olivine mineral britannica

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These yellow to brown,moderately hard minerals have a layered structure; the olivine mineral forsterite,magnesium silicate (Mg 2 SiO 4),alternates with brucite,magnesium hydroxide [Mg (OH) 2 ],and differences in the physical properties and the crystallization result from differences in results for this questionIs olivine metallic?Is olivine metallic?Olivine has a non-metallic luster,which is when a mineral has dull or non-metallic appearance,for example,the minerals quartz or garnet.Olivine has a vitreous luster,which is a glassy luster.This is why olivine is commonly used for jewelry.Physical Properties - Dylan Cordaro results for this questionWhat can olivine be found in?What can olivine be found in?Olivine is the name of a group of rock-forming minerals that are typically found in mafic and ultramafic igneous rocks such as basalt,gabbro,dunite,diabase,and peridotite .They are usually green in color and have compositions that typically range between Mg 2 SiO 4 and Fe 2 SiO 4 .Olivine A rock-forming mineral.Used as the gemstone peridot.

results for this questionWhat is olivine made of?What is olivine made of?Olivine (Peridot) Olivine (or chrysolite) is a silicate mineral made of magnesium iron silicatewith the formula (Mg,Fe)2SiO4.It ranges in colour from chartreuse green to pale olive.In its gem form,it is called peridot.Duniteis a rock of 90%+olivine.Olivine - Simple English Wikipedia,the free encyclopedia1911 Encyclopædia Britannica/Dolerite - Wikisource,the

1911 Encyclopædia Britannica/Dolerite.From Wikisource < 1911 Encyclopædia Britannica. Their essential minerals are those of basalt,viz.olivine,augite and plagioclase felspar,while hornblende,ilmenite,apatite and biotite are their commonest accessory ingredients.The chemical and microscopic features of these minerals agree 1911 Encyclopædia Britannica/Gabbro - Wikisource,the free 1911 Encyclopædia Britannica/Gabbro. we must add to these olivine-gabbro and olivine-norite in which that mineral occurs in addition to those enumerated above.Hornblende-gabbros are distinctly rare,except when the hornblende has been developed from pyroxene by pressure and shearing,but many rocks may be described as hornblende- or

1911 Encyclopædia Britannica/Monzonite - Wikisource,the

Olivine also may be present; when the rock contains this in notable quantity it may be called an olivine monzonite.Numerous large prisms of apatite often characterize micro-sections of monzonites,and zircon,iron ores and pyrites are frequent accessory minerals.1911 Encyclopædia Britannica/Olivine - Wikisource,the See also Olivine on Wikipedia; and our 1911 Encyclopædia Britannica disclaimer.OLIVINE,a rock-forming mineral composed of magnesium and ferrous orthosilicate,the formula being (Mg,Fe) 2 SiO 4.The name olivine,proposed by A.G.Werner in 1790,alludes to the ohve-green colour commonly shown by the mineral.1911 Encyclopædia Britannica/Serpentine (mineral Analyses show that the mineral contains H 4 Mg 3 Si 2 O 9,and if the water be regarded as constitutional the formula may be written Mg 2 (SiO 4) 2 H 3 (MgOH).Serpentine occurs massive,fibrous,lamellar or granular,but never crystallized.

Olivines gelatinize in even weak acids and offer little resistance to attack by weatheringOlivines are found most commonly in mafic and ultramafic igneous rocks such asA melting model for variably depleted and enriched

New experiments and a compilation of experimental liquids saturated with all of the mantle minerals (olivine,orthopyroxene,clinopyroxene,plagioclase and/or spinel) are used to calibrate a model that predicts the temperature and major element composition of a broad spectrum of primary basalt types produced under anhydrous to low H 2 Ocontent conditions at upper mantle pressures.The model can

Basalt - 1911 Encyclopedia Britannica

;in petrology,one of the oldest rock names,supposed to be derived from an Ethiopian word basal,signifying a stone which yields iron; according to Pliny,the first basalts were obtained in Ethiopia.In current usage the term includes a large variety of types of igneous rock belonging to the basicEstimated Reading Time 7 mins1911 Encyclopædia Britannica/Basalt - Wikisource,the free The secondary mineral begins to form upon the surfaces and along the cracks of the olivine,gradually producing a mesh-work in the interstices of which small kernels of olivine remain; and when the process is completed the mesh structure persists in the resulting pseudomorph,givingEstimated Reading Time 7 minsTranslation of Olivine in EnglishMore English to English translation of olivine The mineral olivine is a magnesium iron silicate with the formula (Mg +2,Fe +2) 2 SiO 4.Thus it is a type of nesosilicate or orthosilicate.It is a common mineral in the Earth's subsurface but weathers quickly on the surface.

Forsterite mineral Britannica

Gem-quality forsterite olivine is known as peridot.Because of its high melting point and resistance to chemical reagents,magnesium olivine is an important refractory material i.e.,it can be used in furnace linings and in kilns when other materials are subjected to heat and chemical processes.Gabbro - 1911 Encyclopedia Britannicain petrology,a group of plutonic basic rocks,holocrystalline and usually rather coarse-grained,consisting essentially of a basic plagioclase felspar and one or more ferromagnesian minerals (such as augite,hornblende,hypersthene and olivine).Gabbro - rocks,gabbros,felspar,olivine,minerals,occur When this substance can be resolved by the microscope it proves to consist usually of zoisite or epidote,with garnet and albite,but mixed with it are also chlorite,amphibole,serpentine,prehnite,sericite,and other minerals.The olivine in most cases is altered to green or yellow serpentine,often with bands of dark magnetite granules along its cleavages and cracks.

