Quartzite Pebble
Quartzite (SiO2)
Category
Browse marble specimens identified by the Rock Identifier community.
Quartzite Pebble
Quartzite (SiO2)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Quartzite
Quartzite (SiO2)
Calcite
Calcium Carbonate (CaCO3)
Quartzite
Quartzite (primarily SiO2)
Calcite
Calcium Carbonate (CaCO3)
Aquamarine with Ruby Accent
Beryllium Aluminum Silicate (Be3Al2Si6O18) with Aluminum Oxide (Al2O3)
Ruby (varieties of Corundum)
Aluminum oxide (Al2O3) with Chromium traces
Blue Apatite
Fluorapatite / Ca5(PO4)3F
Quartzite
Quartzite (SiO2)
Lapis Lazuli
Lazurite-rich metamorphic rock (approx. (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Lapis Lazuli (polished cabochon)
Lazurite-rich rock (Na8[Al6Si6O24]n(S,Cl,SO4,OH)2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Lapis Lazuli (Fragment)
Lazurite-rich metamorphic rock
Moqui Marble
Ironstone Concretion (Ferruginous sandstone)
Moqui Marble
Iron Oxide Concretion (Fe2O3 / FeO(OH))
Zebra Marble
Metamorphosed Alabaster/Limestone (CaCO3)
Moqui Marble
Iron Oxide Concretion (Limonite/Hematite shell with Sandstone core)
Zebra Marble
Recrystallized Calcite (CaCO3) with Carbonaceous Impurities
Moqui Marble
Iron Oxide Concretion
White Marble
Recrystallized Calcite (CaCO3)
Black Marble
Recrystallized Calcite (CaCO3)
White Marble
Metamorphosed Limestone (principally CaCO3)
Ruby in Marble
Corundum (Al2O3) in Calcite (CaCO3) matrix
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
White Marble (Whiskey Stone)
Recrystallized Calcite / Marble (CaCO3)
Quartzite
Quartzite
Orange Calcite
Calcium Carbonate (CaCO3)
Serpentine
Antigorite, Lizardite, and Chrysotile (Mg3Si2O5(OH)4)
Ironstone Concretion (Limonite/Goethite)
Iron oxide concretion (contains FeO(OH)·nH2O)
Quartzite
Metamorphosed Quartz Sandstone
Quartzite
Quartzite (primarily SiO2)
Red Quartzite / Ferruginous Quartz
Quartzite (primarily Silicon Dioxide, SiO2 with Iron Oxide impurities)
Quartzite River Stone
Metamorphic Quartzite (primarily SiO2)
Moqui Marble
Ironstone Concretion (Goethite/Hematite layered over Sandstone)
Yellow Calcite
Calcium Carbonate (CaCO3)
Quartzite
Quartzite (SiO2)
Quartzite Pebble (River Rock)
Quartzite (primarily SiO2)
Glazed Ceramic Tile
Fused Silicate-Clay composite
Limestone
Calcium Carbonate (CaCO3)
Honey Calcite
Calcium Carbonate (CaCO3)