Milky Quartz
Silicon Dioxide (SiO2)
mineral
Category
Rock
Browse rock specimens identified by the Rock Identifier community.
Chert Nodule
Microcrystalline Silica (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
mineral
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Amygdaloidal Basalt with Quartz/Calcite Inclusions
Amygdaloidal Basalt (SiO2 / CaCO3 inclusions)
igneous
Ruby in Zoisite (Anyolite)
Corundum var. Ruby in Zoisite (Al2O3 + (Ca2Al3(SiO4)3(OH)))
metamorphic
Sandstone Concretion
Moqui Marble / Iron-oxide Concretion (SiO2 with Hematite/Goethite)
sedimentary
Basalt
Mafic Volcanic Rock (Primarily Plagioclase feldspar and Pyroxene)
Igneous
Slate
Slate (Foliated Metamorphic Rock)
metamorphic
Gabbro
Gabbro (Mafic Plutonic Rock)
igneous
Granite
Phaneritic Plutonic Felsic Rock
igneous
Pink Granite
Granite (Phaneritic igneous rock)
igneous
Vesicular Basalt with Secondary Mineral Infill
Mafic Volcanic Rock (Basalt)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Mica Schist
Foliated Metamorphic Rock (Schist)
metamorphic
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Granite
Granite (Phaneritic Igneous Rock)
Igneous
Phyllite
Phyllite (Foliated metamorphic rock)
metamorphic
Granite
Phaneritic Felsic Igneous Rock
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Amphibolite (specifically Hornblende Schist/Gneiss)
Amphibole-rich Metamorphic Rock
metamorphic
Pink Granite
Granite (Felsic Plutonic Rock)
igneous
Diorite
Diorite (Intermediate Plutonic Rock)
igneous
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
igneous
Conglomerate
Clastic sedimentary rock (Puddingstone)
sedimentary
Greenstone
Metamorphosed Mafic Igneous Rock
metamorphic
Conglomerate
Clastic sedimentary rock (Conglomerate)
sedimentary
Conglomerate with Quartzite Pebbles
Clastic sedimentary rock (Conglomerate)
sedimentary
Vesicular Basalt
Mafic Volcanic Rock (Basalt)
igneous
Basalt (with Porphyritic/Vesicular texture)
Extrusive mafic igneous rock
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Diorite (River Cobble)
Phaneritic Intermediate Igneous Rock
igneous
Diorite
Phaneritic Intermediate Plutonic Rock
Igneous
Lapis Lazuli
Lazurite-rich metamorphic rock
metamorphic
Granite
Felsic Intrusive Igneous Rock
igneous
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Conglomerate
Conglomerate (Detrital Sedimentary Rock)
sedimentary
Dalmation Stone (frequently called Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock
igneous
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary