Autunite, Uranophane, Albite: Ruggles mine, Grafton, Groton Co., New Hampshire USA

Description

Species: Uranophane, Autunite, Albite

Locality: Ruggles mine, Grafton, Groton Co., New Hampshire USA

Dimensions: 20 x 11 x 6.5 cm.

A nice very large, rich specimen of colorful secondary uranium minerals from the famous Ruggles mine, Grafton, Groton Co., New Hampshire USA. Measures ~60,000 CPM on my Ludlum model 3 survey meter with the 44-9 probe. Ex. Mount Holyoke College (Massachusetts). Brightly fluorescent under U.V. light. Rare!!