Where does the name albite come from in rocks?

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Graciela Medhurst asked a question: Where does the name albite come from in rocks?
Asked By: Graciela Medhurst
Date created: Fri, Jun 18, 2021 8:09 AM
Date updated: Sat, Jul 2, 2022 4:14 PM

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Top best answers to the question «Where does the name albite come from in rocks»

  • It is the sodium endmember of the plagioclase solid solution series. It represents a plagioclase with less than 10% anorthite content. The pure albite endmember has the formula Na Al Si 3 O 8. It is a tectosilicate. Its color is usually pure white, hence its name from Latin albus. It is a common constituent in felsic rocks.

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Albite is a plagioclase feldspar mineral.It is the sodium endmember of the plagioclase solid solution series. It represents a plagioclase with less than 10% anorthite content. The pure albite endmember has the formula Na Al Si 3 O 8.It is a tectosilicate.Its color is usually pure white, hence its name from Latin, albus. It is a common constituent in felsic rocks.

Albite, common feldspar mineral, a sodium aluminosilicate (NaAlSi 3 O 8) that occurs most widely in pegmatites and felsic igneous rocks such as granites. It may also be found in low-grade metamorphic rocks and as authigenic albite in certain sedimentary varieties.

Albite belongs to the Plagioclase Feldspar group, an isomorphous solid solution series.Albite is one end member, containing sodium and no calcium. The other end member, Anorthite, contains calcium and no sodium.The intermediary members are Oligoclase, Andesine, Labradorite, and Bytownite.Oligoclase and Andesine are considered by some to be a variety of Albite rather then a separate mineral.

Albite Crystallography. a = 8.144, b = 12.787, c = 7.16, Z = 4; alpha = 94.266°, beta = 116.583°, gamma = 87.667° V = 664.40 Den (Calc)= 2.63. Warning: this large pop-up is very compute intensive and may not work well with some computers.

Albite definition, the sodium end member of the plagioclase feldspar group, light-colored and found in alkalic igneous rocks. See more.

Albite is named from the Latin albus, in reference to its unusually pure white color. It is a relatively common and important rock-making mineral associated with the more acid rock types and in pegmatite dikes, often as the variety Cleavelandite with rarer minerals like tourmaline and beryl. Intermediate members

Albite veins are monomineralic (GR 03, 20d, GROA 50) or occur in association with quartz (GROA 49). Albite is coarse grained (up to 1 cm) and well crystallized, without preferential orientation. The veins are not parallel to the dominant rock foliation S 1.

What is Plagioclase? "Plagioclase" is the name of a group of feldspar minerals that form a solid solution series ranging from pure albite, Na(AlSi 3 O 8), to pure anorthite, Ca(Al 2 Si 2 O 8).Minerals in this series are a homogenous mixture of albite and anorthite. The names of the minerals in the series are arbitrarily given based upon their relative abundance of albite and anorthite.

Jadeite is formed in metamorphic rocks under high pressure and relatively low temperature conditions. Albite (NaAlSi 3 O 8) is a common mineral of the Earth's crust, and it has a specific gravity of about 2.6, much less than that of jadeite. With increasing pressure, albite breaks down to form the high-pressure assemblage of jadeite plus quartz.

Greenschist, as a rock type, is defined by the presence of the minerals chlorite and actinolite and may contain albite or epidote. Greenschist often has a lepidoblastic, nematoblastic or schistose texture defined primarily by chlorite and actinolite.

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