-
Peraluminous rocks are
igneous rocks that have a
molecular proportion of
aluminium oxide higher than the
combination of
sodium oxide, pot****ium
oxide and...
- be
taken up in
feldspars (Al2O3 > CaO + K2O + Na2O) are
described as
peraluminous, and they
contain aluminum-rich
minerals such as muscovite. The average...
-
alteration of topaz, feldspar, kyanite, etc. It is
characteristic of
peraluminous rock, in
which the
content of
aluminum is
relatively high. In pegmatites...
- The
mineral enrichment is a
result of
fluids expelled from
peraluminous magmas.
Peraluminous magmas in turn
results from the
partial melting (anatexis)...
- 003Ga from U-Pb and Th-Pb mo****te dating. The
leucogranite itself is
peraluminous S-type
granite mainly containing plagioclase (albite to
oligoclase composition)...
- (92-85 Ma)
makes up the
western edge of the
Atlanta pluton. The
Atlanta peraluminous suite (83-67 Ma)
makes up the
majority of the
Atlanta lobe that stretches...
-
rubidium and thorium. Similarly, tin-****ociated
granitoids tend to be
peraluminous. From the age of ****ociated
grantioids it is
inferred that the mineralization...
-
plagioclase relative to
mafic minerals.
Agpaitic rock
Metaluminous rock
Peraluminous rock Philpotts,
Anthony R.; Ague, Jay J. (2009).
Principles of igneous...
- K2O/Na2O >3.
Peralkaline –
rocks containing molar (K2O + Na2O)/Al2O3 >1.
Peraluminous –
rocks containing molar (K2O + Na2O + CaO)/Al2O3 <1. In
older terminology...
-
peralkaline with high
proportions of
alkali elements relative to aluminum, or
peraluminous with a
higher concentration of
aluminum relative to
alkali (predominantly...
