Metamorphic Rock (Specifically A Rock Composed Of Minerals)

Gneiss (Granitic Gneiss)

Gneiss

Gneiss (Granitic Gneiss)

Gneiss (from German Gneis, related to 'spark')

Diorite Gneiss

Foliated Diorite Gneiss

Red Jasper

Jasper (Silicon Dioxide, SiO2 with Iron Oxide impurities)

Orange Quartz with Hematite inclusions

Quartz (SiO2) with Hematite (Fe2O3) inclusions

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

River Cobble (Salt and Pepper Gneiss)

Gneiss (High-grade regional metamorphic rock)

Biotite Schist

Biotite Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Fossiliferous Limestone

Calcareous biomicrite / Bioclastic limestone

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Vesicular Basalt

Basalt

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Petrified Wood

Silicified Wood (SiO2)

Granite

Granite (Phaneritic intrusive igneous rock)

Dragon Blood Jasper

Epidote-containing Quartz Chalcedony (SiO2 with Ca2(Al, Fe)3(SiO4)3(OH))

Gneiss (with Quartz-Feldspar vein)

Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)

Greenstone

Metabasalt / Chlorite-Epidote Schist

Mica Schist with Iron Staining

Mica Schist

Schist (with Iron Oxide)

Mica Schist

Sandstone (Iron-stained)

Clastic sedimentary rock (SiO2 with Fe2O3 staining)

Sandstone (Ferruginous)

Arenite with Iron-Oxide Cement

Sandstone

Arenite (composed primarily of SiO2)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss with Quartz Veining

Gneiss (High-grade regional metamorphic rock)

Dalmatian Stone

Dalmatian Jasper / Feldspathic Igneous Rock

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with fibrous inclusions (commonly Dumortierite)

Schist

Mica Schist

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Mica Schist

Mica Schist (Quartz-Biotit-Muscovite Schist)

Limonite (Iron Ore)

Limonite (an amorphous mixture of hydrated iron oxides, primarily FeO(OH)·nH2O)

Desert Rose (Baryte or Selenite variant)

Barium Sulfate (BaSO4) or Gypsum (CaSO4·2H2O) with Sand inclusions

Banded Gneiss (River Cobble)

Gneiss (a high-grade metamorphic rock)

Sandstone (with Iron concretions/staining)

Arenite (composed primarily of Quartz and Feldspar with Iron Oxide cement)

Banded Gneiss

Gneiss (quartz-feldspar-biotite metamorphic rock)

Sandstone with Bedding Planes

Arenite (Sedimentary rock composed primarily of sand-sized minerals)

Sandstone (Weathered Coastal Boulder)

Arenite (composed primarily of SiO2)

Basalt

Basalt (Mafic Extrusive)

Oolitic Limestone

Oolite (Sedimentary rock composed of CaCO3)

Coquina

Bioclastic Limestone

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)