Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Category
Anthropogenic Material (Man Made Sedimentary Mimic)
Browse anthropogenic material (man made sedimentary mimic) specimens identified by the Rock Identifier community.
Amber
Succinite (C10H16O)
mineraloid
Mica Schist
Mica Schist (primarily composed of Muscovite, Biotite, and Quartz)
metamorphic
Quartz River Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Jasper, Agate, Quartz Mix (Polished Beads)
SiO₂ (Silicon Dioxide) for Quartz. Jasper and Agate are cryptocrystalline varieties of Quartz.
Mineral/Semiprecious Gemstone (variety of Quartz)
Olivine (Peridot)
Olivine Group (Magnesium Iron Silicate), (Mg, Fe)2SiO4
mineral
Diamond
Diamond (pure Carbon, C)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Rose Quartz
Silicon Dioxide (SiO2) with trace elements of titanium, iron, or manganese
mineral
Agate (Bead Form)
Agate (Cryptocrystalline Quartz, SiO2)
mineral
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
mineral
Diamond (Macled/Crystal fragment)
Carbon (C), isometric crystal system
mineral
Milky Quartz (Tumbled Pebble)
Silicon Dioxide (SiO2)
mineral
River Rock (Quartzite/Chert conglomerate)
Quartzite (SiO2)
metamorphic
Peridotite
Peridotite (Ultramafic Rock)
igneous
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Granite (specifically Rapakivi Granite)
Phaneritic Felsic Igneous Rock (Granite)
igneous
Basalt with Peridotite Inclusion
Mafic Volcanic Rock (Extrusive Igneous) with Ultramafic Xenolith
igneous
Turquoise
Turquoise (Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O)
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Diamond
Carbon (C)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Sandstone (with differential weathering)
Arenite / Quartz Sandstone (SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone Pebble (Quartzite-rich)
Clastic Terrigenous Sedimentary Rock (SiO2 dominant)
sedimentary
Sandstone (specifically an Iron-Concretion)
Arenite with Iron Oxide (Limonite/Goethite) cementation
sedimentary
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Cubic Zirconia (Simulated Diamond)
Zirconium dioxide (ZrO2)
mineral
Mica Schist
Mica Schist (contains Muscovite/Biotite, Quartz)
metamorphic
Moss Agate
Silicon Dioxide (SiO2) with mineral inclusions of hornblende or chlorite
Mineral (variety of Chalcedony)
Rough Diamond
Native Carbon (C)
mineral
Diamond (set in jewelry)
Diamond (Carbon, C)
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite - Lithium-rich Mica)
mineral
Diamond
Native Carbon (C)
mineral
Milky Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Quartzite
Meta-quartzite (SiO2)
metamorphic
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Diamond
Native Carbon (C)
mineral
Serpentinite (often containing Jadeite/Nephrite)
Antigorite-rich Serpentine Rock, (Mg, Fe)3Si2O5(OH)4
metamorphic
Tree Agate
Silicon Dioxide (SiO2) with inclusions of manganese and iron oxides
mineral