Moonstone
Orthoclase (Potassium aluminum silicate - KAlSi3O8)
mineral
Category
Mineral (Synthetic)
Browse mineral (synthetic) specimens identified by the Rock Identifier community.
Emerald In Matrix (Quartz/Calcite)
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Emerald / Green Beryl
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Blue Lace Agate (with Amethyst Geode center)
Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony
mineral
Agate (specifically Waterline or Onyx-type Agate)
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Quartz Druze (Crystalline Quartz)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
SiO2 (Silicon Dioxide)
mineral
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide and mineral inclusions
sedimentary
Prase or Green Quartz
Silicon Dioxide (SiO2 with actinolite or chlorite inclusions)
Mineral
Black Sapphire (Basaltic Blue Sapphire)
Corundum (Al2O3)
mineral
Limonite (Iron Ore)
Limonite (an FeO(OH)·nH2O mineraloid, not a true mineral due to variable composition)
Mineral
Serpentine
Serpentinite (rock) containing serpentine minerals (e.g., Antigorite, Lizardite, Chrysotile)
Metamorphic rock
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Mica Schist
Mica Schist (primarily Muscovite and Quartz)
metamorphic
Diamond
Diamond (Pure Carbon - C)
mineral
Gold and Diamond
Native Gold (Au) and Diamond (C)
mineral
Raw Diamond
Carbon (C)
mineral
Quartz (Water-worn Pebble)
Quartz (Silicon Dioxide, SiO2)
mineral
Sodalite Syenite (popularly known as Yooperlite)
Sodalite-rich Syenite (composed of alkali feldspar and sodalite)
Igneous
Granite
Granite (phaneritic intrusive igneous rock consisting mainly of quartz, alkali feldspar, and plagioclase)
igneous
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Greenstone (Epidote/Chlorite-rich Metabasalt)
Greenschist / Epidosite (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
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
Garnet
Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3
Mineral
Magnetite / Hematite mix (Iron Ore)
Fe3O4 (Magnetite) / Fe2O3 (Hematite)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
N/A (Non-Geological Object)
N/A
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
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