Diatomaceous Earth (Diatomite) Mines

Diatomaceous Earth (Diatomite) Mining in the United States

Federal databases document 15 diatomaceous earth (diatomite)-related mine and mineral deposit locations across the United States. Of these, 11 (73%) are currently active operations tracked by MSHA. These records span active mines, past producers, mineral prospects, and geological occurrences identified through federal surveys.

Top States

State	Sites
Nevada	7
Oregon	4
California	2
Washington	1
Arizona	1

Notable Sites

Mine	State	County	Status
Celatom Mine	Oregon	Malheur	Active
Celatom Plant	Oregon	Malheur	Active
Clark Operations	Nevada	Storey	Active
Colado Mine	Nevada	Pershing	Active
Colado Plant	Nevada	Pershing	Active
Dicalite Minerals	California	Shasta	Active
Fernley Operations	Nevada	Churchill	Active
Fernley Plant	Nevada	Lyon	Active
Grefco Mine & Mill	Nevada	Nye	Active
Imerys Lompoc Plant	California	Santa Barbara	Active
Quincy Wa Mine	Washington	Grant	Active
Clark Mine	Nevada	Storey	Abandoned
De-Source	Oregon	Malheur	Intermittent
Rustler Pit	Oregon	Douglas	Intermittent
White Cliffs Mine & Plant	Arizona	Pinal	Abandoned