Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2 + Fe2O3
sedimentary
Category
Antropogenic (Man Made Material)
Browse antropogenic (man made material) specimens identified by the Rock Identifier community.
Jasper (Green/Yellow Moss Jasper)
Silicon Dioxide (SiO2)
mineral
Chert (specifically Gray/Banded Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Black Obsidian
Volcanic Glass (predominantly SiO2, Silicon Dioxide)
igneous
Jasper
Silicon dioxide (SiO2)
sedimentary
Banded Chert (or Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (variant Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (specifically Jasper)
Silicon dioxide (SiO2) with iron oxide inclusions
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Chert (Flint Pebbles)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Fossiliferous Rock (likely Dinosaur Fossil in Matrix)
Permineralized Vertebrate Fossil (Calcium Carbonate/Silica replaced bone material)
sedimentary
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Sodalite
Sodalite: Na8(Al6Si6O24)Cl2
igneous
Chalcedony (Moonstone variant or White Agate)
Silicon Dioxide (SiO₂)
mineral
Brown Jasper (Likely)
Jasper (Cryptocrystalline Silicon Dioxide - SiO2)
Mineral
Sandstone
Sandstone (various mineral compositions)
Sedimentary
Apatite
Apatite Group (e.g., Fluorapatite Ca5(PO4)3F, Chlorapatite Ca5(PO4)3Cl, Hydroxylapatite Ca5(PO4)3(OH))
mineral
Diamond
Diamond (carbon allotrope), C (chemical formula)
Mineral
River Pebble (Likely Chert or Fine-Grained Sandstone/Quartzite)
Siliciclastic clast (likely Chert or Quartzarenite/Quartzite pebble)
Sedimentary
Green Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Chert (Chalcedony)
Silicon Dioxide (SiO2)
sedimentary
Pumice
Pumice (volcanic glass with vesicular texture)
igneous
Ferruginous Sandstone (Iron-rich Sandstone)
Ferruginous Arenite
sedimentary
Quartzite (Yellow/Tan)
Metamorphic Rock composed of Quartz (SiO₂)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sandstone
Arenite
sedimentary
Banded Calcite (often sold as 'Mexican Onyx' or 'Calcite Onyx')
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide impurities
sedimentary (chemical)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz - SiO2)
sedimentary
Chert (specifically Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Schist
Mica Schist (Medium-grade metamorphic rock)
metamorphic
Quartz Pebble (Iron-Stained)
Quartz (Silicon Dioxide - SiO2)
mineral
Basalt
Extrusive mafic igneous rock
igneous
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Basalt with Peridotite Inclusion
Mafic Volcanic Rock (Extrusive Igneous) with Ultramafic Xenolith
igneous
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Coquina
Biogenic Limestone (Calcium Carbonate - CaCO3)
sedimentary