Sandstone (likely Greywacke variant)
Arenite
sedimentary
Category
Mineral Based Alloy (Anthropogenic)
Browse mineral based alloy (anthropogenic) specimens identified by the Rock Identifier community.
Learn about Mineral Based Alloy (Anthropogenic) in the encyclopedia
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Greenschist
Greenschist (Actinolite-Chlorite Schist)
metamorphic
Diorite (Salt and Pepper Rock)
Diorite
igneous
Emerald / Green Beryl
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Granite
Phaneritic Plutonic Igneous Rock (Granite)
igneous
Flower Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Bloodstone (Heliotrope)
Silicon dioxide (SiO2) with Hematite inclusions
mineral
Vesicular Basalt
Amygdaloidal Basalt (Mafic extrusive volcanic rock)
Igneous
Iron Meteorite (likely an Individual specimen)
Iron Meteorite (Group IAB, IIAB, IIIAB, etc., Fe-Ni alloy)
igneous
Sandstone (with potential trace fossils)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartz with Chlorite or Hornblende inclusions
Silicon dioxide (SiO2) with phyllosilicate or amphibole inclusions
metamorphic
Engineered Quartz Stone
Agglomerated Quartz (SiO2 + Polymer Resin)
mineral-based composite
Schist
Mica Schist
metamorphic
Granodiorite
Phaneritic Plutonic Intermediate-Felsic Rock
igneous
Granite
Granite
igneous
Sandstone with Quartz Vein
Arenite with Crystalline Silica (SiO2)
sedimentary
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium and/or Vanadium impurities
mineral
Granite
Granite (Phaneritic Quartz Monzonite)
igneous
Sandstone
Arenite
sedimentary
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Quartz Druzy on Agate
Silicon Dioxide (SiO2)
mineral
Man-made Green Quartz (Lab-grown or Treated)
Silicon Dioxide (SiO2) with artificial coloration
mineral
Sandstone
Arenite (compositionally various, primarily SiO2)
sedimentary
Sandstone Pebble (River Rock)
Arenite (primarily SiO2)
sedimentary
Basalt with Iron Oxides
Mafic Igneous Rock (Mafite)
igneous
Sandstone (Ferruginous)
Arenite with Iron Oxide cement
sedimentary
Quartz (likely Rose Quartz or Milky Quartz based on color)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Moss Agate
Silicon dioxide (SiO2) with inclusions
Mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Gneiss (Augen Gneiss)
Augen Gneiss
metamorphic
Blue Moss Agate
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Aura Quartz (Pink/Rose Aura Quartz)
Silicon Dioxide (SiO2) bonded with Platinum and/or Silver
mineral
Limestone with Iron Inclusions
Calcium Carbonate (CaCO3) with Hematite/Limonite
sedimentary
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
igneous
Basalt with Epidote/Chlorite
Amygdaloidal Basalt (SiO2 with (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)))
igneous
Mohave Turquoise (Composite/Stabilized)
Hydrated copper aluminium phosphate (CuAl6(PO4)4(OH)8·4H2O) with stabilizing resin and metallic inclusions
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Fossilized Sand Tiger Shark Tooth
Carcharias sp. (likely Carcharias taurus or Striatolamia)
fossil
Iron-stained Quartz (Gossan/Limonite-coated Quartz)
Silicon Dioxide (SiO2) with Hydrated Iron Oxides (FeO(OH)·nH2O)
mineral