Metallurgical & Materials Engineering
Metallurgical
& Materials
Engineering
Economic Geology
Economic
Geology
Granite is a light-colored plutonic rock found throughout the continental crust, most commonly in mountainous areas. It consists of coarse grains of quartz (10-50%), potassium feldspar, and sodium feldspar
Feldspar is the name applied to a group of minerals that is the second most common of all the minerals. All feldspars are composed of aluminum, silicon, and oxygen combined with varying amounts of one or more metals, particularly potassium, sodium, and calcium.
Magnetite is a mineral whose primary component is an iron oxide that contains equal amounts of iron(II) and iron(III). Its empirical formula is Fe3O4, and it is often expressed as iron(II,III) oxide.
Azurite is a soft, deep-blue copper mineral produced by weathering of copper ore deposits. During the early 19th century, it was also known as chessylite, after the type locality at Chessy-les-Mines near Lyon, France.
Amazonite is said to have a soothing effect on the nervous system. Since the nervous system controls our emotions a great deal, this stone is said to soothe tense and aggravated situations and to enhance love.
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Sandstone. Sedimentary rock.
Quartz is our most common mineral. Quartz is made of the two most abundant chemical elements on Earth: oxygen and silicon. Atoms of oxygen and silicon join together as tetrahedrons (three sided pyramids).
Amazonite is said to have a soothing effect on the nervous system. Since the nervous system controls our emotions a great deal, this stone is said to soothe tense and aggravated situations and to enhance love.