Quartzite
Quartzite (Primary mineral: SiO2)
metamorphic
Category
Mineral (Native Element Alloy)
Browse mineral (native element alloy) specimens identified by the Rock Identifier community.
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Quartzite
Quartzite (Primary mineral: SiO2)
metamorphic
Quartzite
Quartzite (Primary mineral: SiO2)
Metamorphic
Quartzite
Quartzite (Primary mineral: SiO2)
metamorphic
Quartzite
Quartzite (Primary mineral: SiO2)
metamorphic
Red Jasper
Jasper (Silicate mineral - SiO2)
sedimentary
Abalone Shell (Nacre)
Aragonite (CaCO3) - Biogenic Mineral
mineral
Jasper
Jasper (Silicate mineral, SiO2)
sedimentary
Fossilized Shark Tooth (Otodus obliquus)
Otodus obliquus (Mineral: Fluorapatite)
mineral
Aventurine (Tan/Cream colored)
Quartz (SiO2) with mineral inclusions
mineral
Quartzite
Quartzite (Primary mineral: SiO2)
metamorphic
Quartzite
Quartzite (Primary mineral: SiO2)
metamorphic
Quartzite
Quartzite (Primary mineral: SiO2)
metamorphic
Basalt (Vesicular or Porphyritic River Pebble)
Mafic Volcanic Rock (Aphanitic to Porphyritic Basalt)
igneous
Yellow Jade (often Serpentine or Dolomite)
Primarily Serpentine (Mg3Si2O5(OH)4) or Dolomite (CaMg(CO3)2), though the term 'yellow jade' is also sometimes applied to varieties of true nephrite or jadeite.
Mineral, often a rock given its aggregate nature
Pink quartz (likely rose quartz)
Quartz, silicon dioxide (SiO₂)
mineral
Polished rose quartz
Rose quartz (quartz), SiO₂
mineral
Rose quartz
Quartz, silicon dioxide (SiO₂), pink variety
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Green Tourmaline (Verdelite)
Elbaite (Complex Borosilicate: Na(Li,Al)3Al6(BO3)3Si6O18(OH)4)
mineral
Amethyst
Amethyst (Silicon Dioxide - SiO2 with ferric iron impurities)
mineral
Milky Quartz (Gold-bearing Prospecting Specimen)
Silicon Dioxide (SiO2)
mineral
Yellow Chalcedony / Carnelian
Silicon Dioxide (SiO2)
mineral
Copper Ore Bearing Rock
Host rock with secondary copper minerals (such as Malachite, Azurite, and Chrysocolla)
mineral
Banded Siltstone
Banded Siltstone / Laminated Siltstone
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Sandstone with Iron Staining
Arenite with Limonite/Hematite inclusions (SiO2 + Fe2O3/FeO(OH))
sedimentary
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Rose Quartz Chips
Quartz (Silicon Dioxide - SiO2)
mineral
![Turquoise (Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]) — mineral](https://media.rockidentification.com/98a2a2f8-be01-4831-a944-de6fd3830399-thumbnail.jpg)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Veined Basalt River Stone
Basalt with Calcite or Quartz veining
igneous
Obsidian
Volcanic Glass (SiO2 rich)
Igneous
Dalmatian Stone
Peralkaline Feldsphathic Igneous Rock
igneous
Geode (Unopened)
Silica-rich Concretion (primarily SiO2)
sedimentary
Moqui Marble (Concretion)
Iron Oxide Concretion (Hematite/Goethite)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Azurite and Malachite
Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2(CO3)(OH)2)
mineral