Rose Quartz
Silicon Dioxide (SiO2) with trace Titanium or Manganese
mineral
Category
Man Made (Synthetic Rock)
Browse man made (synthetic rock) specimens identified by the Rock Identifier community.
Agate (Crazy Lace or Eye Agate)
Silicon Dioxide (SiO2)
mineral
Quartz Geode (with possible Manganese or Goethite coating)
Silicon Dioxide (SiO2)
mineral
Ironstone Concretion
Siderite or Ferruginous Concretion (FeCO3 or Iron Oxides)
sedimentary
Fossilized Coral
Cnidaria (Anthozoa), often replaced by Calcium Carbonate (CaCO3) or Silica (SiO2)
sedimentary
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Matrix
igneous/metamorphic
Fossil Shell in Sedimentary Matrix
Bivalvia (fossil) in Calcium Carbonate Matrix
sedimentary
Granite
Granite
Igneous
Weathered Sandstone with Algae Growth
Arenite
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartz Vein in Host Rock (Gabbro or Basalt)
Silicon Dioxide (SiO2) with Mafic Silicates
metamorphic/igneous
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Biotite Mica
K(Mg,Fe)3AlSi3O10(OH)2
Mineral in a matrix (likely quartz or feldspar)
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Basalt
Mafic Volcanic Rock (Primarily Plagioclase Feldspar and Pyroxene)
igneous
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
sedimentary
Quartz Druze on Matrix
Silicon Dioxide (SiO2)
mineral
Granite (with Quartz and Mica)
Phaneritic Felsic Igneous Rock
igneous
Sandstone (likely Arkose or Quartz Sandstone)
Arenite (SiO2 + varied clasts)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Limestone with Calcite Veins
Calcium Carbonate (CaCO3)
sedimentary
Amygdaloidal Basalt
Basalt with Secondary Mineral Infillings
igneous
Sandstone (Greywacke/Lithic Sandstone)
Arenite / Lithic Sandstone
sedimentary
Basalt
Basalt (Mafic Extrusive Rock)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Scoria (Lava Rock)
Scoria
igneous
Quartz-Veined Mudstone
Argillaceous Mudstone with Quartz Veining
sedimentary
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Tiger's Eye (Brown/Dark variety)
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)
metamorphic
Kambaba Jasper
Stromatolite / Fossilized Algae (Rhyolitic structure)
sedimentary
Conglomerate
Conglomeratic Sandstone / Sedimentary Breccia
sedimentary
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Ironstone Concretion (Nutstone)
Ironstone (with High Limonite/Hematite Content)
sedimentary
Dyed Agate Geode (Pink/Magenta)
Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz
mineral
Yellow Quartzite or Yellow Jasper
Quartzite (primarily SiO2 with Iron oxide staining)
metamorphic
Milky Quartz with Chlorite/Mica inclusions
Silicon Dioxide (SiO2) with inclusions
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Dendritic Jasper
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
sedimentary
Jasper with Hematite inclusions
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)
sedimentary
Geode with Quartz Crystal Cavity
Silicon Dioxide (SiO2) in Calcareous/Siliceous Matrix
sedimentary
Granitoid (Granite/Diorite)
Course-grained Plutonic Igneous Rock
igneous