Lawsonite
Lawsonite Definition Lawsonite is an uncommon mineral that occurs at high pressures and low temperatures in regionally metamorphosed, low-grade, glaucophane-bearing schists. It can also form…
Physics
Hemimorphite
Hemimorphite Definition Hemimorphite is a white mineral consisting of hydrated zinc silicate in orthorhombic crystalline form: a common ore of zinc. It is also called…
Mullite
Mullite Definition Mullite is a colourless mineral consisting of aluminium silicate in orthorhombic crystalline form: used as a refractory. It can form two stoichiometric forms…
Phlogopite
Phlogopite Definition Phlogopite is a yellow to dark-brown mica. Phlogopite is monoclinic and is usually found in limestone. It is used in insulation. It is…
About Mica
About Mica Definition Mica: It is any of a group of hydrous aluminosilicate minerals with the general formula (K,Na,Ca)(Mg,Fe,Li,Al)2-3(Al,Si)4O10(OH,F)2 that can be split easily into…
Muscovite
Muscovite Defintion Muscovite is a usually colorless to yellow or pale-gray mica. Muscovite is a monoclinic mineral and is found in igneous rocks, such as…
Biotite
Biotite Definition Biotite is a dark-brown or dark-green to black mica. Biotite is monoclinic and is found in igneous, metamorphic, and sedimentary rocks. It was…
Chamosite
Chamosite Definition Chamosite is a monoclinic-prismatic mineral containing aluminum, hydrogen, iron, magnesium, oxygen, and silicon. It is a member of the Chlorite, and it forms…
Chlorite Group
Chlorite Group Definition Chlorite group is a group of mostly monoclinic (also triclinic or orthorhombic) micaceous phyllosilicate minerals with a structure consisting of T-O-T layers…
Nickel
Nickel Definition Nickel is a silvery, hard, ductile metallic element that occurs in ores along with iron or magnesium. It occurs sparingly in nature in…
Chromite
Chromite Definition Chromite is a brownish-black mineral consisting of a ferrous chromic oxide in cubic crystalline form, occurring principally in basic igneous rocks: the only…
Lava Tube
Lava Tube Definition Lava tubes are the longest and most complicated of volcanic caves. They are the channels of rivers of lava that at some…
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