In many places in the world, usually associated with schists and other high grade metamorphic rocks.
Sandstone is a protolith as it is, so it does not have a protolith.
"protolith" refers to the original composition of an altered rock. for example, a basalt was the protolith to a rock thats presently a greenschist.
A protolith can be any igneous, sedimentary or metamorphic rock.
diarreah
Garnet is a common component in well metamorphosed schists. Occasionally, a specimen will be good enough to be considered a jewel, but most garnet is valued as an abrasive - the garnet paper at your hardware store. There are about 20 various members of this family.
In many places in the world, usually associated with schists and other high grade metamorphic rocks.
Sandstone is a protolith as it is, so it does not have a protolith.
The parent rock or protolith of phyllite is slate.
"protolith" refers to the original composition of an altered rock. for example, a basalt was the protolith to a rock thats presently a greenschist.
A protolith can be any igneous, sedimentary or metamorphic rock.
The protolith of schist is typically shale or slate, which undergoes metamorphism to form schist. The protolith of anthracite coal is primarily bituminous coal, which is subjected to higher temperature and pressure conditions during metamorphism to convert into anthracite coal.
David Joseph Hall has written: 'Compositional variations in biotites and garnets from kyanite and sillimanite zone mica schists, Orange area, Massachusetts and New Hampshire' -- subject(s): Biotite, Garnet
Sandstone
diarreah
peridotite
A conglomerate (sedimentary rock) is the protolith, or parent rock, of a metamorphic rock called a metaconglomerate.