Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Category
Mineral, Possibly Rock Fragment Containing A Mineral
Browse mineral, possibly rock fragment containing a mineral specimens identified by the Rock Identifier community.
Quartz Geode (River Cobble)
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Basalt
Basalt (Aphanitic Mafic Volcanic Rock)
igneous
Amethyst
Quartz (Silicon Dioxide, SiO2) with iron impurities
mineral
Quartz / Quartzite
Silicon Dioxide (SiO2)
mineral / metamorphic
Quartz on Basalt
Silicon Dioxide (SiO2) on Mafic Igneous Rock
Mineral on Igneous Rock
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Piddock bored rock (likely Mudstone or Shale)
Ichnofossil (Gastrochaenolites borings) in Fine-grained Sedimentary Rock
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Peacock Ore (Bornite or Iridescent Chalcopyrite)
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with oxidation
mineral
Basalt (with possible quartz veinsing)
Basalt
igneous
Slag (Industrial Glassy Byproduct)
Ferro-silicate Slag
Anthropogenic / Non-Natural
Limestone (Porous/Travertine variant)
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Mica Group Minerals
There isn't a single scientific name as 'Mica' refers to a group of phyllosilicate minerals. Common scientific names include Muscovite (KAl₂ (AlSi₃O₁₀)(OH)₂), Biotite (K(Mg,Fe)₃AlSi₃O₁₀(OH)₂), Phlogopite (KMg₃AlSi₃O₁₀(OH)₂), and Lepidolite (K(Li,Al)₃(Al,Si,Rb)₄O₁₀(F,OH)₂).
Mineral
Amethyst
Silicon dioxide with iron impurities (SiO2)
mineral
Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with inclusions of crocidolite or dumortierite
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of iron oxide)
metamorphic
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Magnetite Orthorthotropic Rock
Magnetite (Fe3O4)
mineral
Dragon Blood Jasper (Epidote with Piedmontite or Quartz)
Epidote-rich Quartzite / SiO2 with (Ca2(Al2,Fe)(Si2O7)(SiO4)O(OH))
metamorphic
Emerald In Matrix
Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium
mineral
Obsidian
Volcanic glass (SiO2-rich extrusive igneous rock)
igneous
Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Quartz / Quartzite
Quartz (Silicon Dioxide, SiO2)
metamorphic
Black Obsidian
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)
igneous
Dalmatian Stone (commonly Dyed)
Dalmatian Jasper (Peralkaline igneous rock)
igneous
Diorite
Intrusive Igneous Rock (Intermediate Composition)
igneous
Granite Pebble
Felsic Intrusive Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Granite
Granite (a common name for a felsic intrusive igneous rock)
Igneous Rock
Blue Quartz (specifically Dumortierite Quartz)
SiO2 (Silicon Dioxide) with inclusions of AlAl6BSi3O18 (Dumortierite)
mineral
Star Sapphire
Corundum (Al2O3) with Rutile inclusions
mineral
Quartzite
Quartzite
Metamorphic rock
Quartz-veined Schist (or Metasandstone)
Metamorphic Rock with Quartz Veining (SiO2)
metamorphic
![Turquoise (Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]) — mineral](https://media.rockidentification.com/8e928afb-bd26-4377-ab19-28fd017f7b9f-thumbnail.jpg)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
mineral
Granite
Granite (compositionally: Quartz, Feldspar, Mica)
igneous
Snowflake Obsidian
Volcanic glass with Cristobalite inclusions (70–75% SiO2)
igneous
Quartzite River Rock
Quartzite (primarily SiO2)
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Geode (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic