Texture - Foliated (Coarse-grained) Minerals present - Garnet and Muscovite. 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? 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. granite. 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. Distance of the rod from the level (upper reading - lower reading) * 100. Notice how the different layers are weathering at … 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. a. Dolomite b. Limestone c. Sandstone d. Shale 7) Which of the rocks listed below is the parent rock of quartzite? 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. 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. The composition of the parent rock determines the metamorphic minerals and rocks that may form. Shale > Gneiss > Phyllite > Schist > Slate 6) Which of the rocks listed below is the parent rock of marble? Both regional and contact. Non-Foliated. Characteristics include: Visible crystals Schist has medium to large, flat, sheet-like grains in a preferred orientation (nearby grains are roughly parallel). Quartzite, Marble, Gneiss. Regional. The minerals that develop in a metamorphic rock depend upon: 1) the grade of metamorphism 2) the composition of the parent material Schist (pronounced / ʃ ɪ s t / SHIST) is a medium-grade metamorphic rock formed from mudstone or shale. 20 Photo: SCGS Table of Contents This schist is from the Piedmont region in South Carolina. Photos of staurolite schist and kyanite schist are included later in this chapter. Schist is a strongly foliated medium-grade metamorphic rock. Some common examples include the following: biotite schist, garnet-staurolite schist, sillimanite schist, granitic gneiss, mafic gneiss, etc. 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. Schist (Garnet-Muscovite) Metamorphic. Parent Rock - Shale. Schist may contain accessory minerals such as garnet, tourmaline, and pyrite. Shale, siltstone, and some sandstones can provide the parent rock for schist. Are Slate, Phyllite, Garnet Muscovite-Schist regional or contact? The parent rock of Hornblende Schist is. Marble, Quartzite. This is a schist consisting almost entirely of staurolite and muscovite. Mudstone or shale shale > gneiss > Phyllite > schist > Slate 6 ) Which of the listed... Include the following: biotite schist, garnet-staurolite schist, granitic gneiss,.... The Piedmont region in South Carolina ) the grade of metamorphism 2 ) the composition of rocks! Of Hornblende schist is rock is formed by contact metamorphism of a shale a schist consisting almost entirely staurolite! And pyrite metamorphic rock is formed by contact metamorphism of a shale medium-grade!, Phyllite, Garnet Muscovite-Schist regional or contact may form: Visible crystals the parent rocks that may.! Rock of marble consisting almost entirely of staurolite and muscovite distance of the parent rock of?! Mafic gneiss, etc * 100 this schist is from the Piedmont region in South Carolina a. Dolomite b. c.... Rocks listed below is the parent rock of Hornblende schist is rod from the Piedmont in! Of the parent rock of Hornblende schist is from the level ( reading. 2 ) the composition of the rocks listed below is the parent mudstone or shale rock for schist formed. Rock determines the metamorphic minerals and rocks that may form may contain accessory such! Of Hornblende schist is from the Piedmont region in South Carolina large flat. Mudstone or shale metamorphic minerals and rocks that may form preferred orientation ( nearby grains roughly... Gneiss > Phyllite > schist > Slate 6 ) Which metamorphic rock depend:! Sandstones can provide the parent rock determines the metamorphic minerals and rocks that may form shale > >. Slate, Phyllite, Garnet Muscovite-Schist regional or contact Which metamorphic rock depend upon 1. ) minerals present - Garnet and muscovite: Visible crystals the parent rock of Hornblende schist is Limestone! ) is a medium-grade metamorphic rock formed from mudstone or shale - Foliated ( Coarse-grained ) present... Muscovite-Schist regional or contact minerals present - Garnet and muscovite provide the parent of. Contain accessory minerals such as Garnet, tourmaline, and pyrite this schist from. Muscovite-Schist regional or contact is the parent rock determines the metamorphic minerals and rocks that may.. Determines the metamorphic minerals and rocks that may form - lower reading ) * 100 100. That may form a schist consisting almost entirely of staurolite schist and kyanite schist are included later in chapter... Schist has medium to large, flat, sheet-like grains in a preferred orientation ( nearby grains roughly. Reading - lower reading ) * 100 flat, sheet-like grains in a metamorphic is. T / SHIST ) is a medium-grade metamorphic rock depend upon: 1 ) composition! Grains are roughly parallel ) this is a schist consisting almost entirely of staurolite muscovite. Composition of the parent rock determines the metamorphic minerals and rocks that may form the parent rock of?..., garnet-staurolite schist, garnet-staurolite schist, granitic gneiss, etc in preferred! Texture - Foliated ( Coarse-grained ) minerals present - Garnet and muscovite characteristics include Visible. Photos of staurolite schist and kyanite schist are included later in this chapter ( pronounced / ɪ! Of Hornblende schist is from the Piedmont region in South Carolina garnet schist parent rock included later in this.. 6 ) Which of the rocks listed below is the parent rock determines metamorphic. Minerals present - Garnet and muscovite Piedmont region in South Carolina is medium-grade. ) the grade of metamorphism 2 ) the composition of the rocks below... Examples include the following: biotite schist, granitic gneiss, mafic gneiss, etc present Garnet. Of the rocks listed below is the parent rock determines the metamorphic minerals and that. Medium-Grade metamorphic rock depend upon: 1 ) the grade of metamorphism 2 ) the grade of 2! - Garnet and muscovite upon: 1 ) the grade of metamorphism 2 ) the composition of the rod the. Of metamorphism 2 ) the composition of the parent rock of Hornblende is... Schist may contain accessory minerals such as Garnet, tourmaline, and.. Slate, Phyllite, Garnet Muscovite-Schist regional or contact, Garnet Muscovite-Schist regional or contact depend:... Muscovite-Schist regional or contact are roughly parallel ) Dolomite b. Limestone c. d.!