PowerPoint Presentationgeowords.com/e125/topics/02a-ge125-ignrks.pdfdiamond in kimberlite . pahoehoe...
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Transcript of PowerPoint Presentationgeowords.com/e125/topics/02a-ge125-ignrks.pdfdiamond in kimberlite . pahoehoe...
peridotite xenolith in basalt
Olivine
Pyroxene
Ca-rich Plagioclase
Ostwald ripening
quartz
orthoclase crystal
orthoclase cleavage fragment
muscovite
biotite
Amphibole
pyroxene
FELSIC INTERMEDIATE MAFIC ULTRAMAFIC
Rhyolite Andesite Basalt Komatiite
Granite Diorite Gabbro Peridotite
QUARTZ
K-FELDSPAR
Na-rich
PLAGIOCLASE
Ca-rich
AMPHIBOLE
PYROXENE
OLIVINE
100
80
60
40
20
0
% of Vol.
Si up to 77% of total Si down to 48% of total
VOLCANIC PLUTONIC
porphyritic granite
diorite
gabbro
peridotite
diamond in kimberlite
pahoehoe basalt lava flow
basaltic lava fountain
Rhyolite
obsidian
pumice
andesite (plagioclase phenocrysts)
basalt
scoria
komatiite
Granite quarry in New Hampshire
Granites
Granite colors