![card image](http://www.dakotamatrix.com/images/products/galena31837a.jpg)
is a metallic. Very dense, gray, shiny, sulfide mineral. PbS
Galena
![card image](http://upload.wikimedia.org/wikipedia/commons/0/0c/Magnetite-163979.jpg)
Leaves a black streak, metallic group, oxide mineral, Fe3O4 (is magnetic)
Magnetite
![card image](http://4.bp.blogspot.com/-vs03HjdfmUI/Tqc7IoHHzsI/AAAAAAAABDE/EH9NkhaeqAM/s1600/graphite08.jpg)
Gray streak, blackish gray, metallic group, native element (you can write with it) C
Graphite
![card image](http://skywalker.cochise.edu/wellerr/mineral/hematite/6hematite-specular33.jpg)
red and black, leaves a red streak, metallic group, oxide mineral. Fe203
Hematite
![card image](http://herb-magic.com/pyrite-large.jpg)
black with gold, metallic group, black streak, fools gold, sulfide mineral FeS2
Pyrite
![card image](http://lh5.ggpht.com/-8ioIqsFcjEI/UT4r8YkB4SI/AAAAAAAAG30/sUkz6oweQ1s/s720/00319%252520IMG_5765%252520garnet%252520granite.jpg)
Silicate mineral, Dark, red, glassy, non-metallic group, brittle Fe, Mg, Ca, Al
Garnet
![card image](http://www.mineralogicalassociation.ca/poster/images/Halite_lg.jpg)
Salty Taste, not very dense, clear in color, cubic cleavage, halite mineral NaCl
Halite
![card image](http://www.sci.ccny.cuny.edu/~mcesaire/Gypsum2.jpg)
scratch with fingernail, non-metallic, light, sulfate mineral, soft, CaS04 2H20
Gypsum
![card image](http://www.minimegeology.com/shop/images/calcite_dark_w.jpg)
Reacts with HCL, white, brown, clear, perfect cleavage, no 90 angles, carbonate mineral CaCO3
Calcite
![card image](http://www.mineralminers.com/images/fluorite/mins/flum101.jpg)
Purples, blues, yellow, clear, non-metallic, Illinois state mineral, soft, cleavage, halide mineral CaF2
Fluorite
![card image](http://geology.com/minerals/photos/olivine-382.jpg)
Silicate mineral, always olive green, isolated tetrahedral, no cleavage, hard, non-metallic group MgFe
Olivine
![card image](http://classconnection.s3.amazonaws.com/58/flashcards/824058/jpg/biotite_mica1322610393885.jpg)
dark mica, silicate, cleaves into thin sheets, non-metallic group, KMgFeAl,
Biotite Mica
![card image](http://www.cmdowns.com/images/minerals/muscovite-mica.jpg)
light mica, silicate, breaks into thin sheets, cleavage, soft, non-metallic group, Al
muscovite mica
![card image](http://image.ec21.com/image/agdll/oimg_GC05999944_CA06055712/K-Feldspar.jpg)
pink and salmon colored, planes at 90, milky, silicate, non-metallic group, K Al
K Feldspar
![card image](https://lifeinplanelight.files.wordpress.com/2011/02/3quartz.jpg)
SiO2, silicate mineral, non-metallic group, pink, purple, brown, clear, breaks into sharp edges, crystals, no cleavage, hard
Quartz
![card image](http://legacy.belmont.sd62.bc.ca/teacher/geology12/photos/rocks/igneous/granite.jpg)
phaneritic, silicic, felsic, light colored, Quartz. K-feldspar
Granite
![card image](http://pitt.edu/~cejones/GeoImages/2IgneousRocks/IgneousTextures/4PorphyriticFinez/RhyoliteWholeRock.jpg)
crystals not visible, (aphanitic or porphyritic) silicic, felsic, light colored, quarts, K-feldspar
Rhyolite
![card image](http://2.bp.blogspot.com/-4YJYOwyVHtE/TzsZL16AVTI/AAAAAAAAACk/rFLKb_XiM68/s1600/quartz-diorite.jpg)
