***STUDY TIP***

Make sure you start your review at the very first entry all the way at the bottom. The first entry is called 'Mineral Review'. From there, study each post from the top working your way upwards in the posts. Good luck! :D 

Metamorphic--QUIZ YOURSELF!

Metamorphic Review

Amphibolite

Dark colored

Heavy

Weakly foliated

Shiny flakes of black and white

Salt and pepper

Gneiss

Coarse-grained

Compositional banding

Marble

Non-foliated

Reacts with HCl

Phyllite

Platy minerals

Looks like slate with a shinier luster

Quartzite

Non-foliated

Black/dark in color

Tiny mica visible

 

Schist

Medium-coarse grained

Strongly foliated

Individual mica visible

Slate

Fine grained

Foliated

Slaty cleavage

Igneous--QUIZ YOURSELF!

Igneous Review

Andesite

Texture: aphantic

Composition: intermediate

Minerals: amphibole, olivine, biotite, quartz, plagioclase feldspar

Basalt

Texture: aphantic

Composition: Mafic

Minerals: pyroxene, olivine, plagioclase feldspar

Dirote

Texture: phaneretic

Composition: intermediate 

Minerals: pyroxene, potassium feldspar, amphibole, biotite, quartz

Gabbro

Texture: phaneretic

Composition: mafic 

Minerals: quartz, muscovite, pyroxene

Granite

Texture: phaneretic

Composition: felsic

Minerals: quartz, pottasium feldspar, biotite

Obsidian

Texture: glassy

Composition: felsic

Minerals: muscovite, silica

*volcanic glass

Pegmatite:

Texture: pegmatic

Composition: felsic

Minerals: quartz, potassium feldspar, muscovite

Peridotite

Texture: phaneretic

Composition: ultramafic

Minerals: pyroxene, olivine

Porphyritic Andesite

Porphyritic Rhyolite

Texture: porphyritic

Composition: felsic

Minerals: quartz, muscovite, potassium feldspar

Pumice

Texture: vesicular

Composition: felsic

Minerals: quartz, potassium feldspar

*soft, porous, white, yellow, gray or light pink in color

Rhyolite

Texture: aphantic

Composition: felsic

Minerals: potassium feldspar, quartz, biotite

Scoria

Texture: scoriaceous

Compostion: mafic

Minerals: iron, calcium

*volcanic rock, big holes, red/black in color

Tuff

Texture: pyroclastic

commposition: felsic

Minerals: quartz, potassium feldspar

*ash-like

Volcanic Breccia

Texture: porphyritic

Composition: felsic

Minerals: ash

*angular fragments of volcanic materials

Sedimentary--QUIZ YOURSELF!