Veined Quartz
SiO2 (Silicon Dioxide)
Mineral
Category
Mineral (Processed Metal)
Browse mineral (processed metal) specimens identified by the Rock Identifier community.
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Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Extrusive)
igneous
Red Jasper
Microcrystalline Quartz (SiO2) with iron oxide inclusions
sedimentary
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Druzy/Macro-crystalline)
Silicon Dioxide (SiO2)
mineral
Pink Dyed Agate Geode Slice
Cryptocrystalline Quartz (SiO2)
mineral
Banded Agate (Agatized Geode Slice)
Silicon Dioxide (SiO₂)
mineral
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Bicolor or Tricolor Tourmaline
Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4)
mineral
Sedimentary rock with quartz veining
Laminated siltstone or mudstone with hydrothermal quartz veins
sedimentary
Dalmatian Stone
Dalmatian Jasper / Aplite
igneous
Snowflake Obsidian
Vitreous volcanic silicate (SiO2 with Cristobalite inclusions)
igneous
Tiger's Eye (Nodule/Tumbled)
Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)
metamorphic
Gastropod Fossil (Snail Stone or Steinkern)
Class Gastropoda (Calcium Carbonate - CaCO3 / Silica - SiO2 replacing original shell)
sedimentary
Porphyritic Igneous Rock / Granite or Rhyolite Porphyry
Porphyritic intrusive/extrusive igneous rock
igneous
Jasper (specifically Polychrome or Desert Jasper)
Silicon Dioxide with impurities (SiO2)
Mineral
Greenstone
Protolith of basalt, diabase, or gabbro; often contains minerals like chlorite, actinolite, and epidote
metamorphic
Amygdaloidal Basalt
Amygdaloidal Basalt (Ca-rich Plagioclase, Pyroxene, and Olivine)
igneous
Petrified Wood
Silicified Wood (SiO2)
fossil
Gneiss
Gneiss
metamorphic
Blue Slag Glass
Ferro-silicate glass (Slag)
igneous (man-made/industrial)
Flint / Chert
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Titanium Coated Quartz (Aura Quartz)
Silicon dioxide with titanium vapor deposition (SiO2)
mineral
Aventurine
Quartz (SiO2) with fuchsite inclusions
mineral
Tiger's Eye
Silicon Dioxide (Quartz pseudomorph after crocidolite), SiO2
mineral
Quartz Pebble (Geode Nodules / Stream-Rounded Quartz)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz (Tumbled/Water-worn Quartz)
Silicon Dioxide (SiO2)
mineral
Black Tourmaline (Schorl)
NaFe2+3Al6(BO3)3Si6O18(OH)4
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Mica Sand / Vermiculite
Phyllosilicate group (typically Biotite or Muscovite)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Bloodstone
Heliotrope (Chalcedony with inclusions of Hematite) - SiO2
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Dyed Magnesite (Howlite imitation)
Magnesium carbonate (MgCO3) with dye
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Larimar (Pectolite)
NaCa2Si3O8(OH)
mineral