Quartz
Silicon Dioxide (SiO2)
mineral
Category
Sedimentary To Metamorphic
Browse sedimentary to metamorphic specimens identified by the Rock Identifier community.
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Quartz
Silicon Dioxide (SiO2)
mineral
Gravel / Crushed Stone
Aggregate (mixed mineral rock fragments)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz fragment (Pebble)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Pyrite (FeS2)
mineral
Common Opal
SiO2·nH2O (Hydrated Silicon Dioxide)
mineraloid
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Pink Feldspar
Potassium Feldspar (Microcline or Orthoclase), KAlSi3O8
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Raw Calcite
Calcite (Calcium Carbonate - CaCO3)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Clear Quartz / Rock Crystal
Silicon Dioxide (SiO2)
mineral
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Crystalline Silicon Dioxide (SiO2)
gemstone
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Garnet (Polished)
Nesosilicate (Group formula: X3Y2(SiO4)3)
gemstone
Pyrite
Iron Sulfide (FeS2)
mineral
Blue Apatite
Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Mixed Mineral and Fossil Collection
Multi-specimen assemblage (SiO2, CaCO3, FeS2, etc.)
mineral
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Hematite
Hematite (Α-Fe2O3)
mineral
Onyx Marble (Banded Calcite)
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Blue Calcite
Calcium Carbonate (CaCO3)
mineral