Sedimentary Rocks
Argillite - a sedimentary rock composed primarily of clay-sized particles
Arkose - a sedimentary rock similar to sandstoneBanded iron formation - a fine grained chemical sedimentary rock composed of iron oxide mineralsBreccia - a sedimentary or tectonic rock composed of fragments of other, broken rocks
Chalk - a sedimentary rock composed primarily of coccolith fossils
Chert - a fine grained chemical sedimentary rock composed of silica
Claystone - a sedimentary rock formed from clayCoal - a sedimentary rock formed from organic matterConglomerate - a sedimentary rock composed of large rounded fragments of other rocks
Coquina - a sedimentary carbonate rock formed by accumulation of abundant shell fossils and fragments
Diamictite - a poorly sorted conglomerate
Diatomite - a sedimentary rock formed from diatom fossils
Dolomite or dolostone - a carbonate rock composed of the mineral dolomite +/- calcite
Evaporite - a chemical sedimentary rock formed by accumulation of minerals after evaporation; varieties include rock salt (halitite) and rock gypsum
Flint - a form of chertGreywacke - an immature sandstone with quartz, feldspar and rock fragments within a clay matrix
Gritstone - essentially a coarse sandstone formed from small pebbles
Itacolumite - porous, yellow sandstone which is flexible if cut into thin strips
Jaspillite - an iron-rich chemical sedimentary rock similar to chert or banded iron formationLaterite - a residual sedimentary rock formed from a parent rock under tropical conditions
Lignite - a sedimentary rock composed of organic material; otherwise known as Brown CoalLimestone - a sedimentary rock composed primarily of carbonate minerals
Marl - a limestone with a considerable proportion of silicate material
Mudstone - a sedimentary rock composed of clay and muds
Oil shale - a sedimentary rock composed dominantly of organic materialOolite - a chemical sedimentary limestone
Sandstone - a clastic sedimentary rock defined by its grain sizeShale - a clastic sedimentary rock defined by its grain size
Siltstone - a clastic sedimentary rock defined by its grain size
Travertine - a sedimentary rock containing calcite and iron oxides
Turbidite - a particular sequence of sedimentary rocks which form within the deep ocean environment
Wackestone - a matrix-supported carbonate sedimentary rock.

