THIS IS A SPECIMEN OF TORBERNITE ON MATRIX (RADIOACTIVE). IT WAS COLLECTED IN THE LA LUZ MINE, NEAR ALAMOS, SONORA, MEXICO IN THE 1960'S. THE SPECIMEN IS APPROXIMATELY 9 X 5 X 4 cm. AND WEIGHS 155 gm. THE SPECIMEN IS RADIOACTIVE. THE TORBERNITE IS IN SMALL CRYSTAL PLATES ON THE SPECIMEN. IT IS A VERY NICE SPECIMEN VERY HARD TO GET TODAY. IT LOOKS BETTER THAN SHOWN IN THE PICTURES. SEE PICTURES. I WILL COMBINE SHIPPING WHEN POSSIBLE.... THANKS FOR LOOKING. DUE TO THE RADIOACTIVITY IT WILL BE MAILED IN A MEDIUM FLAT RATE BOX IN ORDER TO GET THE RA TO AN EXCEPTIBLE LEVEL FOR THE USPS.