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There are broadly three main types of feldspars: calcium, sodium and potassium. They have the following general chemical formulas:
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8
The endmember mineral states are known as K-Feldspar, Albite and Anorthite which are the potassium, sodium and calcium feldspars respectively.
There can be a mix of calcium and sodium (more correctly termed solid solutions) in Feldspars between Albite and Anorthite which are known generally as Plagioclase feldspars.
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Is feldspar a rock or mineral?
Feldspar is the name of a group of rock-forming minerals which make up as much as 60% of the Earth's crust. Feldspars crystallize from magma in both intrusive and extrusive rocks, and they can also occur as compact minerals, as veins, and are also present in many types of
Is feldspar a compound or mixture?
Feldspar is a mixture.
Which is the most abundant feldspar mica quartz calcite?
Feldspar is the most abundant mineral in the earth crust.
Which object can scratch apatite but not feldspar?
Glass can scratch apatite but not feldspar.
Which object can scratch feldspar but not quartz?
steel file 6.5
Who discovered the Feldspar Rocks?
The person who first found feldspar rocks is unknown, however, these types of rocks are commonly found in the Earth's crust and along road cuts of Ontario. Feldspar is commonly found in granite.
Is feldspar a rock or mineral?
Feldspar is the name of a group of rock-forming minerals which make up as much as 60% of the Earth's crust. Feldspars crystallize from magma in both intrusive and extrusive rocks, and they can also occur as compact minerals, as veins, and are also present in many types of
Is feldspar metalic?
no, feldspar is a mineral.
Is feldspar a metal?
no, feldspar is a mineral.
What is the hardness of feldspar?
Feldspars generally have a hardness of 6 on Mohs' hardness scale.
Is feldspar a compound or mixture?
Feldspar is a mixture.
What is the fracture of feldspar?
Feldspar's fracture is brittle
What feldspar fracture?
The fracture of feldspar is conchoidal or brittle.
What is feldspar fracture?
The fracture of feldspar is conchoidal or brittle.
Step like cleavage is a property of what mineral?
feldspar
What minerals is a silicate Gematite Feldspar Calcite Halite?
Feldspar
What is the feldspar?
Feldspar is a mineral found prety mutch anywhere.
