
1) Carbonate mineral 2) Uranium mineral
Found on
https://www.crosswordclues.com/clue/wyartite

Wyartite {Chem|CaU|5+|(UO|2|)|2|(CO|3|)O|4|(OH)}·7H2O is a uranium bearing mineral named after Jean Wyart (1902–1992), mineralogist at the Sorbonne, Paris. Greenish black, black, black violet in color, translucent to opaque orthorhombic crystals presentantion. A hardness of 3 - 4 Mohs. Its other names are Ianthinite (of Bignand), Wyartit and Wy...
Found on
http://en.wikipedia.org/wiki/Wyartite
No exact match found.