Igneous rocks
Andesite - an Intermediate volcanic rock
Anorthosite - an intrusive igneous felsic rock composed predominantly of plagioclase
Aplite - a very fine grained intrusive igneous rock composed of quartz and feldspar
Basalt - a volcanic rock of mafic composition
Adakite - a class of basaltic rocks containing low amounts of yttrium and ytterbium
Hawaiite - a class of basalts formed from ocean island (hot spot) magmatism.
Basanite - a volcanic rock of mafic composition; essentially a silica-under saturated basalt
Boninite - a magnesium-rich basalt dominated by pyroxene
Carbonatite - a rare igneous rock composed of >50% carbonate minerals
Charnockite - a type of granite containing pyroxene
Enderbite - a variety of charnockite
Dacite - a felsic to intermediate volcanic rock containing hornblende and with plagioclase > orthoclase
Diabase or dolerite - an intrusive mafic rock forming dykes or sills
Diorite - a coarse-grained intermediate plutonic rock composed of plagioclase, pyroxene and/or amphibole
Dunite - a phaneritic ultramafic rock composed of more than 90% olivine, usually forsteritic
Essexite - a silica undersaturated mafic plutonic rock (essentially a foid-bearing gabbro)
Foidolite - a plutonic igneous rock composed of >90% feldspathoid minerals
Gabbro - a coarse grained plutonic rock composed of pyroxene and plagioclase basically equivalent to basalt
Granite - a coarse grained plutonic rock composed of orthoclase, plagioclase and quartz
Granodiorite - a granitic plutonic rock with plagioclase > orthoclase
Granophyre - a subvolcanic intrusive rock of granitic composition
Harzburgite - a variety of peridotite; an ultramafic cumulate rock
Hornblendite - a mafic or ultramafic cumulate rock dominated by >90% hornblende
Hyaloclastite - a volcanic rock composed primarily of glasses and glassy tuffIce
landite - a volcanic rock
Ignimbrite - a fragmental volcanic rock
Ijolite - a very rare silica-under saturated plutonic rock
Kimberlite - a rare ultramafic, ultrapotassic volcanic rock and a source of diamonds
Komatiite - an ancient ultramafic volcanic rock
Lamproite - an ultrapotassic volcanic rock
Lamprophyre - an ultramafic, ultrapotassic intrusive rock dominated by mafic phenolcrysts in a feldspar groundmass
Latite - a silica undersaturated form of andesite
Lherzolite - an ultramafic rock, essentially a peridotite
Monzogranite - a silica under saturated granite with <5% normative quartz
Monzonite - a plutonic rock with <5% normative quartz
Nepheline syenite - a silica under saturated plutonic rock with nephew line replacing orthoclase
Nephelinite - a silica under saturated plutonic rock with >90% nephew line
Norite - a hypersthene bearing gabbro
Obsidian - a type of volcanic glass
Pegmatite - an igneous rock (or metamorphic rock) with giant sized crystals
Peridotite - a plutonic or cumulate ultramafic rock composed of olivine and pyroxene
Phonolite - a silica under saturated volcanic rock; essentially similar to nephew line syenite
Picrite - an olivine-bearing basalt
Porphyry - a rock, usually granitic, with a porphyritic texture
Pumice - a fine grained, extremely vesicular volcanic rock
Pyroxenite - a coarse grained plutonic rock composed of >90% pyroxene
Quartz diorite - a diorite with >5% modal quartz
Quartz monzonite - an intermediate plutonic rock, essentially a monzonite with 5-10% modal quartzRhyodacite - a felsic volcanic rock which is intermediate between a rhyolite and a daciteRhyolite - a felsic volcanic rock
Comendite - a peralkaline rhyolite
Pantellerite - an alkaline rhyolite-rhyodacite with amphibole phenocrysts
Scoria - an extremely vesicular mafic volcanic rock
Sovite - a coarse grained carbonatite rockS
yenite - a plutonic rock dominated by orthoclase feldspar; a type of granitoid
Tachylyte - essentially a basaltic glass
Tephrite - a silica undersaturated volcanic rock
Tonalite - a plagioclase-dominant granitoid
Trachyandesite - an alkaline intermediate volcanic rock
Benmoreite - sodic trachy and site Basaltic trachy and site
Mugearite - sodic basaltic trachy and site
Shoshonite - potassic basaltic trachy and site
Trachyte - a silica undersaturated volcanic rock; essentially a feldspathoid-bearing rhyolite
Troctolite - a plutonic ultramafic rock containing olivine, pyroxene and plagioclase
Trondhjemite - a form of tonalite where plagioclase-group feldspar is oligoclase
Tuff - a fine grained volcanic rock formed from volcanic ash
Websterite - a type of pyroxenite, composed of clinoproxene and ortho pyroxene
Wehrlite - an ultramafic plutonic or cumulate rock, a type of peridotite, composed of olivine and clinopyroxene

3111452 Wtf well now I have my daily dose of random rock information. Thanks lad!

3111489 Oh that's only two groups of rocks there's like 3 other groups still, and don't call me lad.

3111495 thanks for the tidbit lassie!

3111498 Don't call me lassie, why don't you show some respect for a older chap.

3111505 I am mate, your knowledge in the field of rocks is just to much for my mind to handle!

3111510 Ha, I'm still learning English, and well it's harder to tell when one is joking when one has to type to tell a joke.

Chalk
Ok, that's what krita is in English, good to know!

3111489
Me too!

3111516
Which country are you from?

3112016 Deutschland or Germany.

3112023
Oh, your a German! Europeans unite!

3112156 Was? no I'm kidding, you're from Europa?

3112162
Yeas, Sweden!

3112191 Så talar du svenska då.

3112198
Ja, det gör jag. Hur kommer det sig att du gör det?

3112204 Jag gick där ungefär ett år, jag kanske en lite rostiga du.

3112207
Ok, If it helps, we can continue speaking English. I normally do it on this site, even with the persons from Sweden on this site ( I know a couple of people on this site IRL) plus that it must be annoying for ther persons to see comments they don't understand...

