Granite / Igneous Rock Specimen
Phaneritic Igneous Rock
igneous
Category
Non Geological
Browse non geological specimens identified by the Rock Identifier community.
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Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Porphyritic Basalt (Drill Core)
Porphyritic Basalt with Plagioclase Phenocrysts
igneous
Quartz (in matrix)
Quartz (SiO₂)
mineral
Unidentified dark pebble
Undetermined; possibly polished basalt, chert, or iron-rich stone
mineral
Small brown-gray mineral fragment
Indeterminate; possibly weathered quartz-, feldspar-, or iron-oxide-bearing rock
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Agate Nodule
Silicon dioxide (Chalcedony/Quartz), SiO2
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Mixed Gemstone and Mineral Collection
Mixed Silica and Carbonate minerals (SiO2, CaSO4·2H2O, etc.)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Psilomelane (Black Hematite varietal)
Barium Manganese Oxide (Ba,H2O)2Mn5O10
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
White Quartz (Mushroom Carving)
Quartz (Silicon Dioxide - SiO2)
mineral
Gold
Native Gold (Au)
mineral
Quartz (Granular)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Mixed Crushed Stone
Aggregate (varied mineral composition)
igneous and sedimentary mixture
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Fossil Coral
Scleractinia (fossilized calcium carbonate)
sedimentary
Basalt
Basalt
Igneous
Greenschist
Greenschist (Chlorite-actinolite schist)
metamorphic
Pink Aragonite
CaCO3
mineral
Chert (specifically a Lithic Flake)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
N/A (The provided image is a storyboard/digital document)
N/A
Tumbled Stone
Silicon dioxide / Various silicates
mineral
Black Onyx
Chalcedony (SiO2)
gemstone
White Quartz Beads
Silicon Dioxide (SiO2)
mineral
Quartz (Rose Quartz)
Silicon Dioxide (SiO2)
mineral
Flint / Chert Nodules in Limestone
Cryptocrystalline Quartz (SiO2) within Carbonate Rock
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Iceland Spar (Optical Calcite)
Calcite (CaCO3)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral