Metamorphic Rocks
Metamorphic rocks are sedimentary or igneous rocks that have been transformed by pressure, heat, or the intrusion of fluids. The heat may come from nearby magma or hot water intruding via hot springs. It can also come from subduction, when tectonic forces draw rocks deep beneath the Earth’s surface.
Granulite
Granulites are a type of high-grade metamorphic rock that forms under conditions of high temperature and pressure. They are characterized by the presence of...
Unakite
Unakite is a type of metamorphic rock that is primarily composed of pink orthoclase feldspar, green epidote, and clear to bluish-gray quartz. It is...
Nuummite
Nuummite is a rare and unique metamorphic rock that is prized for its distinctive iridescent play of colors. It is primarily composed of two...
Pinolith
Pinolith is a unique and visually striking metamorphic rock that is primarily composed of two distinct minerals: white magnesite and black graphite. It is...
Soapstone
Soapstone is a type of talc-schist metamorphic rock. Also other naming’s are steatite or soaprock. The composed primarily of talc, with varying amount of...
Skarn
Skarn is coarse-grained metamorphic rocks that forms by a metasomatism. Also called tactites. Skarn tend to be rich in calcium-magnesium-iron-manganese-aluminium silicate minerals that also...
Phyllite
Phyllite is a foliated metamorphic rock that has been low pressure and heat. Phyllite formation from slate that is further metamorphosed so that very fine grained mica mineral achives. It composed of mainly flake-shaped mica minerals. This mica minerals is strong parallel alignment, so easly to split into sheets or slabs. Also alignment of mica grains gives a reflective sheen on phyllite. Generally Phyllite is gray, black or greenish color and frequently weathers out of a tan or brown.
Marble
A granular metamorphic rock, marble is derived from limestone or dolomite. It consists of a mass of interlocking grains of calcite or the mineral dolomite. Marbles form when limestone buried deep in the older layers of Earth’s crust is subjected to heat and pressure from thick layers of overlying sediments.
Slate
Slate is a fine-grained, foliated metamorphic rock this is created via the alteration of shale or mudstone by means of low-grade local metamorphism. It is famous for a extensive form of makes use of such as roofing, floors, and flagging due to its sturdiness and appealing look.
Schist
Schist is medium grade metamorphic rock, formed by means of the metamorphosis of mudstone / shale, or some forms of igneous rock, to a higher diploma than slate, i.E. It has been subjected to better temperatures and pressures.
Quartzite
Quartzite is a nonfoliated metamorphic rock composed almost absolutely of quartz. It paperwork while a quartz-rich sandstone is altered via the warmth, pressure, and chemical interest of metamorphism. These situations recrystallize the sand grains and the silica cement that binds them collectively. The result is a network of interlocking quartz grains of incredible power.
Hornfels
Hornfels is a fine-grained metamorphic rock These properties are because of first-class grained non-aligned crystals with platy or prismatic behavior. Hornfels is the group designation for a series of contact metamorphic rocks which have been baked and indurated by means of the warmth of intrusive igneous loads and had been rendered massive, difficult, splintery, and in a few cases exceedingly tough and sturdy.
