20 Photo: SCGS Table of Contents This schist is from the Piedmont region in South Carolina. The composition of the parent rock determines the metamorphic minerals and rocks that may form. Are Slate, Phyllite, Garnet Muscovite-Schist regional or contact? It is defined by having more than 50% platy and elongated minerals (such as micas or talc), often finely interleaved with quartz and feldspar. a. Dolomite b. Limestone c. Sandstone d. Shale 8) Which metamorphic rock is formed by contact metamorphism of a shale? Schist (Garnet-Muscovite) Metamorphic. Characteristics include: Visible crystals a. Dolomite b. Limestone c. Sandstone d. Shale 7) Which of the rocks listed below is the parent rock of quartzite? Shale > Gneiss > Phyllite > Schist > Slate 6) Which of the rocks listed below is the parent rock of marble? Distance of the rod from the level (upper reading - lower reading) * 100. Texture - Foliated (Coarse-grained) Minerals present - Garnet and Muscovite. granite. Photos of staurolite schist and kyanite schist are included later in this chapter. It is characterized by an abundance of platy or elongated minerals (micas, chlorite, talc, graphite, amphiboles) in a preferred orientation.Varieties of this rock type share similarities in appearance (schistosity) but may be highly variable in composition. Marble, Quartzite. Some common examples include the following: biotite schist, garnet-staurolite schist, sillimanite schist, granitic gneiss, mafic gneiss, etc. Quartzite, Marble, Gneiss. Regional. This is a schist consisting almost entirely of staurolite and muscovite. The parent rock of Hornblende Schist is. Schist Schist is medium grade metamorphic rock, formed by the metamorphosis of mudstone / shale, or some types of igneous rock, to a higher degree than slate, i.e. Schist is a strongly foliated medium-grade metamorphic rock. Blueschist (/ ˈ b l uː ʃ ɪ s t /), also called glaucophane schist, is a metavolcanic rock that forms by the metamorphism of basalt and rocks with similar composition at high pressures and low temperatures (200 to ~500 degrees Celsius), approximately corresponding to a depth of 15 to 30 kilometers. Schist has medium to large, flat, sheet-like grains in a preferred orientation (nearby grains are roughly parallel). The minerals that develop in a metamorphic rock depend upon: 1) the grade of metamorphism 2) the composition of the parent material So the schist in Figure 8.23 is a garnet schist, and the one in Figure 8.28 is a muscovite schist, or simply a mica schist. Parent Rock - Shale. Shale, siltstone, and some sandstones can provide the parent rock for schist. Schist may contain accessory minerals such as garnet, tourmaline, and pyrite. Distinctively metamorphic minerals such as garnet, staurolite, kyanite, and sillimanite occur in schists, depending on the metamorphic grade and starting composition of the parent rock. A Mica Garnet schist is a metamorphic rock formed from a shale or a granitic mother rock when this is squashed and heated at death in the crust. Non-Foliated. Both regional and contact. Notice how the different layers are weathering at … Schist (pronounced / ʃ ɪ s t / SHIST) is a medium-grade metamorphic rock formed from mudstone or shale. Of quartzite SHIST ) is a schist consisting almost entirely of staurolite and muscovite a schist consisting entirely..., sillimanite schist, granitic gneiss, etc schist may contain accessory minerals such as Garnet, tourmaline and... This is a schist consisting almost entirely of staurolite schist and kyanite schist are included later in this chapter a. Provide the parent rock for schist metamorphism of a shale develop in a orientation. 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