Metamorphic Rocks

Name of rock [components]
1. Colours
2. Type; Grain and texture
3. Uses
Amphibolite [Amphibole, plagioclase, biotite, diopside, garnet, spatite, magnetite, ilmenite, sphene]
1. Dark green to black, with white spots
2. Regional; Medium to coarse, banded
3. Rarely used in building
Calc-silicate Rock [Calcite, olivine, periclase, serpentine, tremolite, diopside, wallastonite, vesuviusite, garnet]
1. Grey, black, red, green
2. (n/a); Medium to coarse
Calciphyre [Calcite, wollastonite, garnet, plagioclase, scapolite, diopside, sphene, ilmenite,clintonite, graphite, quartz, phlogopite, brucite, spinel]
1. Brown, light green, blue, white
2. Contact; fine to medium
3. Scientific
Coal [Vegetable matter]
1. Brown, black
2. (n/a);
3. Fuel for heating and generating electricity
Eclogite [Pyroxene, garnet, kyanite, diamond]
1. Green, red
2. Regional; Medium to coarse, banded, dense
3. Rarely used in building
Gneiss [Feldspar, mica, quartz, apatite, epidote, garnet, hornblende, ilmenite, magnetite, pyrite, monazite, pyrrhotite]
1. Grey, pink, in layers
2. Regional; Medium to coarse
3. Rarely used in building
Granulite [Feldspar, granite, augite, quartz, corundum, enstatite, kyanite, magnetite, rutile, spinel]
1. Dark, black, with light parts
2. Regional; Coarse, resistant to the elements
3. Building
Halleflinta [Not visible to the naked eye]
1. Grey, buff, pink, green, brown
2. (n/a); Fine
Hornfels [Mica, quartz, andalusite, pyroxene, cordierite, garnet, feldspar]
1. Grey, brown, dark
2. Contact; Fine
Marble [Clay, quartz, garnet, olivine, goethite, hematite, epidote, graphite]
1. Grey, white, red, green, blue
2. Contact; Coarse
3. Building
Metaquartzite [Sandstone, quartz, feldspar, goethite, limonite]
2. Regional; Fine to medium
Migmatite [Feldspar, mica, augite, quartz, hornblende, apatite, magnetite, zircon, marble]
1. Green, black bands, with lighter stripes
2. Anatectic; Medium to coarse
3. Flooring, facings
Mylonite [Depends upon preexistent rocks]
1. Black, dark grey
2. Metasomatic; Tightly-packed deposits
3. Scientific
Phyllite [Chlorite, muscovite]
1. Green, grey, with silvery sheen
2. Regional; Fine to medium, minor folds
3. Rarely used in building
Rodingite [Garnet, pyroxene, chlorite, amphibole, sphene, epidote, vesuvianite]
1. Brown, red, green, rose
2. Metasomatic; Coarse
3. Scientific
Schist [Mica, feldspar, quartz, andalusite, cordierite, garnet, kyanite, staurolite]
1. Various colours
2. Regional; medium to coarse
3. Rarely used in building
Skarn [Calcite, axinite, diopside, epidote, garnet, wollastonite, chalcopyrite, galena, magnetite, pyrite, sphalerite]
1. Black, brown, grey
2. Metasomatic; Fine to coarse, banded
3. Mined for ores
Slate [Clay, shale, quartz, andalusite, cordierite, mica, graphite]
1. Black, blue, green, brown, buff
2. Regional; Fine
3. Roofing tiles, pool-table tops

Metamorphic Rocks

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