3112233 Yeah, it's a good thing to, because I don't think I typed that right, I was trying to say 'I went there for about a year, I might be a little rusty thou.' but I'm not quite sure if I got it right.

3112244
No, you didn't got it right...
You wrote
>> keam Jag gick där ungefär ett år, jag kanske en lite rostig du
The correct is
>> Keam Jag gick där ungefär ett år, jag kanske är lite rostig...
But it's still good for Someone that went here during as small amount of time as a year!

3112310 Thanks, I'm better at German.

3112320
Oh, too bad I don't study German in school (almost no one ever does, in my class 1. Out of 23 students study German, 2 study French and the rest of the 20 students, study Spanish. Including me.), I study Spanish!

3112340 Oh I know Spanish too, ¿Cómo es tu español

3112361
Bien... Estudio Español en la escuela, ¿y tù?

3112550 No hablé muchas de las lenguas, lo sé, muchas veces.
I speak at lest 6 other languages.

3112569
Wow! Your a real little nerd!(no offense) just like pony with a hat!

3112628 I like hats, but I don't ware them. I had to learn them to past a test. I am also good with math.

I'm actually a huge nerd when it comes to rocks
theres sedimentary
igneous
and metamorphic

3112687 You are, I wasn't quite sure if I should post them all, so far just the two groups have proven to be... too much.

Please do post the Metamorphic rock types.

3113000 Okay I'll do it right now, might take a little but not as long as these, took me like 30 minutes for these.

3112642
You're cool!

3111516 I'm from canada, so yeaaaaaaaaa I'm not good either lel

Anthracite - a type of coal
Amphibolite - a metamorphic rock composed primarily of amphibole
Blueschist - a metamorphic rock composed of sodic amphiboles with a distinct blue color
Cataclasite - a rock formed by faulting
Eclogite - an ultra-high grade metamorphosed basalt or gabbro; also a facies of metamorphic rocks
Gneiss - a coarse grained metamorphic rock
Gossan - the product of the weathering of a sulfide rock or ore body
Granulite - a high grade metamorphic rock formed from basalt; also a facies of metamorphic rocks
Greenschist - a mafic metamorphic rock dominated by green amphiboles Greenstone
Hornfels - a metamorphic rock formed by heating by an igneous rock
Marble - a metamorphosed limestone
Migmatite - a high grade metamorphic rock verging upon melting into a magma
Mylonite - a metamorphic rock formed by shearing
Metapelite - a metamorphic rock with a protolith of clay-rich (siltstone) sedimentary rock
Phyllite - a low grade metamorphic rock composed mostly of micaceous minerals
Metapsammite - a metamorphic rock with a protolith of quartz-rich (sandstone) sedimentary rock
Pseudotachylite - a glass formed by melting within a fault via frictionQuartzite - a metamorphosed sandstone typically composed of >95% quartzSchist - a low to medium grade metamorphic rock
Serpentinite - a metamorphosed ultramafic rock dominated by serpentine mineralsSkarn - a metasomatic rock
Slate - a low grade metamorphic rock formed from shale or silts
Suevite - a rock formed by partial melting during a meteorite impact
Talc carbonate - a metamorphosed ultramafic rock with talc as an essential constituent; similar to a serpentinite
Soapstone - essentially a talc schist
Whiteschist - a high pressure metamorphic rock containing talc + kyanite

3111452
I took the liberty of pasting your Metamorphic Rock post into this thread to keep the rock type threads more contained. I hope this is alright with you, Abbilden.

3126955 That's okay.

3112023
Hey, I'm from Europe too! PARTAY!!!
Imma Polish girl

3127024 that's nice, I don't speak Polish.

3127031
It's okay. I don't speak German...
I've been to Germany before though! (But only for like a day I was driving through the country on my way to France. I don't know if that counts, but we were sightseeing there!)