Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Category
Browse sedimentary or igneous specimens identified by the Rock Identifier community.
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Gneiss (Banded Gneiss)
Gneiss
Chalcedony (Smoky Quartz or Agate nodule fragment)
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Yellow Chalcedony (Agate)
Silicon Dioxide (SiO2)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Mica Schist
Schist (Muscovite/Biotite Schist)
Clear Quartz Fragment
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Agate (Carnelian-like)
Chalcedony (Silicon Dioxide, SiO2)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz (Agate or Chert pebble)
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Leopard Skin Jasper
Silicon Dioxide (SiO2) with various inclusions
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Pumice or Tufa/Travertine
Pumice (if igneous) or Calcareous Tufa (if sedimentary)
Jasper, Agate, Quartz Mix (Polished Beads)
SiO₂ (Silicon Dioxide) for Quartz. Jasper and Agate are cryptocrystalline varieties of Quartz.
Quartz (Gravel Pebble)
Silicon Dioxide (SiO2)
Chalcedony (River Agate)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz with Matrix
Quartz (Silicon Dioxide, SiO2)
Gneiss
Gneiss
Pyrite
Iron Sulfide (FeS2)
Fluorite
Calcium Fluoride (CaF2)
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Clear Quartz
Silicon Dioxide (SiO2)
Banded Gneiss
Gneiss (Metamorphic Rock)
Gneiss with Quartz Vein
Gneiss containing Quartz (SiO2) filler
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Carnelian (Red Chalcedony)
Silicon Dioxide (SiO2)
Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Clear Quartz Crystal Cluster
Silicon Dioxide (SiO2)
Magnetite (Small Granule)
Magnetite (Fe3O4)
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Specular Hematite
Iron(III) oxide (Fe2O3)