Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Category
Mineral Like Byproduct (Technogenic)
Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.
Learn about Mineral Like Byproduct (Technogenic) in the encyclopedia
View all →
Green Chalcedony (Batu Akik)
Silicon Dioxide (SiO2)
gemstone
Granite
Granite (Felsic Plutonic Rock)
igneous
Gneiss
Gneiss
metamorphic
Sandstone (Banded)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Granite with Quartz Vein
Phaneritic intrusive igneous rock (Felsic)
igneous
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Petrified Wood
Silicified Wood
fossil
Sandstone (Iron-stained)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
sedimentary
Malachite
Malachite (Cu2CO3(OH)2)
mineral
Pink Granite
Phaneritic Felsic Igneous Rock (high K-feldspar)
igneous
Fossil Coral
Hexagonaria or Rugose Coral (Fossilized Calcium Carbonate / Silica)
fossil
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Limonite (Hydrated Iron Oxide / Bog Iron)
FeO(OH)·nH2O
Mineral (Sedimentary context)
Amazonite
Microcline feldspar (KAlSi3O8)
mineral
Limonite Concretion
Limonite (Hydrated iron(III) oxide-hydroxide) FeO(OH)·nH2O
sedimentary
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Ironstone Concretion (Coprolite-like)
Goethite/Hematite Siderite Spheroid (FeCO3 or FeO(OH))
sedimentary
Amethyst
Silicon dioxide (SiO2) with iron impurities
mineral
Chert / Flint (Yellow Jasper Variant)
Microcrystalline Quartz (SiO2 with Iron Oxide impurities)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
High-grade metamorphic rock (Gneiss)
metamorphic
Mica (Biotite or Phlogopite Buchsam)
Silicate Mineral (Phyllosilicate family)
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Obsidian and Phantom Quartz
Volcanic Glass (SiO2 + MgO + Fe3O4) and Crystalline Quartz (SiO2)
igneous and mineral
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic silicate with secondary mineral inclusions)
Igneous
Blue Apatite
Apatite, Ca5(PO4)3(F,Cl,OH)
mineral
Rutilated Quartz Bracelet
Quartz (Silicon Dioxide, SiO2) with inclusions of Rutile (Titanium Dioxide, TiO2)
gemstone
Fossiliferous Rock (likely Dinosaur Fossil in Matrix)
Permineralized Vertebrate Fossil (Calcium Carbonate/Silica replaced bone material)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Black Marble
Recrystallized Calcite (CaCO3)
metamorphic
Sedimentary Pebble
Sedimentary Rock Fragment
sedimentary
Biotite (Mica)
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Sandstone (Ferruginous/Banded)
Clastic Terrigenous Sandstone (SiO2 with Fe2O3 cement)
sedimentary
Limonite (Ironstone)
FeO(OH)·nH2O (Hydrous ferric oxides)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Conglomerate (River Rock)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartz Druzy Geode
Silicon Dioxide (SiO2) - Crystalline Variety
mineral
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Ferruginous Quartz
Quartz (Silicon Dioxide) - SiO2 with Iron Oxide inclusions
mineral