Physics - Assignment Point

Physics

Clinohumite

Clinohumite Definition Clinohumite is a monoclinic-prismatic mineral containing fluorine, hydrogen, iron, magnesium, oxygen, and silicon. It is an uncommon member of the humite group, a magnesium silicate according to the chemical formula (Mg,Fe)9(SiO4)4(F,OH)2. The formula can be thought of as f.....

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Jerrygibbsite

Jerrygibbsite Definition Jerrygibbsite is a rare silicate mineral with chemical formula: (Mn,Zn)9(SiO4)4(OH)2. It is member of the leucophoenite family of the humite group. It is always found with these two minerals. It is a dimorph of sonolite.Light to medium pinkish violet massive mineral with .....

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Chondrodite

Chondrodite Definition Chondrodite is one of the rarest and most beautiful of gemstones and it is occasionally faceted for collectors. It is a nesosilicate mineral with formula (Mg,Fe)5(SiO4)2(F,OH,O)2. It is the most prevalent and well-known member of the humite group. It is named for the Greek .....

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Staurolite

Staurolite Definition Staurolite is a brownish to black orthorhombic mineral, often having crossed intergrown crystals and found in mica schists and gneisses. Its chemical formula: (FeMg)2Al9Si4O23(OH). Magnesium, zinc and manganese substitute in the iron site and trivalent iron can substitute fo.....

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Topaz

Topaz Definition Topaz is a colorless, blue, yellow, brown, or pink orthorhombic mineral valued as a gem. Topaz occurs as transparent or translucent prisms in silica-rich igneous rocks, such as pegmatite, and in tin-bearing rock veins. Its chemical formula: Al2SiO4(F,OH)2. Topaz is a well-known g.....

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Sillimanite

Sillimanite Definition Sillimanite is a usually white, pale-green or brown orthorhombic mineral occurring as long, slender, fibrous crystals in metamorphic rocks. It is a polymorph of andalusite and kyanite, but can form at higher temperatures than either of these. Its chemical formula: Al2SiO5. .....

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Kyanite

Kyanite Definition Kyanite is a bluish-green to colorless triclinic mineral. Its chemical formula: Al2SiO5. It occurs as long, thin, blade-shaped crystals in metamorphic rocks. It is unique among minerals in having two grades of hardness, one along its length, and one along its width. It is a pol.....

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Andalusite

Andalusite Definition Andalusite is a hard, grayish white to pinkish brown orthorhombic mineral. It occurs as nearly square prisms, often with cross-shaped cross sections, in metamorphic rocks. It is a polymorph of kyanite and sillimanite, but forms at shallower depths than they do, and at higher.....

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Thorite

Thorite Definition Thorite is a yellow, brownish, or black radioactive mineral consisting of tetragonal thorium silicate. It occurs in coarse granite and is a source of thorium. It is the most common mineral of thorium and is nearly always strongly radioactive. It was named in 1829 to reflect its.....

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Zircon

Zircon Definition Zircon is a brown, reddish to bluish, gray, green, or colorless tetragonal mineral that occurs in igneous, metamorphic, and sedimentary rocks, and especially in sand. The colorless varieties are valued as gems. Its chemical formula: ZrSiO4. It is a natural gemstone. It is highly.....

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Grossular

Grossular Definition Grossular is the calcium aluminum garnet and forms in contact or regional metamorphic environments as does andradite the calcium iron garnet. It is believed that these garnets form from the metamorphism of impure siliceous limestones. The name grossular is derived from the bo.....

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Almandine

Almandine Definition Almandine is a deep violet-red garnet that consists of iron aluminium silicate and is used as a gemstone. It is known as a Stone of Tangible Truth. It assists in manifesting a realistic version of the physical world. Its energy helps alleviate worry, panic and fear, and assis.....

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