Moss Agate
Silicon Dioxide with inclusions (SiO2 + Fe/Mn/Mg)
mineral
Category
Mineral (Man Modified)
Browse mineral (man modified) specimens identified by the Rock Identifier community.
Chert (and Flint variant)
Chert (SiO2)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Arenite (Sedimentary Rock)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Red)
Arenite (SiO2 with Fe2O3)
sedimentary
Shale
Mudstone/Shale
sedimentary
Sandstone
Arenite/Quartz Arenite
sedimentary
![Arfvedsonite in Quartz (also known as Eudialyte/Garnet Syenite variety) (Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2] within a silicate matrix) — igneous](https://media.rockidentification.com/a4026c5a-8968-420a-93d2-4bffc2cc7d5f-thumbnail.jpg)
Arfvedsonite in Quartz (also known as Eudialyte/Garnet Syenite variety)
Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2] within a silicate matrix
igneous
Olivine (Peridotite)
(Mg, Fe)2SiO4 (Magnesium Iron Silicate)
igneous
Note: Item is not a geological specimen
Guitar Components (Steel, Nickel, Plastic, Wood)
Synthetic/Consumer Product
Rhodonite with Manganese Oxides
Rhodonite (Mn,Fe,Mg,Ca)SiO3
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
sedimentary
Sandstone (Ferruginous)
Arenite (Fe-rich)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
![Turquoise (Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]) — mineral](https://media.rockidentification.com/81546651-32fa-4148-838a-c2bca7c29bba-thumbnail.jpg)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Iron-stained Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
mineral
Quartz (specifically Citrine or Yellow Quartzite pebble)
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Mineral
Milk Quartz (Tumbled Pebble)
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Quartz / Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (River Cobble)
Silicon Dioxide (SiO2)
mineral
Satin Spar (Gypsum)
Hydrous calcium sulfate (CaSO4·2H2O)
mineral
Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Quartz (Milky or Common Quartz)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium aluminum silicate)
mineral
Milky Quartz (Ferruginous variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral