Limestone
Calcium Carbonate (CaCO3)
Category
Browse mineral with metamorphic or igneous host specimens identified by the Rock Identifier community.
Limestone
Calcium Carbonate (CaCO3)
Chert (Yellow/Tan Variety)
Chert (SiO2)
Chert (often found within Limestone)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Limestone (with potential fossil inclusions)
Calcium Carbonate (CaCO3)
Limestone (Brecciated/Recrystallized)
Calcium Carbonate (CaCO3)
Limestone (Grey and White specimens)
Calcium Carbonate (CaCO3)
Chert (Chalcedony/Flint)
Microcrystalline Quartz (SiO2)
Chert (Jasper type)
Microcrystalline Quartz (SiO2)
Chert (Iron-stained)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Geode (Chert or Quartz Nodule)
Silicon Dioxide (SiO2)
Chert (Basanite / Flint variety)
Microcrystalline Quartz (SiO2)
Clear Quartz (Rock Crystal)
Quartz (SiO₂)
Milky Quartz
Quartz (SiO2)
Kyanite
Kyanite (Al2SiO5)
Rose Quartz
Rose Quartz (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Magnetite
Magnetite (Fe3O4)
Shale
Fissile Mudstone (primarily composed of clay minerals and quartz grains)
Schist
Schist
Veined Pebble (likely a Quartz-Veined Pebble)
Pebble with Mineral Vein (e.g., Quartz Vein in a Chert/Mudstone Pebble)
Smoky Quartz
Smoky Quartz (SiO2)
Quartzite Pebble
Quartzite (SiO2)
Biotite Schist
Biotite-rich Schist [K(Mg,Fe)3AlSi3O10(F,OH)2]
Muscovite Mica
Muscovite (Potassium Mica) KAl2(AlSi3O10)(OH)2
Green Aventurine
Quartz with Fuchsine inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Granite
Granite (a felsic intrusive igneous rock)
Unakite
Unakite Epidosite (Granite with epidote and orthoclase)
Dragon's Breath (Mexican Opal Glass)
Artisan Foil Glass (SiO2 based)
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
Garnet in Matrix
Almandine Garnet (Fe3Al2(SiO4)3)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Epidote with Unakite characteristics
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz
Silicon dioxide (SiO2)
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Fossiliferous Chert (with Fossil Shells)
Silicon Dioxide (SiO2) with biogenic inclusions
Chert (White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Silicon Dioxide (SiO2)
Chert Nodules (Limonitic Chert)
Cryptocrystalline Quartz (SiO2) with Hydrated Iron Oxides
Lapis Lazuli
Lapis Lazuli (Rock composed primarily of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)