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Is sedimentary rock a mineral or a rock?
Clay minerals and quartz are the chief constituents of most sedimentary rocks in this category. To answer why, clay minerals are the most abundant product of the chemical weat…hering of silicate minerals, especially the feldspars. Clays are fine-grained minerals with sheetlike crystalline structures similar to the micas. Quartz is abundant because it is extremely durable and very resistant to chemical weathering. Thus, when igneous rocks such as granite are attacked by weathering processes, individual quartz grains are freed.
It melts into molten rock
Quartz starts out as an igneous rock, but that rock can weather, it can have little pieces broken off by various processes, and those pieces can then wash away in the rain and… wind up in some body of water as sediment.
Mica and feldspar are usually found in sedimentary rocks
Quartz, calcite, clay, and iron could all be cementing minerals in sedimentary rock..
A chemical sedimentary rock. Evaporites are formed in this depositional environment. Salts, carbonates, and sulfates mostly. Halite, sylvite, calcite, gypsum, etc.
Chemical sedimentary rock is formed from the precipitation out of, or evaporation of saturated solutions. Rock salt, rock gypsum are examples of chemical sedimentary rock.
both are found underground
Ruby is a variety of the mineral corundum, and is not classified as sedimentary, igneous, or metamorphic in the manner of rocks.
limestone, it's made of compreessed shells in the ocean.
Chemical sedimentary rocks, such as oolitic limestone.
Coltan is an ore formed of columbite and tantalite and occurs in igneous rocks.
Cobalt is a mineral, not a rock.