Dragon Blood Jasper (Lizard Stone/Septarian Chalcedony)
Epidote with Black Hornblende and White Quartz mixture
metamorphic
Category
Mineral Description (Anthropogenic Material)
Browse mineral description (anthropogenic material) specimens identified by the Rock Identifier community.
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Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
Mineral
Sandstone River Cobble
Arenite (SiO2 based)
sedimentary
Banded Sandstone
Arenite (Sandstone with iron oxide banding)
sedimentary
Sandstone
Clastic sedimentary rock (primarily Quartz and Feldspar)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Granite
Granite (a broadly defined plutonic igneous rock, often more specifically classified as quartz monzonite or granodiorite based on precise mineral percentages)
igneous
Herkimer Diamond
Quartz (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
sedimentary
Black Jasper (Etched)
Silicon Dioxide (SiO2) with impurities
mineral
Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Quartz (likely Rose Quartz or Milky Quartz based on color)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Black-and-white jasper
Jasper, microcrystalline quartz (SiO₂), with contrasting white mineral inclusions
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Red Sandstone
Ferruginous Sandstone (SiO2 with Fe2O3)
sedimentary
Chrysocolla (with Malachite / Secondary Copper Minerals)
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
mineral
Gneiss
Gneiss (quartz-feldspar-biotite gneiss)
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (primarily SiO2 with Feldspar)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Goldstone (aventurine glass)
Man-made copper-bearing glass; not a natural mineral (commonly sold as blue/brown goldstone)
mineral
Tumbled tree agate (dendritic agate)
Cryptocrystalline quartz, SiO₂, with manganese/iron-oxide dendrites
mineral
Chert Arrowhead and Quartz Specimen
Silicon Dioxide (SiO2)
mineral
Zircon
Zircon (Zirconium Silicate, ZrSiO4)
mineral
Chondrite Meteorite
Ordinary Chondrite (L or H Type)
Mineral
Opalite (Synthetic Moonstone/Sea Opal)
Silicon Dioxide (SiO2) glass with metallic inclusions
Synthetic/Man-made Glass
Petrified Wood (Black / Carbonized)
Silicon Dioxide (Quartz/Chalcedony replacing Organic Matter)
fossil
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite (specifically sublithic or quartz arenite)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Sandstone (likely Graywacke or Siltstone variety)
Clastic Sedimentary Rock (SiO2 with assorted mineral fragments)
sedimentary
Siltstone
Siltstone (primarily composed of SiO2 with various clay minerals)
sedimentary
Sandstone (Quartzose Sandstone / Feldspathic Sandstone)
SiO2 with minor impurities (Fe2O3, KAlSi3O8)
sedimentary
Quartz / Limestone Gravel
SiO2 (Silicon Dioxide) and CaCO3 (Calcium Carbonate)
igneous and sedimentary mixture
Mica-rich Schist fragment
Mica Schist
metamorphic
Mica schist
Schist (rich in Muscovite or Biotite mica)
metamorphic