Exotic rocks

Alvekite

Medium- to fine-grained calcite carbonatite.

Aplite

Granitoid with sugary texture.

Dolerite

A dark, medium-grained igneous rock, typically with ophitic texture, containing plagioclase, pyroxene, and olivine. It typically occurs in dikes and sills. Medium-grained basalt/gabbro.

Diabase

A mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. Medium-grained basalt/gabbro.

Felsite

Microcrystalline granitoid.

Fortunite

Glassy olivine lamproite.

Granitoid

Term for felsic plutonic rocks.

Granophyre

Porphyritic granite with granophyric texture.

Italite

Glass-bearing leucititolite.

Kalsilitite

Kalsilite-rich mafic igneous rock.

Keratophyre

Albitized felsic volcanic rocks.

Lamprophyre

Porphyritic, mafic to ultramafic, K-rich hypabyssal rocks.

Latite

Volcanic rock that is nearly all leucite. Potassic trachyandesite.

Leucitite

Volcanic rock composed of leucite, olivine, pyroxenes, and opaque minerals in a glassy groundmass.

Limburgite

Porphyritic granite with tourmaline.

Lipartite

Volcanic rock with poikilitic phlogopite groundmass.

Mangerite

Ultramatic melilite-CPX-bearing volcanic rock.

Marienbergite

Plutonic melilitite.

Melilitite

Undersaturated, feldspar-free hypabyssal rock composed of melilite and CPX.

Minette

Rare sodic carbonatite.

Meimechite

Orbicular gabbro.

Monchiquite

Plutonic nephelinite.

Pitchstone

Hydrous volcanic glass.

Rauhaugite

Coarse dolomitic carbonatite.

Retuculite

Broken-up pumice.

Sovite

Coarse calcite carbonatite.

Verite

Glassy olivine-diopside-phlogopite lamproite.

Tachylite

A basaltic volcanic glass.

Adakite

Mg-rich andesite. Volcanic equivalent of tonalite and trondhjemite.

Adamellite

Other name for quartz monzonite.

Alaskite

Leuco-granite composed of alkali feldspars.

Ankaramite

Olivine basalt.

Beforesite

Dolomitic carbonatite.

Boninite

Mg-rich andesite.

Camptonite

Hornblende lamprophyre.

Cancalite

Enstatite-sanidine-phlogopite lamproite.

Cedricite

Diopside-leucite lamproite.

Charnockite

Hypersthene-bearing granite.

Comendite

Peralkaline rhyolite.

Cortlandite

Pyroxene-olivine hornblendite.

Enderbite

Hypersthene-bearing tonalite.

Essexite

Nepheline monzogabbro/monzodiorite.

Fenite

Alkali feldspar-rich metasomatic rock associated with carbonatites.

Fitzroyite

Leucite-phlogopite lamproite.

Grazinite

Phonolitic nephelinite.

Grennaite

Other name for nepheline syenite.

Hawaiite

Sodic trachybasalt.

Mugearite

Sodic basaltic trachyandesite.

Benmorite

Sodic trachyandesite.

Icelandite

Al-poor, Fe-rich andesite.

Ijolite

CPX nephelinite.

Jacupiragite

Alkaline pyroxenite.

Jotunite

Hypersthene monzonorite.

Jumillite

Olivine madupitic lamproite.

Katungite

K-rich olivine melilitite.

Minette

Biotite-orthoclase lamprophyre.

Kersantite

Biotite-plagioclase lamprophyre.

Vogesite

Hornblende-orthoclase lamprophyre.

Spessartite

Hornblende-plagioclase lamprophyre.

Kudgite

Olivine melilitolite.

Ladogalite

Mafic K-feldspar syenite.

Larvikite

Augite syenite-monzonite.

Luxulianite

Alkaline ultramafic rock.

Madupite

Aegirine-augite nepheline syenite.

Mafurite

Leucite-richterite lamproite.

Malchite

Hypersthene monzonite.

Malignite

Natrolite phonolite.

Melilitonite

Mafic type of leucite foidite.

Melteigite

Feldspar-free lamprophyre.

Miagite

Orthoclase-bearing hypersthene gabbro.

Miaskite

Mafic sodic trachyandesite.

Missourite

Nepheline-bearing basalt

Monzonorite

OPX gabbro.

Picrite

Olivine-rich basalt.

Polzenite

Melilite lamprophyre.

Sannaite

Na-amphibole-augite lamprophyre.

Sanukite

Mg-rich andesite.

Teschenite

Analcime gabbro.

Theralite

Nepheline gabbro.

Troctolite

Olivine-rich gabbro.

Trondhjemite

Leuco-tonalite. Plagiogranite.

Uncompahgrite

Pyroxene melilitolite.

Urtite

Felsic nephilinolite.

Vertite

Glassy olivine-diopside-phlogopite lamproite.

Woldigite

Diopside-leucite-richterite madupidic lamproite.

Wyomingite

Diopside-leucite-phlogopite lamproite