crookesite

[ krook-sahyt ]
/ ˈkrʊk saɪt /

noun

a rare mineral, selenide of copper, thallium, and silver, (Cu, Tl, Ag)2Se, occurring in steel-gray, compact masses.

QUIZZES

THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?

Did you ever collect all those state quarters? Put them to good use on this quiz about curious state monikers and the facts around them.
Question 1 of 8
Mississippi’s nickname comes from the magnificent trees that grow there. What is it?

Origin of crookesite

1865–70; after Sir W. Crookes; see -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020