Garnet Schist
Almandine-Muscovite Schist
metamorphic
Category
Sedimentary Rock (Possibly Composed Of Various Minerals)
Browse sedimentary rock (possibly composed of various minerals) specimens identified by the Rock Identifier community.
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Pyrite in Quartz
FeS2 (Iron Pyrite) with SiO2 (Quartz)
Mineral/Igneous/Hydrothermal
Shale
Fissile Mudrock (Clay-rich Sedimentary Rock)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
sedimentary
Sedimentary Breccia
Breccia (Clastic Sedimentary Rock)
sedimentary
Quartz Crystal
Quartz (SiO₂)
Mineral
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz with Hematite/Limonite oxides)
sedimentary
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Serpentinite
Serpentinite
metamorphic
Conglomerate
Conglomerate (Detrital sedimentary rock)
sedimentary
Included Quartz Beads (likely Phantom Quartz or Garden Quartz)
Quartz (SiO2) with various mineral inclusions
Mineral
Chert (White/Light Tan)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Biotite Mica in Host Rock
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Sandstone (likely Arkosic or Lithic)
Clastic Sedimentary Rock (SiO2 with accessory minerals)
sedimentary
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
mineral
Granite
Granite (composed of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Septarian Nodule
Septarian Nodule (Mixture of Calcite, Aragonite, and Limestone/Clay)
sedimentary
Quartz Druzy on Basalt
Silicon Dioxide (SiO2) on Mafic Volcanic Rock
Mineral on Igneous Rock
Turquoise (Green variety)
Hydrous phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Milky Quartz
Quartz (Silica / Silicon Dioxide), SiO2
mineral
Conglomerate
Conglomerate rock
sedimentary
Muscovite Mica
Muscovite (Potassium Mica) KAl2(AlSi3O10)(OH)2
Mineral
Limonite (often after Hematite or Goethite)
Limonite (FeO(OH)·nH2O)
mineral
Dalmatian Jasper
Peralkaline rhyolite
igneous
Biotite Schist with Garnet
Garnet-Biotite Schist
metamorphic
Dalmatian Stone
Peralkaline Feldsphathic Igneous Rock
igneous
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)
sedimentary
Quartz
Silicon Dioxide (SiO2)
Mineral
Limonitic Iron Ore / Goethite
Hydrated Iron(III) oxide-hydroxide (primarily FeO(OH)·nH2O)
sedimentary
Jasper
Jasper (a variety of Chalcedony, SiO2)
Mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Conglomerate
Clastic sedimentary rock (Puddingstone)
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (Fe2O3 enriched)
sedimentary
Granite
Phaneritic Felsic Igneous Rock
igneous
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Sandstone (Banded)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartz on Host Rock
Silicon Dioxide (SiO2)
Mineral Specimen
Specular Hematite (Iron Ore)
Iron(III) oxide (Fe2O3)
mineral
Ironstone Concretion (Moqui Marble type)
Iron oxide concretion (Goethite/Hematite and Sandstone)
sedimentary
Wishing Stone (Basalt or Siltstone with Quartz/Calcite Vein)
Basalt (SiO2+MgO+FeO) or Siltstone with a Quartz (SiO2) or Calcite (CaCO3) vein
igneous or sedimentary