Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Category
Mineral (Biogenic)
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White Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral
Blue Quartzite (Dyed)
Silicon Dioxide (SiO2) with inclusions
metamorphic
Quartz / Calcite Vein Rock
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)
mineral
Quartz in Matrix (possibly with Biotite or Hornblende)
Quartz (Silicon Dioxide, SiO2) in Granitic Matrix
igneous
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Common or Milky)
Silicon Dioxide (SiO2)
mineral
Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Vesicular Basalt with Lichen
Vesicular Basalt
igneous
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Yellow Aventurine (Yellow Quartzite)
Silicon Dioxide (SiO2) with inclusions
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Grain/Pebble)
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in matrix
Mineral in Metamorphic/Igneous Host
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Blue Quartzite (Aventurine variety)
Silicon Dioxide (SiO2) with inclusions of Dumortierite or Magnesio-riebeckite
metamorphic
Limonite (Iron Stone/Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Chrysocolla
Chrysocolla (Cu,Al)2H2Si2O5(OH)4·nH2O
Mineral
Ferruginous Sandstone (with possible Epidote/Chlorite coloring)
Sandstone (SiO2 dominated with Fe2O3 staining)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
![Native Copper with Malachite and Chrysocolla (Native Copper (Cu) with Malachite [Cu2CO3(OH)2] and Chrysocolla [(Cu,Al)2H2Si2O5(OH)4·nH2O]) — mineral](https://media.rockidentification.com/6ef339a6-a6eb-4aa3-8f16-7b2b668937bc-thumbnail.jpg)
Native Copper with Malachite and Chrysocolla
Native Copper (Cu) with Malachite [Cu2CO3(OH)2] and Chrysocolla [(Cu,Al)2H2Si2O5(OH)4·nH2O]
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Granite Gneiss
Gneiss (derived from granitic protolith)
metamorphic
Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite)
Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)
mineral
Beryl (likely Emerald or Aquamarine in matrix)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Amphibolite
Amphibolite
metamorphic
Banded River Rock / Gneiss (highly weathered)
Gneiss
Metamorphic rock
Quartz Geode (Nodule)
Silicon Dioxide (SiO2)
sedimentary or igneous
Sandstone with Concretions / Liesegang Rings
Arenite with iron oxide banding
sedimentary
Greenstone / Greenschist
Chlorite schist / Epidiorite
metamorphic
![Malachite (Copper carbonate hydroxide [Cu2CO3(OH)2]) — mineral](https://media.rockidentification.com/f3c2536c-d611-48f2-b746-292a298527f0-thumbnail.jpg)
Malachite
Copper carbonate hydroxide [Cu2CO3(OH)2]
mineral
Red Sandstone
Arenite (composed primarily of Quartz and Iron Oxide)
sedimentary
Turquoise
Hydrated phosphate of copper and aluminum - CuAl6(PO4)4(OH)8·4H2O
mineral
Sandstone (Ferruginous)
Arenite (with Iron Oxides)
sedimentary
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing Phyllosilicate)
mineral
Red Sandstone
Arenite (primarily Quartz with Hematite cement)
sedimentary
Red Sandstone
Sandstone (principally Quartz with Iron Oxide coating)
sedimentary
Red Sandstone (Hematitic)
Clastic sedimentary rock (SiO2 with Fe2O3 inclusions)
sedimentary
Limonitic Sandstone (Stained Sandstone)
Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining
sedimentary
Sandstone
Arenicola (comprising mostly Quartz, SiO2)
sedimentary