Uraninite, “Gummite”, Schoepite: Ruggles Mine, Grafton, Grafton County, New Hampshire, USA

Species: Uraninite, “Gummite”, Schoepite
Locality: Ruggles Mine, Grafton, Grafton County, New Hampshire, USA
Dimensions: 4.8 x 7.3 x 1.2 cm., 66 grams

Ex. George Kamin Collection

Excellent, colorful slabbed specimen of brightly-colored dendritic uraninite with various “gummite” group minerals and cyrtolite zircon in feldspar matrix from the famous Ruggles mine in central New Hampshire, USA. Measures ~100,000 CPM on my Ludlum Model 3 counter with the 44-9 probe. Rare!!