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Plagioclase feldspar is used most commonly in ceramics, glass, enamel, soap, false teeth, and scouring powders. Another form of feldspar, potassium feldspar, has very similar uses.
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∙ 15y ago
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Is plagioclase a mineral?
Yes. I even have a specimen of it.
What is plagioclase feldspar with quartz and olivine?
Diorite
How can someone identify quartz in an igneous rock from plagioclase?
quartz will have conchidal fracture...plagioclase will have 2 sets of cleavage near 90 degrees and some striations quartz will have conchidal fracture...plagioclase will have 2 sets of cleavage near 90 degrees and some striations
What happens to plagioclase feldspar when it is weathered?
It forms clay minerals.
What is a sodium an calcium feldspar with twinning striations called?
Plagioclase.
What minerals are used to make porcelain?
Plagioclase
Would quartz or plagioclase be more likely to form well-shaped crystal in an igneous rock?
Plagioclase.
Is plagioclase composed of a single element?
No. The chemical formula of Plagioclase feldspar is (Na,Ca)(Si,Al)4O8
What minerals are in bojite?
Plagioclase and Hornblende
Which is the dominant feldspar in basalt?
Plagioclase
What type of rock is a plagioclase?
Plagioclase is not actually a rock, but a member of the feldspar family of minerals, and a major rock forming silicate mineral.
Is plagioclase a mineral?
Yes. I even have a specimen of it.
What is plagioclase feldspar with quartz and olivine?
Diorite
What is the plagioclase system?
CaAl2Si2O8 (An)- NaAlSi3O8 (Ab)
How can someone identify quartz in an igneous rock from plagioclase?
quartz will have conchidal fracture...plagioclase will have 2 sets of cleavage near 90 degrees and some striations quartz will have conchidal fracture...plagioclase will have 2 sets of cleavage near 90 degrees and some striations
What is pumice composition?
quartz, plagioclase and alkali feldspars
Would quartz or plagioclase be more likely to form a well shaped crystal in an igneous rock?
A well-shaped crystal in an igneous rock needs room and time to grow. So, minerals with high melting points form well shaped crystals while ones with lower melting points don't because there isn't as much time for them to form. Quartz crystallizes at a lower temperature than plagioclase so plagioclase is more likely to form well-shaped crystals.
