Rough Quartz (with Feldspar inclusions)
Silicon Dioxide (SiO2)
Category
Browse mineral (treated) specimens identified by the Rock Identifier community.
Rough Quartz (with Feldspar inclusions)
Silicon Dioxide (SiO2)
Granitic Pegmatite
Pegmatitic Granite
Ironstone Concretion (Limonite/Goethite)
Ironstone (primarily FeO(OH)·nH2O)
Basalt with Calcite Veins
Aphanitic mafic volcanic rock with CaCO3 inclusions
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
Turquoise
Turquoise - CuAl6(PO4)4(OH)8·4H2O
Ironstone Concretion (Moqui Marble type)
Ferruginous Concretion (Fe2O3 / FeO(OH))
Sandstone (specifically Lithic or Quartz Arenite)
Arenite (composed primarily of SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 oxides)
Sandstone (Graywacke type)
Clastic Sedimentary Rock (Lithic Sandstone)
Malachite
Copper carbonate hydroxide, Cu2CO3(OH)2
Turquoise
Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O
Sandstone
Arenite (primarily SiO2)
Limonite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
Pyrite on Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
Red Sandstone Pebble
Arenite (primarily Quartz SiO2 with Hematite Fe2O3 staining)
Moss Agate
Silicon Dioxide (SiO2) with mineral inclusions
Included Quartz (Garden Quartz / Lodolite)
Quartz (SiO2) with various mineral inclusions
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
Septarian Nodule
Septarian Concretion (CaCO3 with Siderite/Limonite streaks)
Botryoidal Chalcedony
Silicon Dioxide (SiO2)
Septarian Nodule
Septarian Concretion
Azurite-Malachite (often called Azerite Malachite or Azurmalachite)
Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2CO3(OH)2)
Chrysocolla in Matrix
Hydrated copper silicate - (Cu,Al)2H2Si2O5(OH)4·nH2O
Amazonite (likely mixed with other feldspars/minerals)
Amazonite is a variety of Microcline, which is a tectosilicate mineral, formula KAISi3O8. The mixed beads could include other feldspars or quartz.
Chakra Stone Tower (Composite Multi-Mineral)
Crystalline Silicon Dioxide composite (SiO2) with various inclusions
Gneiss
Gneiss
Amygdaloidal Basalt with Quartz/Calcite Inclusions
Amygdaloidal Basalt (SiO2 / CaCO3 inclusions)
Vesicular Basalt (Amygdaloidal)
Amygdaloidal Basalt
Fluorite (Purple variety)
Calcium Fluoride (CaF2)
Shale or Siltstone
Sedimentary Clastic Rock (Variable mineral composition including quartz and clay minerals)
Amazonite
Potassium aluminum silicate (KAlSi3O8)
Tanzanite (Rough)
Blue Zoisite (Ca2Al3(SiO4)3(OH))
Malachite and Azurite on Matrix
Cu2CO3(OH)2 (Malachite) / Cu3(CO3)2(OH)2 (Azurite)
Peacock Ore
Bornite (Cu5FeS4)
Rutilated Quartz
Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions
Amethyst
Amethyst (Silicon Dioxide with iron impurities), SiO2
Amethyst
Amethyst (SiO2 with Iron impurities)
Moldavite
Tektite (Impact Glass), ~80% SiO2 + Al2O3
Stichtite in Serpentine (Atlantasite)
Mg6Cr2CO3(OH)16·4H2O in Mg3Si2O5(OH)4
Vanadinite on Matrix
Vanadinite (Pb5(VO4)3Cl)
Chalcedony (Yellow Agate)
Cryptocrystalline Quartz (SiO2)