Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Category
Sedimentary And Igneous
Browse sedimentary and igneous specimens identified by the Rock Identifier community.
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Hematite
Hematite (Α-Fe2O3)
mineral
Potassium Feldspar and Quartz
KAlSi3O8 (Potassium Feldspar) and SiO2 (Quartz)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Chalcedony (Agate/Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Pyrite in Matrix (often with Chalcopyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Quartz Fragment
Silicon Dioxide (SiO2)
mineral
Calcite (Optical or Clear Calcite)
Calcium Carbonate (CaCO3)
mineral
Quartz
Silicon dioxide (SiO2)
Mineral
Educational Geologic Collection
Mixed Mineral and Rock Collection (Various compositions)
mineral
Granite or Granitic Gneiss
Granitoid / Gneiss
Igneous / Metamorphic
Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Pyrite in Matrix
Iron Disulfide (FeS2)
mineral
Magnetite (Loadstone candidate)
Iron(II,III) oxide (Fe3O4)
mineral
Dalmatian Stone
Dalmatian Jasper (Peralkaline Quartz-Feldspar Rock)
igneous
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Pyrite
Iron Pyrite (FeS2)
Mineral
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Quartz Druze (Crystalline Quartz)
Silicon Dioxide (SiO2)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Banded Sandstone (Water-worn Pebble)
Arenite with mineral banding
sedimentary
Quartz (Variety: Agate / Chalcedony)
Silicon Dioxide (SiO2)
sedimentary
Epidote-bearing Granite (Unakite-like)
Epidotized Granite
igneous
Dalmatian Stone
Dalmatian Jasper (Aplitic Perthite)
igneous
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
Pyrite Cube in Matrix
Iron Sulfide (FeS2)
mineral
Gravel (Crushed Stone Aggregates)
Mixed Siliciclastic / Carbonate Aggregate
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Agate (Carnelian Agate with Quartz Matrix)
Silicon Dioxide (SiO2)
mineral
Quartz Crystal (Geode Fragment)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz / Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Gold
Native Gold (Au)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral