Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with dendritic inclusions
mineral
Category
Mineral, Possibly Rock Fragment Containing A Mineral
Browse mineral, possibly rock fragment containing a mineral specimens identified by the Rock Identifier community.
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Corundum (Sapphire/Ruby in Matrix)
Aluminium oxide (Al2O3)
mineral
Dendritic Agate / Moss Agate
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
mineral
Moss Agate
Silicon Dioxide (SiO2) with inclusions of hornblende or chlorite
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
mineral
Vesicular Basalt (or Scoria)
Vesicular Basalt (Aphanitic-vesicular volcanic rock)
igneous
Quartz Vein in Host Rock
Quartz (SiO2) in Mafic or Sedimentary Matrix
igneous
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Garnet Schist
Almandine Garnet Schist (Fe3Al2(SiO4)3 in Schistose matrix)
metamorphic
Coquina
Coquina (Bioclastic Calcarenite)
sedimentary
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium and/or Vanadium impurities
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxide
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sand (Construction Grade)
Unconsolidated siliciclastic sediment (primarily SiO2)
sedimentary
Granite
Granite (a plutonic rock)
Igneous
Granite
Granite (Felsic Intrusive Igneous Rock)
igneous
Basalt (Purple-tinted scoria/vesicular variety)
Extrusive mafic igneous rock (SiO2 range 45–52%)
igneous
Kyanite (Green and Blue varieties)
Kyanite (Al2SiO5)
mineral
Beryl (Emerald Variety)
Beryllium Aluminum Silicate (Be3Al2(SiO3)6)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Massive Quartz with Host Rock
Silicon Dioxide (SiO2)
mineral
Slag (Industrial Glass/Metal)
Ferrous slag or Glassy silicate byproduct
Antropogenic rock (Man-made)
Quartz-Veined Mudstone
Argillaceous Mudstone with Quartz Veining
sedimentary
Petrified Wood
Silicified Wood (SiO2 - Silicon Dioxide)
metamorphic
Sunstone
Aventurine Feldspar (Plagioclase Feldspar with inclusions)
mineral
Tiger's Eye (with Blue Tiger's Eye / Hawk's Eye)
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)
metamorphic
Black Sapphire (Basaltic Blue Sapphire)
Corundum (Al2O3)
mineral
Mica-rich Sandstone or Micaceous Schist Weathering
Micaceous Schist (Muscovite-Quartz composition)
Metamorphic or Sedimentary depending on local grade
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Moss Agate
Silicon Dioxide with inclusions (SiO2 + impurities)
mineral
Amber
Succinite (fossilized resin)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Granodiorite
Granodiorite (Na,Ca)(Al,Si)4O8
igneous
Greenstone
Greenschist / Meta-basalt
metamorphic
Amber
Succinite (Fossilized Resin)
mineral
Milky Quartz
Quartz (Silica / Silicon Dioxide), SiO2
mineral
Amber with Organic Inclusions
Succinite (fossilized resin)
mineraloid