Amazonite
K(AlSi3O8) - Lead-bearing Microcline (Tectosilicate)
mineral
Category
Mineral
Browse mineral specimens identified by the Rock Identifier community.
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Prehnite
Prehnite Ca2Al2Si3O10(OH)2
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Garnet (specifically Almandine)
Almandine - Fe3Al2(SiO4)3
metamorphic
Polished Black Obsidian
Volcanic Glass (70-75% SiO2)
igneous
Quartz / Quartzite
Silicon Dioxide (SiO2)
Mineral / Metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Aventurine (specifically a carved crescent moon)
Silicon Dioxide (SiO2) with inclusions
mineral
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
Mineral / Sedimentary
Quartz Vein in Host Rock (often Granite or Schist)
Silicon Dioxide (SiO2) within host matrix
mineral with metamorphic or igneous host
Psilomelane (Black Hematite varietal)
Barium Manganese Oxide (Ba,H2O)2Mn5O10
mineral
Charoite
Charoite (K(Ca,Na)2Si4O10(OH,F)·nH2O)
metamorphic
Blue Lace Agate
Cryptocrystalline Quartz (SiO2) with trace minerals
sedimentary
Sandstone
Sandstone (clastic sedimentary rock)
Rock
Quartz Vein in Rhyolite
Silicon Dioxide (SiO2) in extrusive igneous rock
igneous
Mica (Lepidolite or Muscovite)
Phyllosilicate mineral (KAl2(AlSi3O10)(OH)2 for Muscovite)
mineral
Himalayan Pink Salt
Halite (NaCl) with trace minerals (Iron, Magnesium, Potassium)
mineral
Tumbled Stone Collection (featuring Tiger's Eye, Rose Quartz, and Moss Agate)
Mixed Silicates and Oxides (predominantly SiO2 group minerals)
mineral
Celadonite in Basalt (Green Earth)
Celadonite (K(Mg,Fe2+)(Fe3+,Al)Si4O10(OH)2)
mineral
Sandstone (Fluvial Pebble)
Arenite
sedimentary
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
sedimentary
Red Sandstone
Arenite (with Iron Oxide)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Red Sandstone
Arenite (with Iron Oxide / Hematite cementation)
sedimentary
Red Sandstone
Clastic Terrigenous Sedimentary Rock (composed mostly of SiO2 with Fe2O3)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
sedimentary
Hematite
Iron (III) Oxide (Fe2O3)
mineral
Basalt with Granite Inclusions (Xenoliths)
Mafic igneous rock (Basalt) with Sialic minerals
igneous
Snowflake Obsidian
Spherulitic Obsidian (Amorphous Volcanic Glass with Cristobalite inclusions)
igneous
Druzy Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Amazonite
Microcline (KAlSi3O8) with trace Lead (Pb)
mineral
Amazonite
Microcline (KAlSi3O8 variant)
mineral
Amethyst
Silicon dioxide (SiO2) with iron impurities
mineral
Clear Quartz with Limonite
Silicon Dioxide (SiO2) with Hydrated Iron Oxides
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst and Titanium Treated Druzy
Silicon Dioxide (SiO2) with trace impurities including Iron
mineral