| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Feldspathic sandstone | Mining | A feldspar-rich sandstone; specif., a sandstone intermediate in composition between an arkosic sandstone and a quartz sandstone, containing 10% to 25% feldspar and less than 20% matrix material of clay, sericite, and chlorite. See also: arkose. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
