Serpentinite
Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)
metamorphic
Category
Mineral And Metamorphic Rock
Browse mineral and metamorphic rock specimens identified by the Rock Identifier community.
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Diamond
Native Carbon (C)
gemstone
Diamond
Diamond (C)
mineral
Diamond
Carbon (C)
mineral
River Pebble (Quartzite)
Quartzite (SiO2)
metamorphic
Slate
Slate (Foliated metamorphic rock consisting mainly of quartz and muscovite or illite)
metamorphic
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Ruby
Corundum (Al2O3 with Chromium trace impurities)
mineral
Serpentine (Serpentinite)
Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al)2O5(OH)4)
metamorphic
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
gemstone
Blue Apatite
Apatite (Group), Ca5(PO4)3(F,Cl,OH)
mineral
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Quartzite
Metamorphic quartz-rich rock
metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Quartzite Cobble
Metamorphic Rock (SiO2 dominated)
metamorphic
Quartzite
Metamorphic Quartz-rich Rock
metamorphic
Phyllite
Phyllite (regional metamorphic rock)
metamorphic
Quartzite with Hematite staining
Metamorphic Rock (rich in SiO2)
metamorphic
Quartzite
Metamorphic Rock (Mainly SiO2)
metamorphic
Quartzite Pebble (with Iron Inclusions)
Metamorphic Rock (Mainly SiO2)
metamorphic
Pink Quartzite
Silica (SiO2) - Metamorphic rock
metamorphic
Quartzite pebble
Metamorphic rock (mainly SiO2)
metamorphic
Quartzite (River Cobble)
Metamorphic Quartz-rich Rock
metamorphic
Quartzite
Metamorphic Rock (Mainly SiO2)
metamorphic
Quartzite
Metamorphic rock (primarily SiO2)
metamorphic
Phyllite
Phyllite (Foliated metamorphic rock)
metamorphic
Schist
Mica Schist (Metamorphic Rock)
metamorphic
Weathered quartz-rich river cobble, possibly quartzite
Quartzite (mostly microcrystalline SiO₂), tentatively identified
metamorphic
Quartz (likely milky/rose quartz variety)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Quartzite river pebble
Quartzite (SiO2)
metamorphic
Sandstone pebble
Sandstone (arenite / quartzarenite)
sedimentary
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Pebble (likely a type of sandstone or quartzite pebble)
Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.
Sedimentary rock
Quartzite with Quartz Veining
Quartzite (primarily SiO2)
metamorphic
Polished Picasso jasper
Silicified carbonate rock, commonly marketed as Picasso jasper; composition varies and is not a single mineral species
metamorphic
Garnet Beads
Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)
Mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz Cobble (River Rock)
Silicon Dioxide (SiO2)
mineral
Garnet (Almandine/Pyrope series)
Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)
mineral