Granite
Phaneritic Plutonic Felsic Rock
Category
Browse igneous and sedimentary specimens identified by the Rock Identifier community.
Granite
Phaneritic Plutonic Felsic Rock
Granite Cobble
Granite
Granite
Granite
Granite
Granite (Phaneritic Igneous Rock)
Granite
Phaneritic Felsic Igneous Rock
Granite Pebble
Igneous Intrusive Rock (Quartz-Feldspar-Mica Phenocrysts)
Granite
Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)
Granite
Granite (Felsic Plutonic Rock)
Granite
Granite (composed mainly of Quartz, Feldspar, and Mica)
Granite
Intrusive igneous rock (SiO2 range 65-75%)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz with Iron Staining
Silicon Dioxide (SiO2)
Quartz (Milky Quartz/Citrine Type)
Silicon Dioxide (SiO2)
Milky Quartz with Mineral Inclusions
Silicon Dioxide (SiO2) with miscellaneous inclusions
Milky Quartz
Silicon Dioxide (SiO2)
Quartz / Quartzite
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon dioxide (SiO2)
Biotite or Phlogopite Mica
K(Mg,Fe)3(AlSi3O10)(F,OH)2
Dalmatian Stone
Dalmatian Stone (formerly called Dalmatian Jasper)
Granite River Cobble
Granitoid (comprising Quartz, Feldspar, and Mica)
Epidote and Quartz in Basalt
Epidote [Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)] in Metabasalt
Indigo Gabbro
Gabbro (Alkali Gabbro)
Granite
Granite
Granite
Granite (Felsic Plutonic Rock)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Weathered Gabbro or Diorite (Igneous Cobble)
Phaneritic Basic/Intermediate Igneous Rock
Granite or Porphyritic Igneous Rock (weathered)
Granitoid
Sodalite
Na8(Al6Si6O24)Cl2
Quartz Vein in Host Rock (Breccia/Rhyolite)
Silicon Dioxide (SiO2) with matrix
Quartz
Quartz (SiO₂)
Fragmented Sedimentary Pebble
Clastic Sedimentary Specimen
Shale (Beach-worn)
Laminated Pelite (primarily clay minerals and quartz)
Hypersthene (or Enstatite/Ferrosilite)
Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)
Mica
Phlogopite or Biotite group (KMg3(AlSi3O10)(F,OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)
Basalt
Mafic Igneous Rock
Porphyry
Porphyritic Igneous Rock
Porphyry (likely Porphyritic Andesite or Basalt)
Porphyritic Igneous Rock
Porphyry
Porphyritic Igneous Rock
Basalt
Basalt (Igneous Volcanic)
Diorite
Intrusive Igneous Diorite