Images of Olivine mineral Britannica

imagesForsterite-fayalite series mineralogy BritannicaThe forsterite-fayalite minerals also occur in dolomitic limestones,marbles,and metamorphosed iron-rich sediments.These minerals are relatively infusible,not melting below 1,500 °C (2,700 °F),and are sometimes used in the manufacture of refractory brick.For detailed physical properties,see olivineLeucite - 1911 Encyclopedia Britannica1911 Encyclopedia Britannica; Leucite; a rock-forming mineral composed of potassium and aluminium metasilicate KA1(S103)2.Crystals have the form of cubic icositetrahedra { 211 },but,as first observed by Sir David Brewster in 1821,they are not optically isotropic,and are therefore pseudo-cubic.Olivine - CAMEODescriptionSynonyms and Related TermsOther PropertiesAdditional InformationAdditional ImagesSources Checked For Data in RecordAn olive green color magnesium iron silicate mineral.Olivine occurs in igneous and metamorphic rocks and has two compositional varieties Fayalite (iron rich) and forsterite (magnesium rich).Olivine beads have been found in pre-Dynastic Egyptian jewelry.The opaque stone was found in Egypt,in the lava of Vesuvius and in the Eifel district of Germany.Transparent,gem quality stones,called Peridot,come from Zabargad (St.John's Island in the Red Sea) and from Minas Gerais (Brazil),South Africa,MSee more on cameo.mfaCAS 1317-71-1Density 3.27-3.37Composition (Mg,Fe)2SiO4Mohs Hardness 6.5 - 7.0examples of major meteorite types - Kids Britannica Kids <p>(Top) The Ankober meteorite,an ordinary chondrite that fell in Ethiopia in 1942.One surface has been sawed and polished,revealing the internal structure.The light spots are nickel-iron metal; the surrounding gray matrix is composed of silicate minerals.</p><p>(Second from top) A piece of the Allende meteorite,a carbonaceous chondrite,which fell as a shower of numerous fragments in

Olivine Courses - XpCourse

The mineral olivine (/ l v i n /) is a magnesium iron silicate with the formula (Mg 2+,Fe 2+) 2 Si O 4.Thus,it is a type of nesosilicate or orthosilicate.The primary component of the Earth's upper mantle,it is a common mineral in Earth's subsurface,but weathers quickly on the surface.Olivine Crystal Structure - Carleton CollegeAug 07,2019·This exercise is based on recent crystallographic research on the olivine crystal structure published by Redfern et al.(2000).The authors of this study synthesized Fa50 olivine olivine (MgFeSiO4) in an experimental apparatus at temperatures ranging from 100 to 1250 °C,quenched the experiments,and used in situ neutron powder diffraction techniques to investigate changes in theOlivine Definition of Olivine by Merriam-WebsterDefinition of olivine a usually greenish mineral that is a complex silicate of magnesium and iron used especially in refractories compare peridot Other Words from olivine Example Sentences Learn

People also askWhat is mineral group does olivine belong to?What is mineral group does olivine belong to?Olivine,any member of a group of common magnesium,iron silicate minerals.Olivines are an important rock-forming mineral group.olivine mineral BritannicaRelated searches for olivine mineral britannica

olivine mineral factsuses of olivine mineralolivine mineral propertiesolivine gemstoneolivine rocks for saleolivine crystals for salewhat is olivine used forSome results are removed in response to a notice of local law requirement.For more information,please see here.12345NextSee results only from britannicaTephroite mineral BritannicaTephroite,olivine mineral found only in iron-manganese ore deposits and skarns and in metamorphosed manganese-rich sediments,such as those of Cornwall,Eng.,and Franklin,N.J.,in the United States.

Serpentine (Mineral) - 1911 Encyclopedia Britannica

Analyses show that the mineral contains H 4 Mg 3 Si 2 0 9j and if the water be regarded as constitutional the formula may be written Mg 2 (SiO 4) 2 H 3 (MgOH).Serpentine occurs massive,fibrous,lamellar or granular,but never crystallized.Serpentine - rocks,mineral,moscow,structure,olivine > Encyclopedia-britannica-volume-20-sarsaparilla-sorcery >> Sennar to Sewage Disposal >> Serpentine Serpentine rocks,mineral,moscow,structure,olivine and iron SERPENTINE,in mineralogy the name for a group of min erals of the composition probably crystallizing in the rhombic system.According to the habit and optical proper ties of mineral properties of limestone breakage - MWRMineral Hardness Britannica.Mineral - Mineral - Hardness Hardness (H) is the resistance of a mineral to scratching.It is a property by which minerals may be described relative to a standard scale of 10 minerals known as the Mohs scale of hardness. Olivine Physical Properties.Olivine is typically inexperienced in color however also can

olivine - definition,etymology and usage,examples and

n olivine a mineral consisting of magnesium iron silicate; a source of magnesium Webster's Revised Unabridged Dictionary n Olivine (Min) A common name of the yellowish green mineral chrysolite,esp.the variety found in eruptive rocks.olivine mine wikipiediaOlivine mineral Britannica.Olivine,any member of a group of common magnesium,iron silicate minerals..General considerations.Olivines are an important rock-forming mineral group.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 olivine mineral BritannicaOlivines are an important rock-forming mineral group.Magnesium-rich olivines are abundant in low-silica mafic and ultramafic igneous rocks and are believed to be the most abundant constituent of the Earths upper mantle.Olivine also occurs in high-temperature metamorphic rocks,lunar basalts,and some meteorites.

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