
• Condition: Natural, unprocessed, no stabilization or enhancement
RADIATION INFORMATION
• Measured Activity: ~70,000 CPM / 3.5 mR/hr on Ludlum Model 9
• Instrument: Pancake Geiger probe
• UV Response: Not tested / not noted
• Shipping: Ships legally under UN 2910 – Excepted Radioactive Material
⚠️ Radiation Notice:
This specimen emits measurable ionizing radiation. Avoid prolonged handling and display appropriately.
COLLECTOR NOTES
• Gateway, Colorado is part of the historic Colorado Plateau uranium-vanadium region, known for sandstone-hosted uranium ore and secondary yellow uranium minerals.
• Identified minerals: likely carnotite/tyuyamunite with uranium-vanadium mineralization in sandstone matrix.
• Non-uranium minerals: sandstone, quartz grains, iron oxide staining, probable vanadium-rich oxides or clays.
• Activity relative to size: Extreme — approximately 70K CPM from a 2 oz specimen is very strong.
• Best use case examples: high-activity comparison specimen, educational uranium-vanadium ore example, Geiger counter demonstration piece, compact radioactive mineral display.
• Best for: radioactive mineral collectors, element collectors, Colorado Plateau locality collectors, and buyers looking for a compact specimen with premium activity.
