intermediate to mafic igneous rocks
DESCRIPTION
Plagioclase Feldspar. USGS. by-nc: smiling_da_vinci. by-nc-sa: Ron Schott. by-nc-nd: Orbital Joe. intermediate to mafic igneous rocks. pegmatites. metamorphic rocks. Over half the Earth’s crust is composed of a single group of minerals known as the feldspars. public domain. - PowerPoint PPT PresentationTRANSCRIPT
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intermediate to mafic
igneous rocks
Plagioclase Feldspar
US
GS
pegmatites
by-nc-sa: Ron S
chott by-n
c: s
mili
ng_d
a_vi
nci
metamorphic rocks
by-nc-nd: Orbital Joe
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NA
SA
Over half the Earth’s crust is composed of a single group of minerals known as the feldspars.
public domain
This piece of plagioclase feldspar was retrieved from the moon by the Apollo 16 mission. It is 4.5 billion years old.
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Plagioclase is in igneous and metamorphic building stones.
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Feldspars are processed to create a wide variety of ceramics, ranging from pottery to industrial uses
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Ground into powder, plagioclases are also used in the manufacture of paints, rubber, plastics.
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Feldspars are used in the manufacture of glass and scouring powder.
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Feldspars are in tarred roofing materials, as well as in glass wool insulation materials.
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Feldspars are used as sizing or filler in textiles and paper.
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Feldspars are used in the manufacture of enamel.
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As feldspar minerals weather into smaller pieces, they form sand, clay, and mud. Once those sediments harden, they become sandstones and shales.
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Water will react with feldspars to produce a host of clay minerals.
In dry climates mud is used to form the walls of houses
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Feldspars weather to clays that are used to
make ceramics.
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Feldspar minerals are
also important in glazes
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As feldspars breakdown under the intense weathering conditions of tropical climates, almost all of the feldspar is dissolved away except for some hydrous aluminum oxide minerals that are left behind. These concentrated deposits of aluminum ores are collectively called bauxite and are our major source of aluminum.
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As feldspars weather they produce
aluminum ores
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Feldspars are often in concrete and asphalt as aggregate.
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intermediate to mafic
igneous rocks
Plagioclase Feldspar
US
GS
pegmatites
by-nc-sa: Ron S
chott by-n
c: s
mili
ng_d
a_vi
nci
metamorphic rocks
by-nc-nd: Orbital Joe