Home > Term: tonstein
tonstein
A compact argillaceous rock containing the clay mineral kaolinite in a variety of forms together with occasional detrital and carbonaceous material; commonly occurring as a thin band in a Carboniferous coal seam (or locally in the roof of a seam); often used as an aid in correlating European strata of Westphalian age.
- Kalbos dalis: noun
- Pramonės šaka / sritis: Mining
- Category: General mining; Mineral mining
- Government Agency: USBM
0
Kūrėjas
- ed.young
- 100% positive feedback
(Milwaukee, United States)