chalcolite

Her experiments with synthetic chalcolite, the study of all chemical compounds of uranium and thorium, and the testing of all known chemical elements and certain minerals all occurred in this early period.

Trafficking Materials and Gendered Experimental Practices: Radium Research in Early 20th Century Vienna 2007

Her experiments with synthetic chalcolite supported her hypothesis and prompted Pierre Curie to involve himself fully in the study of radioactive substances.

Trafficking Materials and Gendered Experimental Practices: Radium Research in Early 20th Century Vienna 2007

To explain this point I prepared synthetic chalcolite from pure products, and obtained crystals, whose activity was completely consistent with their uranium content; this activity is about half that of uranium.

Marie Curie - Nobel Lecture 1966

But an unexpected fact was noted: certain minerals (pitchblende, chalcolite, autunite) had a greater activity than might be expected on the basis of their uranium or thorium content.

Marie Curie - Nobel Lecture 1966

To explain this point I prepared synthetic chalcolite from pure products, and obtained crystals, whose activity was completely consistent with their uranium content; this activity is about half that of uranium.

Radium And The New Concepts In Chemistry: Nobel Lecture 1911

But an unexpected fact was noted: certain minerals (pitchblende, chalcolite, autunite) had a greater activity than might be expected on the basis of their uranium or thorium content.

Radium And The New Concepts In Chemistry: Nobel Lecture 1911