Aragonite (Onyx Marble)
Calcium Carbonate (CaCO3), Orthorhombic crystal system
mineral
Category
Mineral (Silicate Variety)
Browse mineral (silicate variety) specimens identified by the Rock Identifier community.
Slag Glass
Vitreous Silicate Residue
industrial byproduct (anthropogenic rock)
Green Jasper (Banded Jasper)
Silicon Dioxide (SiO2) with impurities
sedimentary
Lazulite
Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Amazonite
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Felted Quartz / Chlorite Quartz
Chlorite included Quartz (SiO2 + (Mg,Fe)3(Si,Al)2O5(OH)4)
mineral
Biotite (Mica)
Biotite - K(Mg,Fe)3AlSi3O10(F,OH)2
mineral
Limonite (Iron Ore)
Limonite (unstructured hydrated iron(III) oxide-hydroxides, often FeO(OH)·nH2O)
mineral
White Chalcedony (likely Common Opal or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
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
Hemimorphite on Limonite Gossan
Hemimorphite (Zn4Si2O7(OH)2·H2O) on Limonite matrix
mineral
Howlite
Howlite (Ca2B5SiO9(OH)5)
mineral
Chondrite Meteorite Fragment
Ordinary Chondrite (L or H type)
igneous
Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Epidote in Quartz (Unakite-like specimen)
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Quartz (SiO2)
metamorphic
Ruby in Kyanite
Corundum in Disthene (Al2SiO5 + Al2O3)
metamorphic
White Topaz
Aluminum Silicate Fluoride Hydroxide, Al2SiO4(F,OH)2
mineral
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
mineral
Sandstone
Arenite
sedimentary
Pink Quartz (Rose Quartz)
Silicon Dioxide (SiO2)
mineral
Slag (Industrial Glassy Byproduct)
Ferro-silicate Slag
Anthropogenic / Non-Natural
Sandstone
Arenite
sedimentary
Yellow Beryl (Heliodor)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Bauxite
Bauxite (Al(OH)3, AlO(OH))
sedimentary
Biotite (Mica)
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Obsidian
Volcanic glass (SiO2-rich amorphous silicate)
igneous
Dalmation Stone
Peralkaline Rock (mixed silicate minerals)
igneous
Schorl (Black Tourmaline) in Quartz and Feldspar
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
mineral
Aquamarine
Beryllium Aluminum Silicate (Be3Al2Si6O18)
mineral
Slag
Anthropogenic Iron Silicate Glass
mineral
White Moonstone (Scolicite or White Feldspar var. )
Lattice-structure Silicate (KAlSi3O8)
mineral
Orthoclase Feldspar
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Beryl (likely Emerald or Aquamarine in matrix)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
White Zircon
Zircon (Zirconium silicate, ZrSiO4)
mineral
Beryl (likely var. Aquamarine or Goshenite) in Matrix
Beryllium Aluminum Silicate (Be3Al2Si6O18)
mineral
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Greyscale Moonstone / Silver Sheen Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Green Aventurine
SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)
mineral
Gneiss (High-grade Metamorphic Rock)
Gneiss (Metamorphic silicate rock)
metamorphic
Sandstone
Arenite
sedimentary