Carnelian
Carnelian Agate (SiO2)
mineral
Category
Not A Rock (Animated Character)
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Dalmatian Jasper
Peralkaline rhyolite with Arfvedsonite inclusions
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Diamond
Diamond (pure Carbon, C)
mineral
Basalt (River Pebble)
Extrusive mafic igneous rock
igneous
BROWN GRANITE (likely 'Tan Brown' or similar)
Granite (specifically a variety rich in orthoclase feldspar, often with biotite and possibly hornblende)
igneous
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Included Quartz Beads (likely Phantom Quartz or Garden Quartz)
Quartz (SiO2) with various mineral inclusions
Mineral
Red Sandstone
Arenite (primarily Quartz, SiO2, with Iron Oxide/Hematite)
sedimentary
Calcite
Calcite (Mineral, Calcium Carbonate - CaCO3)
Mineral
Weathered Volcanic Rock (possibly Rhyolite or Andesite Pebble)
Volcanic rock (e.g., Rhyolite or Andesite, specific identification would require thin section analysis or chemical assay). Mineral composition: Primarily feldspars (orthoclase and/or plagioclase), quartz (in rhyolite), micas, amphiboles, and sometimes pyroxenes.
Igneous, specifically volcanic/extrusive (possibly Rhyolite or Andesite)
Gold
Native Gold (Au)
mineral
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Amazonite
Amazonite (KAlSi3O8)
mineral
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 based)
sedimentary
Blue Chalcedony (likely dyed Agate)
Silicon Dioxide (SiO₂)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Gold
Native Gold (Au)
mineral
Sandstone
Arenite (SiO2 principal)
sedimentary
Dyed Agate
Silicon Dioxide (SiO2)
mineral
Carnelian Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Agate (or Banded Agate)
Agate (a variety of Chalcedony, which is a cryptocrystalline form of Quartz); Chemical Formula: SiO₂ (Silicon Dioxide)
Mineral, specifically a Cryptocrystalline Quartz variety
Jasper (Yellow Jasper)
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Labradorite (likely Black Labradorite or Larvikite)
Labradorite (Na,Ca)(Al,Si)4O8. If a rock, it is typically anorthosite, gabbro, or norite, or a variety of syenite called Larvikite if it is specifically from Larvik, Norway.
Mineral/Igneous Rock
Shale
Shale (Sedimentary rock composed of mud/clay minerals)
sedimentary
Carnelian
Carnelian (Chalcedony / SiO2)
mineral
Bauxite (Concretionary)
Bauxite (Al(OH)3, AlO(OH))
sedimentary
Zoisite with Ruby / Anyolite
Anyolite (Ca2Al3(SiO4)3(OH) with Chromian Zoisite and Tschermakite inclusions)
metamorphic
Basalt
Basalt (Mafic Extrusive)
igneous
Basalt River Cobble
Basalt (Mafic Igneous Rock)
igneous
Basalt (River Stone)
Basalt
igneous
Sandstone (likely a river or beach pebble)
Sandstone (a clastic sedimentary rock)
Sedimentary Rock
Gold Nugget
Native Gold (Au)
mineral
Wishing Stone (Basalt/Greywacke with Quartz Vein)
Basalt or Siltstone with SiO2 (Quartz) hydrothermal intrusion
igneous/sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Amazonite
Microcline (KAlSi3O8) with Pb impurities
mineral
Obsidian
Volcanic Glass (SiO2)
igneous
Rock Salt (Halite)
Halite (Sodium Chloride, NaCl)
mineral
Quartz with Iron Stains
Quartz (SiO2) with iron oxide/hydroxide staining
Mineral
Shale with Vein Infillings
Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.
Sedimentary Rock