Gem Materials
List of Gem Materials Producers
Virginian Vermiculite LLC
Description: Operates one of two commercial vermiculite ore operations in North America, at a surface mine in Louisa County, VA.
Location: Louisa, Virginia, USA
Bear River Zeolite Co., Inc
Description: Zeolite operates an open pit mine in in Franklin County, Idaho within a sedimentary deposit of hydrothermally altered (zeolitized) volcanic ash.
Location: Thompson Falls, Montana, USA
Website: https://www.bearriverzeolite.com/
Cornerstone Industrial Minerals Corporation
Description: Operates an open pit perlite mine within a unique weathered rhyolitic dome deposit occurring from a single volcanic event in south central Oregon USA
Location: Lakeview, Oregon, USA
Website: http://www.cornerstonemineral.com/