Intermediate, gray, phaneritic, K-feldspar, plagioclase feldspar, Biotite, quartz, augite
Diorite
![card image](http://skywalker.cochise.edu/wellerr/rocks/igrx/6andesite2657.jpg)
Intermediate, gray, porphyritic, or aphanitic, K-feldspar, plagioclase feldspar, biotite, quartz
Andesite
![card image](http://upload.wikimedia.org/wikipedia/commons/a/aa/GabbroRockCreek1.jpg)
Mafic, dark brown or black, phaneritic, Ca-plagioclase, Olivine,
Gabbro
![card image](http://geology.com/rocks/pictures/basalt-380.jpg)
Mafic, dark brown or black, Porphyritic or aphanitic, Ca-plagioclase, Olivine
Basalt
![card image](http://s3.amazonaws.com/estock/fspid9/10/61/15/6/obsidian-igneous-volcanic-1061156-o.jpg)
Solid Glass, no crystals present
Obsidian
![card image](http://1.bp.blogspot.com/_9g1Ege5PHsE/TVFhBZEiLQI/AAAAAAAAD88/3rujioqODiw/s1600/pumice-rock.jpg)
Vernacular Glass, gray to tan
Pumice
![card image](http://flexiblelearning.auckland.ac.nz/rocks_minerals/rocks/images/conglomerate1.jpg)
Clastic , coarse grained, rounded clasts,
Conglomerate
![card image](http://flexiblelearning.auckland.ac.nz/rocks_minerals/rocks/images/breccia3.jpg)
Coarse grained, angular clasts
Breccia
![card image](http://skywalker.cochise.edu/wellerr/rocks/sdrx/6sandstone-quartz3952.jpg)
Medium grained, mostly quartz
Quartz Sandstone
![card image](http://skywalker.cochise.edu/wellerr/rocks/sdrx/6sandstone-arkose-rock62a.jpg)
Medium grained, feldspar, Quartz,
Arkosic Sandstone
![card image](http://geohistory.valdosta.edu/basics/images_basics/rocks/basic_rocks/sand/green_Graywacke.gif)
Dirty sandstone, medium grained, quartz, rock fragments,
Graywacke
![card image](http://geology.com/rocks/pictures/shale.jpg)
Very fine grained, very fine grained, clay minerals, and sometimes quartz
Shale
![card image](http://ubpost.mongolnews.mn/wp-content/uploads/2013/02/COAL01.jpg)
swamp environments, decomposed plant material, black often shiny, organic carbon
Coal
![card image](https://seashellsbymillhill.files.wordpress.com/2009/05/coquina-rock-signed1.jpg)
calcite
Coquina
![card image](http://upload.wikimedia.org/wikipedia/commons/d/d0/Rock_salt_crystal.jpg)
Halite
Rock Salt
SiO2
Chert
![card image](http://upload.wikimedia.org/wikipedia/commons/4/4e/Augen-gneiss-2.jpg)
alternating light and dark bands
light bands: quartz and
feldspar
Dark bands: hornblende, augite, garnet, biotite, etc.
Gneiss
![card image](http://upload.wikimedia.org/wikipedia/commons/5/5d/Schist.jpg)
Sheet-like grains; scaly, "shitose" texture. Sparkly or
shiny appearance. ("Shiny Schist")
minerals: biotite,
muscovite, chlorite. Minor amounts of quartz, or dark silicate minerals
Schist
![card image](http://earthphysicsteaching.homestead.com/Phyllite.jpg)
microscopic flakes of mica create a sheen (slight reflective surface)
Phyllite
![card image](http://ecx.images-amazon.com/images/I/818vQOPLntL.jpg)
parallel orientation of of mica flakes created "slatey cleavage" planes of weakness
Slate
![card image](http://upload.wikimedia.org/wikipedia/commons/b/be/Quartzite_2_jpg.jpg)
very hard (scratches glass). visible grains of quartz
Quartzite