Pumice Mines in California

Pumice Mining in California

California has 262 pumice-related mine and mineral deposit locations recorded in federal databases. Of these, 85 are currently active operations. Data comes from the USGS Mineral Resources Data System and MSHA Mine Safety and Health Administration records.

By County

County	Sites
Mono County	57
Inyo County	36
San Bernardino County	35
Siskiyou County	34
Modoc County	16
Napa County	14
Lake County	13
Kern County	12
Madera County	6
Lassen County	5
Contra Costa County	4
Imperial County	4
San Luis Obispo County	4
Shasta County	4
Calaveras County	2
Humboldt County	2
Los Angeles County	2
Nevada County	2
Tehama County	2
Ventura County	2
Amador County	1
Fresno County	1
San Diego County	1
Stanislaus County	1
Trinity County	1
Tuolumne County	1

Pumice Mines

Mine	County	Type	Status
Glass Mountain Pumice	Modoc	Surface	Active
Makayla	Inyo	Surface	Active
Aiken Cinder Mine	San Bernardino	Surface	Producer
American Pumice Company	Inyo		Producer
Andrew Boyd	Mono		Producer
Bacon Pit	Amador		Producer
Black Butte Pit	Tehama	Surface	Producer
Boorman Pumice Products Company	Modoc		Producer
Boorman Pumice Products Company	Modoc	Surface	Producer
Brewster Deposit	Mono		Producer
Brush Mountain Pit	Shasta	Surface	Producer
Brush Mountain Quarry	Shasta	Surface	Producer
Buckley Pumice Deposit	Mono		Producer
Butte Meadows Quarry	Tehama	Surface	Producer
California Pozzolan	Inyo	Surface	Producer
Cinder Pit	Modoc	Surface	Producer
Cinder Products Company	Lake	Surface	Producer
Clear Lake Quarry	Lake	Surface	Producer
Clearlake Lava Pit and Mill	Lake	Surface	Producer
Comstock Deposit	Mono		Producer
Cowan Mine	Mono		Producer
Delta Placer	Mono		Producer
Estella Deposit	Mono		Producer
Fall River Quarry B	Shasta	Surface	Producer
Featherack, Inc.	Mono		Producer
Glass Mountain Claims	Siskiyou	Surface	Producer
Glass Mountain Industries	Siskiyou		Producer
Glass Mountain Industries	Siskiyou	Surface	Producer
Great Northern Railroad Deposit	Modoc	Surface	Producer
Grimes Canyon Quarry	Ventura	Surface	Producer
Grimes Canyon Quarry	Ventura	Surface	Producer
Hallelujah Junction Pit	Lassen	Surface	Producer
Hirschdale Pit	Nevada	Surface	Producer
Hitchcock Brothers Cinders	Lake	Surface	Producer
Horsethief Butte Pit	Siskiyou		Producer
Horsethief Butte Pit	Siskiyou	Surface	Producer
Hyytinen Glass Mountain Quarry	Siskiyou	Surface	Producer
Insulating Aggregates, Inc. Calif. Quarries Co.	Mono		Producer
Inyokern Cinder Pit	Kern	Surface	Producer
Jameson Deposit	Siskiyou		Producer
John Madsen	Siskiyou		Producer
Johnson	Siskiyou		Producer
Juniper Knoll Pit	Siskiyou	Surface	Producer
Klamath Concrete Pipe Co	Siskiyou		Producer
Klamath Concrete Pipe Co	Siskiyou	Surface	Producer
Malby Glass Mountain Quarry	Siskiyou	Surface	Producer
Mathieu Deposit	Mono		Producer
Millerton Lake Quarry	Madera	Surface	Producer
Mount Hoffman	Siskiyou		Producer
Mount Shasta Gravel Co. Mt. Shasta	Siskiyou	Surface	Producer

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