Granite
Granite (a common rock type, not a single mineral species)
Igneous
Category
Man Made Metamorphic Style Composite
Browse man made metamorphic style composite specimens identified by the Rock Identifier community.
Learn about Man Made Metamorphic Style Composite in the encyclopedia
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Coal (Anthracite / Bituminous)
Organic Sedimentary Rock (Carbon-based)
sedimentary
Chert / Green Jasper
Silicon Dioxide (SiO2)
sedimentary
Chalcedony (likely agate/chert fragment)
Microcrystalline quartz, SiO₂
mineral
Sandstone
Sedimentary Rock (Quartz/Feldspar grains cemented together)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Basalt with Epidote Veining
Basalt (Mafic Extrusive Rock) with Ca2(Al,Fe)3(SiO4)3(OH)
igneous
Marble
Marble (primarily Calcite, CaCO3 or Dolomite, CaMg(CO3)2)
Metamorphic Rock
Unakite / Epidotized Granite
Metamorphic Granite (Epidote-Orthoclase-Quartz Rock)
metamorphic
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Ferruginous Sandstone
Clastic sedimentary rock (SiO2 with Fe2O3/FeO(OH) cement)
sedimentary
Jade
Jadeite or Nephrite
Mineral/Mineraloid
Slate
Foliated Metamorphic Rock (composed of quartz, illite, chlorite)
metamorphic
Banded Gneiss
Gneiss (Metamorphic rock composed of feldspar, quartz, and mica)
metamorphic
Soapstone (Talc Steatite) Carving
Steatite (Hydrous magnesium silicate, Mg3Si4O10(OH)2)
metamorphic
Banded Onyx (Green Onyx)
Banded Calcite or Travertine (CaCO3)
Sedimentary
Weathered sandstone
Quartz-rich clastic sandstone, likely iron-oxide-stained
sedimentary
Mica schist, likely biotite–muscovite schist
Mica schist; predominantly quartz, feldspar, biotite and/or muscovite mica. Exact mineral composition cannot be confirmed from the photograph alone.
metamorphic
Granite
Phaneritic Felsic Igneous Rock
igneous
Granite Pebble
Granite (Phaneritic intrusive rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Lazulite
Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2
mineral
Basalt with Epidote/Chlorite
Amygdaloidal Basalt (SiO2 with (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)))
igneous
Sandstone
Arenite (Clastic Sedimentary Rock)
sedimentary
Sandstone (likely Arkosic or Lithic Sandstone)
Sandstone (SiO2 predominant)
sedimentary
Scoria
Scoria (a vesicular basalt or andesite)
igneous
Muscovite mica
Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂
mineral
Green Banded Chert (Agate/Jasper)
Silicon Dioxide (SiO2) with trace impurities of Chlorite or Glauconite
sedimentary
Diamond
Carbon (C)
gemstone
Diamond (in Gold Jewelry)
Carbon (C)
mineral
Polished red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Tektite
Natural impact glass
meteorite
Coquina
Coquina (Biogenic Limestone / CaCO3)
sedimentary
Possible weathered granite or gneiss
Feldspar–quartz–mica rock; exact identification is uncertain from the photograph
igneous
Rhodonite
(Mn,Fe,Mg,Ca)SiO3
mineral
Basalt (Greenstone)
Mafic volcanic rock (Basalt)
igneous
Greenschist
Greenschist facies metamorphic rock
metamorphic
Red Sandstone
Clastic sedimentary rock (primarily Quartz with Hematite)
sedimentary
Red Sandstone (Arkose)
Clastic Sedimentary Rock (Lithic Arkose)
sedimentary
Granite (Phaneritic)
Granite (Plutonic Igneous Rock)
igneous