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The composition of chondrite meteorites resembles the ultramafic rock peridotite,
but peridotite lacks the chondritic texture and iron-nickel content of the meteorites
. One kind of chondrite is composed mostly of serpentine or pyroxene and ...
It must have a definite chemical composition. There are other meanings for the ...
The fourth criterion, definite chemical composition, is to be expected because of
the inherent orderliness of crystalline substances. Essentially, this means that ...
Increasing silica 45% Si02 FELSIC INTERMEDIATE MAFIC oxides; si in felsic is
for silica). Rhyolite, the most abundant volcanic rock with a felsic composition, is
light in color because of the low iron and magnesium content. Felsic magmas are
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Introduction to Physical Geology
Terms to Remember 382
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