Jasper and Quartz Breccia
Silica breccia (SiO2)
sedimentary
Category
Sedimentary Rock (Possibly Composed Of Various Minerals)
Browse sedimentary rock (possibly composed of various minerals) specimens identified by the Rock Identifier community.
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Druzy Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (Pebble)
Arenite (SiO2 based)
sedimentary
Jasper
Silicon dioxide (SiO2)
sedimentary
Conglomerate
Conglomerate (SiO2 matrix with various silicate clasts)
sedimentary
Sandstone (Red/Brown)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Quartz-rich rock, possibly milky quartz or quartzite
Quartz (SiO₂), potentially quartzite if the grains are fused
mineral
White Marble
Calcite-rich Metasomatized Carbonate (CaCO3)
metamorphic
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Quartzose Sandstone (Sedimentary Rock)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone (likely Graywacke or Arkosic varieties)
Arenite (composed primarily of SiO2)
sedimentary
Dark river pebble (likely basalt or andesite)
Fine-grained mafic/intermediate volcanic rock; commonly basalt (plagioclase ± pyroxene/olivine)
igneous
Sandstone
Arenite (Siliclastic Sedimentary Rock)
sedimentary
Gravel and Sand Aggregate
Unconsolidated Clastic Sediment
sedimentary
Painted Garden Rock
Coated Siltstone or Mudstone
sedimentary
Polished red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides
mineral
Serpentinite
Serpentinite (composed largely of serpentine group minerals including Antigorite, Lizardite, and Chrysotile, (Mg,Fe)3Si2O5(OH)4)
metamorphic
Quartz with inclusions (likely Chlorite or Hornblende) and country rock
SiO2 (Quartz) with associated ferromagnesian minerals
Mineral/Igneous/Metamorphic association
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Fossil Seashell
Invertebrate fossil (Bivalvia)
fossil
Red Sandstone
Arenite (with Iron Oxide)
sedimentary
Granite (Fine-grained)
Phaneritic Felsic Igneous Rock
igneous
Likely foliated metamorphic rock, possibly schist
Mica schist or micaceous quartzite; exact identification is uncertain from the photograph
metamorphic
Banded Chert
Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)
Sedimentary
Diorite (possibly Orbicular Diorite or Porphyritic Diorite)
Intermediate Phaneritic Igneous Rock
igneous
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Red Granite Pebble
Intrusive Felsic Igneous Rock (Granite)
igneous
Mica Schist
Mica Schist (KAl2(AlSi3O10)(OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Granite
Felsic intrusive igneous rock
igneous
Sandstone Anvil / Nutting Stone
Quartzose Sandstone (Sedimentary Rock)
sedimentary
Halite
Halite (Sodium Chloride, NaCl)
mineral
Dalmation Jasper
Perthitic Feldspar with Arfvedsonite inclusions
igneous
Sandstone (with potential mineral inclusions)
Clastic sedimentary rock (primarily Quartz, SiO2)
sedimentary
River Pebble (Greywacke / Basalt Pebble)
Indeterminate Rounded Pebble (composed of quartz, feldspar, or mafic minerals)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Granite
Intrusive Igneous Rock
igneous
Greenish rock with white veins, possibly epidote or chlorite bearing rock with quartz/calcite veins
Altered mafic rock or Epidosite
metamorphic or igneous alteration
Malachite
Malachite — Cu₂CO₃(OH)₂, hydrated copper carbonate
mineral
Sandstone (Pebble)
Sandstone (arenite, arkose, wacke depending on composition)
sedimentary