| Because they formed within the peat, coal balls generally contain very little detrital clay minerals and quartz. |
| The question is whether ceramics known as gabbroic pottery, including Trevisker ware, include gabbro-rock minerals added as a temper. |
| Potassic minerals were degassed with an argon laser probe using step heating or direct ablation of grains on thin rock sections. |
| The minerals are passed on in a sperm packet during mating, to enrich the eggs. |
| The geosphere is the Earth itself, the rocks, minerals, and landforms of the surface as well as its interior. |
| Other minerals found here are the red ochre, soap stone, white quartz and molding sand. |
