Intrusive Igneous Rocks |
Volcanic rocks |
Sedimentary Rocks |
Metamorphic rocks |
granite intruding gneiss |
pegmatite in amphibolite |
Quartz sandstone |
Reaction of HCl with limestone |
Porphyritic andesite |
Some Rocks
click on each image for a larger view and more detailed description
|
Intrusive Igneous Rocks |
Volcanic rocks |
Sedimentary Rocks |
|
Metamorphic rocks |
granite intruding gneiss |
pegmatite in amphibolite |
|
Quartz sandstone |
Reaction of HCl with limestone |
Porphyritic andesite |
For more Metamorphic Rocks
For Intrusive igneous features
Some Minerals
Quartz crystals in geode |
Quartz: w/conchoidal fracture & xyl |
Orthoclase feldspar (Kspar) |
MICAS: Biotite (l); Muscovite (r) |
Hornblende (cleavage @ 60°, 120°) |
Olivine in dunite inclusion in basalt. |
Pyrite (iron sulfide) |