Translate:
English
Chinese (S)
Chinese (T)
Croatian
Dutch
French
German
Hebrew
Italian
Japanese
Korean
Portuguese
Russian
Serbian
Spanish
Swedish
Turkish
Additional
norite
English Wikipedia - The Free Encyclopedia
Download this dictionary
Norite
Norite
, also known as
orthopyroxene
gabbro
, is a
mafic
intrusive
igneous rock
composed largely of the
calcium
-rich
plagioclase
labradorite
, orthopyroxene, and
olivine
. Norite may be essentially indistinguishable from gabbro without
thin section
study under the
petrographic microscope
. The principal difference between norite and gabbro, however, is the type of
pyroxene
of which it is composed; norite is predominately composed of orthopyroxenes, largely high magnesian
enstatite
or an iron bearing intermediate
hypersthene
, whereas the principal pyroxenes in gabbro are
clinopyroxenes
, generally medially iron-rich
augites
.
See more at Wikipedia.org...
© This article uses material from
Wikipedia
®
and is licensed under the
GNU Free Documentation License
and under the
Creative Commons Attribution-ShareAlike License