An olivine sample was examined for its sintering properties. Scientists use these properties to classify minerals like olivine. Hardness:6.5 ~ 7. It is an isotropic mineral with an index of refraction n = 1.768. Magnesium-rich olivines are abundant in low-silica mafic and ultramafic igneous rocks and are believed to be the most abundant constituent of the Earth’s upper mantle. The common Mg-dominant member of the group was renamed forsterite by Serve-Dieu Abailard "Armand" Lévy in 1824. Peridot Mineral Information Page at mineralminers.com: your on-line link for accurate scientific & mineralogical facts about natural peridot, with worldwide peridot mining locations, the physical properties of peridot and peridot uses, as well as peridot occurance information and peridot historical background info. Olivine is a solid solution series mineral whose two most common end members are forsterite (Mg) and fayalite (Fe). • The olivine exhibited a sintering point of 1478 °C, indicating the probable refractoriness. The physical properties of ringwoodite are affected by pressure and temperature. Origin of name: Uncertain. • The detailed mineralogical and microstructural investigations were also carried out. Wallerius's chrysolite was renamed olivine in 1789 by Abraham Gottlob Werner for the usual olive green color of this mineral (N.B. Luster: Vitreous, Glassy. (or olivine) Mineral Group: Silicates- Olivine group. Here are some physical properties of peridot. Olivines are an important rock-forming mineral group. This page concerns itself with olivine in general. • The sintered specimens were characterized by physical and mechanical specifications. • Chemical Formula: (Mg, Fe)2SiO4 *mostly Mg2Sio4. These properties are caused by the Internal Arrangement of Atoms in a mineral. chrysolite has a similar etymology.) Olivine, any member of a group of common magnesium, iron silicate minerals.. General considerations. Crystal System: Orthorhombic. Density: 3.2~3.45. The six physical properties used to identify minerals are color, streak, hardness, luster, cleavage, and specific gravity. Electrochemical Properties of Olivine-Type LiFePO4/C Cathode Material for Lithium Ion Batteries Tong Zhang, Zi Yang, Li Wang, Xing Zhao, ... of the electrode reactions and providing a deeper understanding of the underlying physical and chemical processes. Friedrich Walchner in 1823 gave it the name "hyalosiderite". If you need end member-specific information, please see the forsterite and fayalite pages. Rock types it occurs in: Igneous rock, common in mafic and ultra mafic rocks . Color: Olive Green. Goup species … General Olivine Information : Chemical Formula: (Mg,Fe)2SiO4 : Composition: Molecular Weight = 153.31 gm Magnesium 25.37 % Mg 42.06 % MgO Iron 14.57 % Fe 18.75 % FeO Silicon 18.32 % Si 39.19 % SiO 2 Oxygen 41.74 % O _____ _____ 100.00 % 100.00 % = TOTAL OXIDE: Empirical Formula: Mg 1.6 Fe 2+ 0.4 (SiO 4) Environment: Basic and ultra basic igneous rocks. The calculated density value of ringwoodite is 3.90 g/cm 3 for pure Mg 2 SiO 4; 4.13 g/cm 3 for (Mg 0.91,Fe 0.09) 2 SiO 4 of pyrolitic mantle; and 4.85 g/cm 3 for Fe 2 SiO 4.