Diabase Photos
Cochise College
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Roger Weller, geology instructor
Diabase Photos
Diabase Photos
last edited: 11/15/07
number of photos: 6
A diabase has a basaltic composition;
it consists mostly of pyroxene and
plagioclase feldspar.
The plagioclase forms fairly well-shaped visible crystals
that are embedded in a
thick, dark mass of pyroxene.
photos
diabase:
1
2
3
4
diabase porphyry:
1
2
Photos are copyright free for
non-commercial educational uses.
Just credit photos to R.Weller/Cochise
College.
copyright 2007-R.Weller