Uraninite, “Gummite”: Palermo mine, Groton, New Hampshire USA

Description

Species: Uraninite, “Gummite”

Locality: Palermo mine, Groton, Grafton County, New Hampshire USA

Dimensions: 9 x 8 x 6.5 cm. (498 grams)

Ex. David P. Wilber Collection

This is a highly-unusual specimen, featuring a complete vein (around 2 cm wide) of crystalline uraninite with minor orange-yellow “gummit” cutting pegmatite, from the famous Palermo pegmatite in New Hampshire, USA. Not only visually-striking and unique, but a very HOT specimen at over 250,000 CPM on my Ludlum Model 3 Counter with the 44-9 probe. One of my favorite Wilber collection radioactives!