Uranophane — Smith Hill Mine, New Hampshire, USA

Uranophane is one of the most visually distinctive of the uranyl silicate secondary minerals — its characteristic bright canary-yellow to yellow-orange colouration and silky, acicular crystal habit make it immediately identifiable and genuinely striking in hand sample. This specimen is from the Smith Hill Mine in New Hampshire, a historically significant locality for uranium secondary minerals in the northeastern United States.

Strongly fluorescent under shortwave UV, uranophane specimens reward examination under a UV lamp, typically producing vivid yellow-green emission. A classic secondary uranium mineral for collectors building systematic suites of the uranyl mineral group.

Approx. specimen size: 50mm x 35mm x 15mm

Approx. specimen weight: 23.10 grams

Approx. specimen activity on an SE International Ranger EXP: 9100 CPM