Green Slag Glass
Cullet (Amorphous Silicon Dioxide with impurities)
Man-made rock-like material
Category
Metamorphic Rock (Specifically A Rock Composed Of Minerals)
Browse metamorphic rock (specifically a rock composed of minerals) specimens identified by the Rock Identifier community.
Biotite Schist
Biotite-rich Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)
metamorphic
Milky Quartz Mushroom Carving
Quartz (Silicon Dioxide, SiO2)
mineral
Green Opal
Hydrated Silica (SiO2·nH2O)
mineraloid
Anthracite Coal
Anthracite (Carbon-rich metamorphic rock)
metamorphic
Gold Ore in Quartz
Native Gold (Au) in Quartz (SiO2)
mineral
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Unakite
Unakite Epidosite (Granite with epidote and orthoclase)
metamorphic
Magnetite (potentially as a Lodestone or within Ironstone)
Magnetite (Fe3O4)
mineral
Vesicular Basalt with Secondary Mineral Inclusions
Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Milky Quartz (or Iron-Stained Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Banded Iron Formation (BIF) with Quartz
Banded Iron Formation, often composed of alternating layers of hematite (Fe2O3) or magnetite (Fe3O4) and chert (microcrystalline quartz, SiO2)
Sedimentary
Vesicular Basalt (Iron-rich)
Scoriaceous Basalt / Oxidized Vesicular Basalt
igneous
Sodalite
Sodalite (Na4Al3Si3O12Cl)
Mineral
Quartz Vein with Iron Staining
Silicon Dioxide (SiO2) with limonite/hematite staining
mineral
Rough Emerald/Green Beryl
Beryl (Be3Al2(SiO3)6) with trace amounts of Chromium or Vanadium
mineral
River Quartzite (or Quartz Cobble)
Quartzite (primarily Silicon Dioxide - SiO2)
metamorphic
Vesicular Basalt
Mafic Volcanic Rock (Basalt)
igneous
Labradorite
Labradorite, (Ca, Na)(Al, Si)4O8
mineral
Sandstone
Arenite
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Peacock Ore (Bornite or Iridescent Chalcopyrite)
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with oxidation
mineral
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Himalayan Pink Salt (Halite)
Halite (Sodium Chloride, NaCl)
sedimentary
Tourmalinated Quartz
Silicon Dioxide (SiO2) with inclusions of Schorl (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)
mineral
Conglomerate (River Rock)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartz / Vein Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Diorite
Phaneritic intermediate plutonic rock
Igneous
Quartzite Pebble (River Rock)
Quartzite (mainly SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Shale (with Iron Oxide staining)
Fissile Mudstone (primarily Quartz and Clay minerals)
sedimentary
Vesicular Basalt with Amygdules
Amygdaloidal Basalt
igneous
Quartzite River Rock
Metamorphic Quartzite (primarily SiO2)
metamorphic
Quartz with Hematite Staining
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) inclusions
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Conglomerate
Conglomerate (Clastic Sedimentary Rock)
sedimentary
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary