Quartzite Pebble
Quartzite (mostly SiO2)
metamorphic
Category
Metamorphic Rock (Primarily Composed Of Minerals)
Browse metamorphic rock (primarily composed of minerals) specimens identified by the Rock Identifier community.
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Serpentinite
Serpentinite (a rock composed predominantly of serpentine group minerals)
metamorphic
Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Granite
Granite (Felsic Plutonic Rock)
Igneous
Lapis Lazuli
Lapis Lazuli (A metamorphic rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)
metamorphic
Dalmation Jasper (or Dalmation Stone)
Dalmation Stone (composed of Perthite, Quartz, and Arfvedsonite)
igneous
Granite
Intrusive Igneous Rock
igneous
Greenstone
Metabasalt / Greenschist
metamorphic
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)
metamorphic
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Greenschist
Greenschist (composed of Chlorite, Actinolite, and Epidote)
metamorphic
Sandstone (likely Arkosic or Lithic Sandstone)
Clastic Sedimentary Rock (SiO2 with assorted minerals)
sedimentary
Greenstone
Metabasalt (composed mainly of chlorite, epidote, and actinolite)
metamorphic
Diorite
Intermediate Phaneritic Igneous Rock (Diorite)
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Granite Pebble
Granite
igneous
Brecciated Jasper
Silicon dioxide (SiO2) microcrystalline quartz breccia
sedimentary
Granite fragment
Granite (Felsic intrusive igneous rock)
igneous
Mixed River Stones and Minerals
Mixed Silica-rich Stones (Quartz, Agate, Jasper, Sandstone, Dalmation Stone)
sedimentary
Quartzite
Quartzite (composed primarily of Silica, SiO2)
metamorphic
Weathered sandstone or metasedimentary rock
Quartz-rich sandstone; possibly weakly metamorphosed quartzite
sedimentary
Quartzite Pebble
Quartzite (composed primarily of SiO2)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock composed primarily of Quartz, Feldspar, and various Micas)
metamorphic
Granite Pebble
Intrusive Igneous Rock
igneous
Yellow Quartzite Pebble
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Siltstone Pebble
Siltstone (composed of microscopic quartz and clay minerals)
sedimentary
Quartzite (Beach Pebble)
Quartzite (composed primarily of SiO2)
metamorphic
Dalmatian Stone
Dalmatian Stone (Felsic Igneous Rock)
igneous
Greenstone / Greenschist
Greenschist (composed of Chlorite, Epidote, and Actinolite)
metamorphic
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, or Chrysotile)
metamorphic
Conglomerate
Conglomerate (Sedimentary Rock)
sedimentary
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
igneous
Turquoise in Matrix
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
mineral
Banded Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Sandstone (Quartzose Sandstone)
Sandstone (SiO2 with various trace minerals)
sedimentary
Slate
Foliated Metamorphic Rock (Mainly composed of Quartz, Illite, Chlorite)
metamorphic
Sandstone (Iron-stained)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
sedimentary
Granite
Intrusive Phaneritic Felsic Igneous Rock
igneous
Dalmation Jasper
Dalmation Stone (perthitic feldspar with arfvedsonite)
igneous