Sandstone (Ferruginous)
Arenite (Fe2O3 stained)
sedimentary
Category
Man Made
Browse man made specimens identified by the Rock Identifier community.
Learn about Man Made in the encyclopedia
View all →
Sandstone
Arenite (primarily SiO2 with trace Fe2O3)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Limestone (Grey and White specimens)
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Granite
Phaneritic plutonic rock (Quartz, Feldspar, Mica)
igneous
Granite
Phaneritic Plutonic Felsic Rock (SiO2 > 69%)
igneous
Black Pearl (Tahitian-style Cultured Pearl)
Calcium Carbonate (Aragonite) with Conchiolin (CaCO3)
mineral
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Sandstone (likely Arkosic)
Clastic Sedimentary Rock
sedimentary
Vesicular Basalt
Basalt (Mafic volcanic rock)
igneous
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Granite Pebble
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Pink Quartz (Inclusion-filled)
Silicon Dioxide (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Quartz
Quartz (SiO₂)
Mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Seraphinite
Clinochlore (Mg,Fe)5Al(AlSi3O10)(OH)8 - specific variety for Seraphinite due to its fibrous inclusions and chatoyancy.
Mineral
Limestone (specifically Dolomitic/Crystalline Limestone)
Sedimentary Carbonate Rock (CaCO3 / CaMg(CO3)2)
sedimentary
Quartz (likely Milky Quartz)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Marble
Recrystallized Calcite / Dolomite (CaCO3)
metamorphic
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Muscovite Schist
KAl2(AlSi3O10)(OH)2 (Muscovite) in Schist Matrix
metamorphic
Limestone with Chert or Siltstone bands
Sedimentary carbonate rock (CaCO3) often with siliceous impurities
sedimentary
Kimberlite
Kimberlite
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Pumice
Pumice (Felsic volcanic rock)
igneous
Orange Quartz
Silicon Dioxide (SiO2) with iron inclusions
mineral
Chert (or potentially massive Quartz/Quartzite)
SiO2 (Silicon Dioxide)
sedimentary (if chert) / metamorphic (if quartzite)
Quartz
Silicon Dioxide (SiO2)
Mineral
Granodiorite
Granodiorite (phaneritic intrusive igneous rock)
igneous
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
sedimentary
Sandstone
Arenite (SiO2 based with various mineral cements)
sedimentary
Granite
Phaneritic plutonic felsic rock
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary