Milky Quartz
Silicon Dioxide (SiO2)
mineral
Category
Anthropogenic (Human Made) Sedimentary Like Material
Browse anthropogenic (human made) sedimentary like material specimens identified by the Rock Identifier community.
Porphyritic Basalt (Peanut Obsidian/Star Galaxy-style)
Porphyritic Basalt (Silica-rich Volcanic Rock)
igneous
Mahogany Obsidian or Red Jasper
Silicon Dioxide with Iron Oxide (SiO2+Fe2O3)
Mineral/Igneous (Volcanic Glass)
Shale
Fissile mudrock (composed of clay-sized particles and detrital grains)
sedimentary
Slate
Slate (Foliated metamorphic rock)
metamorphic
Limestone (specifically Fossiliferous or Crinoidal Limestone)
Calcium Carbonate (CaCO3) - Calcite Rock
sedimentary
Schist
Mica Schist (primarily consisting of muscovite, biotite, and quartz)
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Arfvedsonite with Garnet
Na3(Fe2+,Mg)4Fe3+Si8O22(OH)2
igneous
Gold and Diamond
Native Gold (Au) and Diamond (C)
mineral
Amber
Succinite (fossilized resin)
mineral
Coquina
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Jasper and Quartz conglomerate (River Rock)
Silicon Dioxide (SiO2) - Chalcedony and Quartz variety
sedimentary
Quartzite (River Pebble)
Metamorphic Quartz (SiO2)
metamorphic
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
mineral
Chert with Quartz Veining
Silicon Dioxide (SiO2)
sedimentary
Silver (Sterling Silver Jewelry)
Argentum (Ag) mixed with Copper (Cu)
mineral
Olivine (Peridotite)
Magnesium iron silicate (Mg, Fe)2SiO4
igneous
Diamond
Native Carbon (C)
mineral
Quartz (Milky or Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Quartz with Iron Stains
Quartz (SiO2) with iron oxide/hydroxide staining
Mineral
Banded Calcite (Cave Onyx)
Calcium Carbonate (CaCO3)
sedimentary
Chert (or Flint)
Silicon dioxide (SiO2)
sedimentary
Halite
Halite (Sodium Chloride - NaCl)
Mineral
Vesicular Basalt
Mafic Volcanic Rock (Basalt)
igneous
Yellow Jasper
Jasper, a microcrystalline variety of Quartz (SiO2) with iron inclusions
sedimentary
Milky Quartz (with potential inclusion)
Silicon Dioxide (SiO2)
mineral
Sunstone
Oligoclase (a variety of Plagioclase Feldspar) - (Na,Ca)(Si,Al)4O8
mineral
Granite
Granite (Phaneritic intrusive igneous rock) - Composition: SiO2, Al2O3, K2O, Na2O
igneous
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Coquina
Biogenic Limestone (Coquina)
sedimentary
Grey River Pebble (Likely Quartz-rich or Limestone)
Clastic Sedimentary Rock (typically SiO2 or CaCO3 based)
sedimentary
Rainbow Hematite (Man-made/Treated)
Tumbled Hematite with Titanium/Anodized coating (Iron(III) oxide, Fe2O3)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Sandstone
Arenite (primarily SiO2 with various cementing agents)
sedimentary
Sugilite
Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)
mineral
Sandstone
Sandstone (lithified quartz arenite, arkose, graywacke, etc. depending on composition)
Sedimentary Rock
Sandstone (Ferruginous/Red Sandstone)
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
sedimentary
Red Jasper
Silicon dioxide (SiO2) with iron inclusions
sedimentary
Granite
Felsic Plutonic Rock (primarily SiO2, Al2O3, K2O, Na2O)
igneous
Amber
Succinite
mineral
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
mineral