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Fractional crystallization (geology) - Wikipedia

During the process of fractional crystallization, melts become enriched in incompatible elements. Hence, knowledge of the crystallization sequence is critical in understanding how melt compositions evolve. Textures of rocks provide insights, as documented in the early 1900s by Bowen's reaction series.

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What is olivine used for - answers

Some very good olivine samples can be used as a gemstone (they are called peridot, then, after the french word for olivine). Olivine also reacts with CO2, and because of this, it can be used to ...

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Olivine: A rock-forming mineral. Used as the gemstone peridot.

Wisconsin Geological & Natural History Survey » Olivine

— Olivine is an accessory mineral in the pegmatitic nepheline syenite exposed in cuts along County Highway U, 0.5 miles east of the little Rib River in the SW SW Sec. 18 T.29N R.7E (Myers et al., 1984). — Olivine is an accessory minerals in quartz syenite exposed at the old Technical Institute in Wausau (NE NE Sec. 35 T.29N R.7E).

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Peridotite - Igneous Rocks

The main minerals are diopside (green), pyrope (purple) and olivine (yellowish green). Åheim, Norway. Width of sample 16 cm. It is the source rock of basalt. Basaltic magma forms when peridotite is partially melted. Basalt and peridotite differ in composition because rocks are mixtures of minerals, but each mineral has its own melting temperature.

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How is the mineral olivine formed? | AnswersDrive

Olivine is a common rock-forming mineral in mafic and ultramafic igneous rocks, but it also occurs in impure metamorphosed carbonate rocks (picture below). It is a very common mineral in the mantle. Some xenoliths from the mantle are almost entirely composed of this mineral.

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Olivine - Rock-Forming Minerals

Olivine is a very common silicate mineral that occurs mostly in dark-colored igneous rocks like peridotite and basalt. It is usually easily identifiable because of its bright green color and glassy luster. Olivine sand grains from Hawaii. Olivine is actually very rare in sand because it is highly susceptible to weathering. There is little hope ...

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Olivine - Simple English Wikipedia, the free encyclopedia

Olivine. Olivine (or chrysolite) is a silicate mineral made of magnesium iron silicate with the formula (Mg,Fe)2SiO4. It ranges in colour from chartreuse green to pale olive. In its gem form, it is called peridot . Dunite is a rock of 90%+ olivine. Dunite and other peridotite rocks are major constituents of the Earth's mantle above a depth...

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Olivine Sand - bariteworld

Olivine's high fusion point and basic reaction chemistry also makes it a natural for the casting of basic alloys. Olivine sand is mined, processed and sized with rigid adherence to quality assurance programs. Consistent grain fineness and chemistries help guarantee the repeatable results necessary to achieve optimal mold and core performance.

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Olivine - Wikipedia

Olivine-rich intrusion; processed to 4691′ | Hawai'i ...

Olivine-rich intrusion; processed to 4691′ Posted on 11/08/2015 11/08/2015 by Eric Haskins. The top contact of another extremely olivine-rich intrusion forms a wave shape and displays a dark, glassy rind around its edges. Drilling continues to proceed pretty smoothly, we processed another ~70′ today.

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Geol final Flashcards | Quizlet

Which process, common near black smokers, will use hot water circulating through the crust to alter olivine and pyroxene into chlorite and serpentine? True Graphite and diamonds are polymorphs because both are made up of carbon atoms.

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how is olivine mined - BINQ Mining

How is olivine mined – The Q&A wiki. its mined by getting hot water putting it on the land where u want to mine then you try to get most of the dirt and stuff off of .

process of olivine mining - africar-hire

PASEK MINERALES has been mining Dunite since 1972 in Spain. This mineral is processed silicates (like olivine) are being used in this process. There is a

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Olivine: The mineral Olivine, peridot information and pictures

Olivine is not scientifically classified by the IMA as an individual mineral species, but is rather recognized as a mineral group with the Forsterite and Fayalite end members. Fayalite and Forsterite create a solid solution series, and most specimens identified as Olivine fall somewhere in between this series, almost always leaning more towards Forsterite with a greater content of magnesium.

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Olivine | Definition of Olivine by Merriam-Webster

Olivine definition is - a usually greenish mineral that is a complex silicate of magnesium and iron used especially in refractories. a usually greenish mineral that is a complex silicate of magnesium and iron used especially in refractories.

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Olivine | mineral | Britannica

Olivine, any member of a group of common magnesium, iron silicate minerals. 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 upper mantle.

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Peridot Value, Price, and Jewelry Information ...

Peridotite, an igneous rock made primarily of olivine and pyroxene, makes up most of the upper mantle. Fayalite. Brown olivine gems, rich in iron, can be very beautiful, especially when the color runs more golden than brown. Although very rarely found in nature, fayalite commonly occurs in iron slag produced by metallurgical processing.

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Olivine Flashcards | Quizlet

What is a distinguishing feature of olivine mineral. olive green color. What is the luster, hardness, cleavage, streak and distinguishing property of Olivine? Glassy luster. Hardness of 6.5-7. No cleavage. White streak. Olive green color.

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August Birthstone -

Cleaning peridot is a delicate process. Never use a steam or ultrasonic cleaner, as your peridot birthstone is vulnerable to thermal shock. It is safest to use a s0ft-bristle brush with a mild dish soap in warm water.

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Chapter 5 Igneous Rocks Flashcards | Quizlet

Explain how Olivine can be present in igneous rocks when it is supposedly converted to pyroxene during the cooling process. Certain conditions cause newly formed crystals to be separated from the cooling magma and the chemical reactions between magma and minerals stop - .

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