Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite)
Category
Browse metamorphic and sedimentary specimens identified by the Rock Identifier community.
Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite)
Quartz (various varieties)
SiO₂ (Silicon Dioxide)
Quartzite with Mafic Intrusion (Gneiss/Schist Contact)
Metamorphic Quartzite (SiO2) with Amphibole/Biotite Schist
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Almandine Garnet
Almandine - Fe3Al2(SiO4)3
Quartz Pebble
Silicon Dioxide (SiO2)
Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Green Aventurine
Silicon dioxide (SiO2) with inclusions of Fuchsite mica
Rhodonite
Manganese Silicate (Mn, Fe, Mg, Ca)SiO3
Lapis Lazuli
Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2
Greenstone or Epidote-rich Metamorphic Rock
Chlorite/Epidote Schist or Greenstone
Mixed collection of minerals and rocks (Jasper, Carnelian, Granite, and Quartz)
Silicon Dioxide (SiO2) with varying impurities for silicates and igneous aggregates
Mica (Biotite or Phlogopite variety)
Phyllosilicate (complex mineral formula involving K, Mg, Fe, Al, Si, and O)
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
Epidosite (Unakite-related)
Epidosite (composed primarily of Epidote and Quartz)
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Fuchsite
Chromium-rich Muscovite (KAl2(AlSi3O10)(OH,F)2 with Cr replacements)
Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite inclusions)
Jade (likely Jadeite)
Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)
Jade
There are two distinct minerals commonly known as Jade: Nephrite (a calcium magnesium silicate - Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (a sodium aluminum silicate - NaAlSi2O6). Based on the image showing a typically softer, more fibrous appearance, it is likely Nephrite.
Green Calcite
Calcite (CaCO3)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Shale or Mudstone (Based on appearance)
Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)
Epidote
Epidote (Ca2(Al2,Fe3+)AlSi3O12(OH))
Jadeite Jade
Jadeite (NaAlSi2O6)
Slate
Foliated low-grade metamorphic rock
Epidote Water-Worn Pebble
Epidote {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Epidote with quartz/feldspar
Epidote, Ca2(Al,Fe)3(SiO4)3(OH)
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3
Ruby in Zoisite
Ruby (α-Al2O3) embedded in Zoisite (Ca2Al3(SiO4)3(OH)) with some Hornblende
Quartz / Quartzite Fragment
Silicon Dioxide (SiO2)
Greenschist
Greenschist (containing Chlorite, Epidote, and Actinolite)
Eclogite
Eclogite (Omphacite-Garnet Rock)
Slate
Foliated Metamorphic Rock (composed mainly of clay minerals or micas)
Ruby (Corundum)
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
Rhodonite
Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3
Quartz with Muscovite Mica
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride (KAl2(AlSi3O10)(F,OH)2)
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Quartzite
Metamorphic Quartz (SiO2)