cerargyrite
noun
ce·rar·gy·rite
sə̇ˈrärjəˌrīt
plural -s
1
: a white to pale-yellow or gray mineral consisting of silver chloride AgCl and darkening on exposure to light
2
: a group of isomorphous silver halides that includes mainly cerargyrite, bromyrite, and embolite
Word History
Etymology
French kérargyre cerargyrite (from Greek keras horn + argyros silver), translation of Swedish hornsilver + English -ite