Slickenside in Limestone
Tectonized Limestone / Calcite (CaCO3)
metamorphic (localized) or sedimentary
Category
Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Red Jasper (beads)
Silicon Dioxide (SiO2) with iron inclusions
Sedimentary Rock
Jasper
Silicon dioxide (SiO2)
Mineral
Turquoise
Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O
mineral
Gneiss
Gneiss (a type of metamorphic rock)
Metamorphic Rock
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Chert (Jasper or Flint variant)
Chert (composed of microcrystalline quartz, SiO2)
sedimentary
Banded Gneiss
Gneiss (pronounced "nice")
metamorphic
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Red Jasper
Jasper (a cryptocrystalline variety of Quartz, SiO₂)
Sedimentary Rock
Biotite Gneiss
Gneiss (complex mixture including Biotite K(Mg,Fe)3AlSi3O10(F,OH)2 and Quartz/Feldspar)
metamorphic
Honeycomb Calcite
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Gneiss (specifically a Granitic Gneiss specimen)
Gneiss (high-grade metamorphic rock primarily composed of Quartz, Feldspar, and Biotite/Amphibole)
metamorphic
Turquoise
Turquoise (Hydrated phosphate of copper and aluminium) - CuAl6(PO4)4(OH)8·4H2O
mineral
Chert (Flint)
SiO2 (predominantly microcrystalline or cryptocrystalline quartz)
Sedimentary rock
Amethyst Geode/Cluster
Quartz (SiO2) - variety Amethyst
Mineral
Gneiss (Stream-worn Cobble)
Gneiss (Metamorphic rock composed primarily of Quartz, Feldspar, and Mica)
metamorphic
Sandstone
Arenite (general term for sandstone)
Sedimentary Rock
Banded River Rock / Gneiss (highly weathered)
Gneiss
Metamorphic rock
Orange Calcite Sphere
Calcium Carbonate (CaCO3)
mineral
Granite Gneiss
High-grade regional metamorphic rock (Quartz-Feldspar Gneiss)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock composed primarily of Quartz, Feldspar, and various Micas)
metamorphic
Granite (phaneritic background) with Limestone/Calcite carving
Felsic Igneous Plutonic Rock (background) / Calcium Carbonate (CaCO3) (carving)
igneous and sedimentary
Yellow Jasper (within host rock)
Silicon Dioxide (SiO2) with iron hydroxides (Goethite)
sedimentary
Jasper pebble
Silicon dioxide (SiO2) with iron oxide inclusions
sedimentary (secondary classification: cryptocrystalline quartz)
Grey Slate
Foliated Metamorphic Rock (formed by low-grade regional metamorphism of shale or mudstone)
metamorphic
Conglomerate
Conglomerate (SiO2 matrix with various inclusions)
sedimentary
Yellow Jasper
Chalcedony (Silicon Dioxide, SiO2)
sedimentary (microcrystalline quartz)
Puddingstone (specifically Gowganda Tillite or Jasper Conglomerate)
Jasper Conglomerate
sedimentary
Zebra Rock (Zebra Stone / Ribbon Stone)
Siltstone with Ferruginous Banding (Primarily Quartz, Kaolinite, and Hematite)
sedimentary
Gossan with Copper Carbonate (Chrysocolla/Malachite)
Ferruginous Oxide (Gossan) with Cu2CO3(OH)2 (Malachite) or (Cu,Al)2H2Si2O5(OH)4 (Chrysocolla)
Mineral/Sedimentary Interface
Glauconitic Sandstone (Greensand)
Glauconitic Quartz Arenite (Formula: (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
sedimentary
Conglomerate
Clastic Sedimentary Conglomerate (SiO2 primarily)
sedimentary
Pebble (river rock/beach pebble)
Pebble (clast size class)
Sedimentary Rock
Banded Jasper
Silicon Dioxide (SiO2)
Mineral/Sedimentary Rock (as a cryptocrystalline variety of quartz)
River Cobble (likely Basalt or Chert)
Siliceous River Rock / Microcrystalline Quartz / Mafic Igneous
igneous/sedimentary
Yellow Chalcedony
Chalcedony (a cryptocrystalline variety of Quartz, SiO₂)
Mineral
Banded Gneiss
Gneiss (pronounced "nice")
Metamorphic Rock
Chalcedony (Banded/Mottled Variety)
Chalcedony (a cryptocrystalline variety of Quartz, SiO2)
Mineral
Conglomerate
Conglomerate / Lithic Wacke
sedimentary
Banded Iron Formation
Banded Iron Formation (BIF)
Sedimentary Rock
Dendritic Agate (or Dendritic Opal)
SiO2 (for Agate), SiO2·nH2O (for Opal)
Mineral