Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Category
Not A Rock (Animated Character)
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Granite
Felsic intrusive igneous rock
igneous
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Shale with Plant Fossils / Carbonaceous Shale
Laminated Mudrock (Siliciclastic)
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Agate
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Red Garnet
Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)
Mineral
Chert Conglomerate (or Breccia)
Sedimentary Clastic Rock (variety: Ferruginous Chert Breccia)
sedimentary
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Quartz Vein in Host Rock (Gossanous Matrtix)
Silicon Dioxide (SiO2) with iron oxides (Limonite/Hematite)
mineral
Limonitic Iron Ore / Goethite
Hydrated Iron(III) oxide-hydroxide (primarily FeO(OH)·nH2O)
sedimentary
Pink Opal
Hydrated silicon dioxide (SiO2·nH2O) with inclusions
mineral
Amethyst
Amethyst (Varietal of Quartz), SiO2 (Silicon Dioxide)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron impurities
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
mineral
Agate
Cryptocrystalline Quartz (SiO2)
mineral
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Green Aventurine (Propably a tumbled variety)
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Banded Agate / Chalcedony
Silicon Dioxide (SiO2) with trace impurities
mineral
Milky and Citrine-type Quartz
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Quartz with Fuchsine inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Kyanite (Blue or Blue-Grey)
Kyanite (Al2SiO5)
metamorphic mineral
Garnet
Almandine formula: Fe3Al2(SiO4)3
mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)
mineral
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
mineral
Orthoclase Feldspar
Potassium Feldspar (KAlSi3O8)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
mineral
Dalmatian Stone
Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)
igneous
Quartzite
Quartzite (mostly SiO2)
metamorphic
Quartzite (Iron-stained)
Quartzite (SiO2)
metamorphic
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Dalmatian Jasper / Dalmatian Stone
Peralkaline Rock (Silicon Dioxide with Amphibole inclusions)
igneous