Quartz (Smoky/Grey Quartz Variant)
Silicon Dioxide (SiO2)
Category
Browse mineral like byproduct specimens identified by the Rock Identifier community.
Quartz (Smoky/Grey Quartz Variant)
Silicon Dioxide (SiO2)
Blue Apatite
Calcium Fluorophosphate (Ca5(PO4)3F)
Caribbean Calcite
Calcium Carbonate (CaCO3) with Aragonite (CaCO3)
Scoria (Lava Rock)
Vesicular Basalt / Scoria
Pink Granite (Potassium-rich Granite)
Phaneritic Felsic Igneous Rock (primarily SiO2, Al2O3, K2O)
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
Druzy Quartz on Quartz Base
Silicon Dioxide (SiO2)
Greenschist
Chlorite schist
Conglomerate
Conglomerate (a clastic sedimentary rock)
Obsidian
Volcanic glass (SiO2 - Silicon Dioxide with impurities)
Banded Gneiss
Gneiss (pronounced 'nice')
Granite
Plutonic felsic igneous rock
Fluorite (Polished Point/Tower)
Calcium Fluoride (CaF2)
Gneiss
Metamorphic Rock (Gneissic texture)
Limonite / Goethite Ironstone
FeO(OH)·nH2O (Hydrous iron oxide)
Fossilized Shark Teeth
Carcharhiniformes or Lamniformes species (common mineral: Fluorapatite/Ca5(PO4)3F)
Vesicular Basalt with Pyrite
Basalt (MgFe2+)(Si,Al)2O6 containing FeS2 inclusions
Fossilized Oyster Shell
Exogyra or Ostrea (Gryphaeidae/Ostreidae family)
Sandstone (Ferruginous)
Arenite (Fe-rich)
Raw Sapphire / Corundum
Corundum (Al2O3 - Aluminium oxide)
Biotite (Mica)
K(Mg,Fe)3AlSi3O10(OH,F)2
Pyrope Garnet
Magnesium aluminum silicate (Mg3Al2Si3O12)
Garnet
Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3
Sapphire (Raw/Rough)
Corundum (Al2O3)
Gneiss (High-grade Metamorphic Rock)
Gneiss
Sandstone (with Limonite staining)
Arenite (primarily SiO2 with FeO(OH)·nH2O)
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
Chrysocolla with Malachite
Cu2-xAlx(H2-xSi2O5)(OH)4%CnH2O (Chrysocolla)
Shark Tooth Fossil
Elasmobranchii dentition (fossilized)
Granite
Intrusive igneous rock
Granite
Intrusive Felsic Igneous Rock
Granite Pebble
Granite (Felsic Plutonic Rock)
Quartz (vein quartz)
SiO2 (Silicon Dioxide)
Lepidolite
K(Li,Al)3(Al,Si,3O10)(F,OH)2
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
Rose Quartz
Silicon dioxide (SiO2)
Kaolinite (Kaolin)
Kaolinite (Al2Si2O5(OH)4)
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
Galena
Lead(II) sulfide (PbS)
Green Sandstone
Glauconitic Sandstone
Turquoise with Pyrite
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O] with Iron Pyrite (FeS2)
Yellow Sapphire (Corundum)
Corundum (Aluminum Oxide, Al2O3)