Banded Agate (Agatized Geode Slice)
Silicon Dioxide (SiO₂)
mineral
Category
Sedimentary Or Igneous
Browse sedimentary or igneous specimens identified by the Rock Identifier community.
Dendritic Agate
Silicon Dioxide (SiO2) with manganese/iron inclusions
mineral
Quartz (Milky or Smoky Quartz)
Silicon Dioxide (SiO2)
mineral
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Red Hematite
Iron(III) Oxide (Fe2O3)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Bull Quartz)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz (Milky/Clear)
Silicon Dioxide (SiO2)
mineral
Clear Quartz Cluster
Quartz (Silicon Dioxide - SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Fluorite
Calcium fluoride (CaF2)
mineral
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Gneiss (with Quartz and Biotite Mica)
Gneiss
metamorphic
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Clear Quartz (Druzy)
Crystalline Silicon Dioxide (SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Quartz / Rock Crystal
Silicon Dioxide (SiO2)
mineral
Clear Quartz Cluster
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
mineral
Yellow Chalcedony (likely carnelian or yellow agate)
Silicon Dioxide (SiO₂)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral