Clear Quartz
Silicon dioxide (SiO2)
mineral
Category
Sedimentary (Processed Mineral Product)
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Sandstone (Green/Yellow Siltstone variant)
Arenite or Siltstone (primarily SiO2 with mineral staining)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Amber
Succinite (a fossilized organic resin)
mineral
Sandstone
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Granite
Granite (a plutonic igneous rock composed primarily of quartz and feldspar)
Igneous Rock
Rutilated Quartz
SiO2 with TiO2 inclusions (Quartz with Rutile)
mineral
Mica-rich Schist fragment
Mica Schist
metamorphic
Red Coral
Corallium rubrum (Calcium Carbonate, CaCO3 with Carotenoid pigments)
Mineraloid (Organic Gemstone)
Garnet (Almandine)
Almandine Garnet (Fe3Al2(SiO4)3)
Mineral
Fossilized Shark Tooth
Carcharodon carcharias (fossilized) / Hydroxyapatite permineralized with silica or iron
sedimentary
Quartz Vein in Gneiss or Basalt
Milky Quartz (SiO2) within Metamorphic Host Rock
Metamorphic or Igneous with Mineral Inclusion
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 cement)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Pet Rock)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (with potential trace fossils)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2 (Silicon Dioxide)
mineral
Geode (Unbroken)
Silicon Dioxide (SiO2) usually as Microcrystalline Quartz or Chalcedony
sedimentary
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (SiO2 principal component)
sedimentary
Diamond
Diamond (C)
Mineral
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
mineral
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Sandstone (with potential Quartzite characteristics)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Chert / Flint Nodules in Limestone
Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)
sedimentary
Chalcedony in Limestone Host Rock
Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)
Mineral within Sedimentary Rock
Leopard Skin Jasper
Jasper (Silicon Dioxide with impurities), SiO2
sedimentary
Sandstone (Ferruginous)
Arenite (Fe-bearing Clastic Sedimentary Rock)
sedimentary
Zoisite with Ruby (Anyolite)
Zoisite – Ca2Al3(SiO4)3(OH) with inclusions of Ruby (Al2O3:Cr)
metamorphic
Fossilized Crab Carapace (Concretion)
Decapoda (fossil), typically preserved in calcite or siderite concretion
sedimentary
Picture Jasper
Silicified sedimentary or volcanic rock (primarily SiO2)
sedimentary
Red Sandstone Pebble
Arenite (primarily Quartz SiO2 with Hematite Fe2O3 staining)
sedimentary
Quartz Geode (Nodule)
Silicon Dioxide (SiO2)
sedimentary or igneous
Fluorite
Calcium Fluoride (CaF2)
mineral
Chalcedony (Common Opal variant or Agate)
Silicon Dioxide (SiO2)
mineral