Red Jasper
Silicon Dioxide (SiO2) with Iron impurities
Category
Browse mineral or sedimentary rock (with mineral inclusions) specimens identified by the Rock Identifier community.
Red Jasper
Silicon Dioxide (SiO2) with Iron impurities
Ruby in Zoisite (Anyolite)
Anyolite (Combination of Corundum and Zoisite)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Water-worn pebble)
Silicon Dioxide (SiO2)
Basalt with Calcite Veins
Aphanitic mafic volcanic rock with CaCO3 inclusions
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
Snowflake Obsidian
Spherulitic Volcanic Glass (primarily SiO2 with Cristobalite inclusions)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
White Quartz Pebble (Milky Quartz)
Silicon Dioxide (SiO2)
Granite Cobble (River Stone)
Felsic intrusive igneous rock (composition: Quartz, Feldspar, Mica)
Granite
Plutonic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)
Pink Granite
Granite (Phaneritic igneous rock rich in Alkali Feldspar and Quartz)
Flower Agate (Cherry Blossom Agate)
Chalcedony (Silicon Dioxide) with Opaque Inclusions - SiO2
Quartzite with Garnet
Garnetiferous Quartzite (SiO2 + X3Y2(SiO4)3)
Dalmatian Stone (often called Dalmatian Jasper)
Peralkaline Feldsphathic Igneous Rock
Banded Chert
Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)
Flower Agate
Chalcedony (Silicon Dioxide, SiO2) with Opaque Spherulitic Inclusions
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
Conglomerate
Conglomerate (clastic sedimentary rock)
Quartz Pebble
Silicon Dioxide (SiO2)
Basalt
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Milky Quartz
Silicon Dioxide (SiO2)
Sunkissed Quartz or Hematoid Quartz
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
Quartzite (specifically Milky Quartz variety)
Quartz (SiO2)
Tiger's Eye (with Blue Tiger's Eye / Hawk's Eye)
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
Fancy Jasper
Silicon Dioxide (SiO2) with impurities
Milky Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
Red Jasper
Silicon dioxide (SiO2) with iron oxide (Fe2O3) inclusions
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Ruby in Zoisite (Anyolite)
Corundum var. Ruby in Zoisite (Al2O3 + (Ca2Al3(SiO4)3(OH)))
Amygdaloidal Rhyolite
Rhyolite (felsic volcanic rock) with amygdules
Quartzite
Quartzite (Primary mineral: Silicon Dioxide, SiO₂)
Amber
Succinite (Fossilized Resin)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Sandstone (Picture Sandstone)
Arenite (primarily SiO2)
Sandstone with Secondary Mineral Encrustation
Arenite with Silica/Calcite deposits (SiO2 or CaCO3)
Asphalt Chunk (with aggregate)
Bituminous concrete / Anthropogenic conglomerate
Moss Agate and Druzy Quartz Carving
Cryptocrystalline Silica (SiO2) with impurities
Quartz River Pebble
Quartz (Silicon Dioxide, SiO2)
Granite
Granite (Felsic Intrusive Igneous Rock)
Granite
Granite (Felsic Plutonic Rock)