Amber
Amber (Amorphous Organic Hydrocarbon)
mineral
Category
Man Made
Browse man made specimens identified by the Rock Identifier community.
Learn about Man Made in the encyclopedia
View all →
Cinnabar in Dolomite or Quartz (Cinnabrite)
Mercury sulfide (HgS) in Dolomite (CaMg(CO3)2)
metamorphic
Fossiliferous Limestone (Chertified Limestone)
Calcium Carbonate (CaCO3) often replaced by Microcrystalline Silica (SiO2)
sedimentary
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
mineral
Quartzite
Quartzite
metamorphic
Chert Pebble (Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Yellow Jade (Nephrite or Quartzite variety)
Ca2(Mg,Fe)5Si8O22(OH)2 (Nephrite) / SiO2 (Quartzite variant)
metamorphic
Yellow Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)
metamorphic
Rose Quartz
Silicon Dioxide (SiO2) with trace impurities of titanium, iron, or manganese
mineral
Marble
Recrystallized Carbonate Rock (CaCO3)
metamorphic
Scoria
Vesicular Basalt / Scoriaceous Basalt
igneous
Bornite
Bornite (Cu5FeS4)
mineral
Greywacke (River Slikkenstone)
Greywacke (Impure Sandstone)
sedimentary
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Fancy Jasper (Multicolor Agate/Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Granite
Phaneritic Plutonic Rock (High Silica content)
igneous
Pink Granite
Phaneritic intrusive igneous rock with Potassium Feldspar (KAlSi3O8) and Quartz (SiO2)
igneous
Serpentine
Serpentine-group minerals (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Gastropod Fossil (Steinkern)
Class Gastropoda (internal mold)
fossil
Geode with Quartz and Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Yellow Quartzite (River Stone)
Quartzite (composed primarily of Quartz: SiO2)
metamorphic
Prase Quartz on Feldspar
Quartz (Silicon Dioxide, SiO2) with Hedenbergite inclusions on Potassium Feldspar (KAlSi3O8)
mineral
Biotite / Black Mica
Biotite K(Mg,Fe)3AlSi3O10(F,OH)2
mineral
Shale with Iron Oxide Staining
Fissile Mudstone (primarily clay minerals and quartz)
sedimentary
Hematite
Ferric oxide (Fe2O3)
mineral
Quartz with Mica (Micaceous Quartz)
Silicon Dioxide (SiO2) with Phyllosilicates
igneous/metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Sandstone (Clastic sedimentary rock, predominantly SiO2 with Fe2O3 cement)
sedimentary
Porphyritic Basalt (with Lath-like Phenocrysts)
Porphyritic Basalt
igneous
Plagioclase Feldspar
Plagioclase Feldspar Series (NaAlSi3O8 - CaAl2Si2O8)
Mineral
Stromatolite
Biogenic Sedimentary Rock (Precambrian Stromatolite fossil)
sedimentary
Serpentine
Serpentinite (Mg, Fe)3Si2O5(OH)4
metamorphic
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Blue Apatite
Calcium Fluorophosphate (Ca5(PO4)3F)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Crushed Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Fossiliferous Limestone
Biogenic Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite (SiO2 dominant)
sedimentary
Jasper
Chalcedony (SiO2)
mineral