Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Category
Mineral (Treated)
Browse mineral (treated) specimens identified by the Rock Identifier community.
Garnet
Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3
Mineral
Garnet Schist
Almandine Garnet Schist (Fe3Al2(SiO4)3 in Schistose matrix)
metamorphic
Garnet-Bearing Gneiss
Almandine-Garnet Gneiss
metamorphic
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Hag Stone
Perforated Sedimentary Rock (typically Limestone or Sandstone)
sedimentary
Gossan with Copper Carbonate (Chrysocolla/Malachite)
Ferruginous Oxide (Gossan) with Cu2CO3(OH)2 (Malachite) or (Cu,Al)2H2Si2O5(OH)4 (Chrysocolla)
Mineral/Sedimentary Interface
Granite
Granite (Mainly Quartz SiO2 and Feldspar KAlSi3O8)
igneous
Quartzite River Rock
Quartzite (primarily SiO2)
metamorphic
Prehnite on Basalt
Prehnite - Ca2Al(AlSi3O10)(OH)2
mineral
Chrysocolla on Quartz
Chrysocolla (Cu2−xAlx(H2−xSi2O5)(OH)4·nH2O) often associated with Quartz (SiO2)
mineral
Moss Agate
Silicon Dioxide (SiO2) with mineral inclusions of hornblende or chlorite
Mineral (variety of Chalcedony)
Kimberlite
Kimberlite
igneous
N/A (The provided image is a storyboard/digital document)
N/A
Sandstone (with potential iron-oxide staining)
Arenite (primarily SiO2)
sedimentary
Snowflake Obsidian
Volcanic glass containing Cristobalite (SiO2)
igneous
Iron Meteorite (Individual)
Siderite (composed of Kamacite and Taenite minerals)
igneous
Dalmation Stone
Peralkaline Rock (mixed silicate minerals)
igneous
Ammonite Fossil (Polished Section)
Ammonoidea (typically mineralized with Calcite CaCO3)
sedimentary
Greenschist (Greenstone)
Greenschist
metamorphic
Granite (including Pegmatite variants)
Phaneritic Plutonic Rock (composed primarily of Quartz SiO2, Feldspar KAlSi3O8, and Biotite/Muscovite mica)
Igneous
Shale or Argillite
Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)
Sedimentary or Metamorphic (low grade)
Sandstone
Arenite (Sedimentary rock composed of sand-sized grains, primarily SiO2)
sedimentary
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Sandstone
Arenite (predominantly SiO2)
sedimentary
Greenschist (Greenstone River Pebble)
Greenschist (Chlorite Schist)
metamorphic
Blue Quartzite
Quartzite (specifically a variety enriched with blue-coloring minerals)
Metamorphic Rock
Dinosaur Bone (Fossilized)
Permineralized Bone (CaCO3 or SiO2 after Hydroxylapatite)
sedimentary
Labradorite
Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8
mineral
Nephrite (a form of Jade)
Nephrite (a variety of the mineral actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)
Mineral
Limonite-pseudomorph after Pyrite (Prophecy Stone)
Goethite and Limonite secondary minerals (FeO(OH)·nH2O) replacing Pyrite (FeS2)
mineral
Granite
Granite (a plutonic igneous rock composed of quartz, feldspar, and mica)
igneous
Quartz with Hematite Staining
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) inclusions
mineral
Diamond
Carbon (C)
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Diamond
Diamond (C)
mineral
Granite
Phaneritic Felsic Igneous Rock (Main minerals: SiO2, KAlSi3O8, NaAlSi3O8)
igneous
Green Aventurine
Aventurine (variety of Quartz - SiO2)
Mineral_Rock
Schist
Crystalline Metamorphic Rock (Schistose)
metamorphic
Basalt (with possible mineral veining)
Basalt (Aphanitic Mafic Igneous Rock)
Igneous
Quartzite with Iron Mineral Banding
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) staining
metamorphic