pitchblende

It is known as pitchblende due to its black color and high density.

There wasn't even any evidence that the pitchblende had been from here.

Had he found pitchblende he would have been in the point for months.

I'm to bring the sled back to the pitchblende site."

Excellent was their response to news of the pitchblende deposit, with "continue" added.

He was the first to discover uranium while studying the mineral pitchblende.

These minerals are of little commercial value as most uranium is extracted from pitchblende.

More proof, Blade thought, that the meta was really pitchblende.

Pitchblende: a brown to black mineral that has a distinctive luster.

His eyes, like his hair, were as black as pitchblende.

I've never seen any pitchblende, so I wouldn't know.

"Pitchblende," said Jonnie, who had done a lot of homework.

Specimens show still the cell structure of the wood but made of pitchblende.

Pitchblende in an underground vein proved rich enough to trigger fission.

The cliff contains pitchblende veins that have been sources of dissolved uranium.

I believe they are interested in the pitchblende."

The mine had a "tremendously rich lode of uranium pitchblende.

Varian reported in next about the first pitchblende deposit, interrupting his construction of the terrain.

Sisters, did your friends here ever tell you about the pitchblende in the western Ponath?"

He helped unearth the vast and profitable pitchblende deposits in the far north region of the province.

Pitchblende is a complex mineral; the chemical separation of its constituents was an arduous task.

Pitchblende is a major ore of uranium.

This element was the first one discovered by the Curies while they were investigating the cause of pitchblende radioactivity.

In Sarma there were whole mountain ranges of pitchblende.

Radium does not exist free in nature; rather, like uranium, it is melded into the mineral pitchblende.