Zebra Jasper
Silicon dioxide (SiO2) with various impurities
Category
Browse metamorphic rock (formed from a fibrous crocidolite asbestos) specimens identified by the Rock Identifier community.
Zebra Jasper
Silicon dioxide (SiO2) with various impurities
Calcite
Calcite (Mineral; CaCO₃)
Agate
Agate (Silicon Dioxide, SiO2)
Jadeite (Jade)
Jadeite (NaAlSi2O6)
Green Aventurine
Aventurine Quartz (SiO2 with fuchsite inclusions)
Lapis Lazuli
Lapis Lazuli (Rock containing Lazurite, Calcite, and Pyrite)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Schist
Mica Schist
Hypersthene
Hypersthene ((Mg,Fe)SiO₃)
Quartzite
Quartzite (primarily SiO2)
Dyed Quartzite
Metamorphosed Quartz (SiO2) with synthetic pigment
Epidote
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Moonstone
Orthoclase (Potassium Aluminum Silicate), Formula: (K,Na)AlSi3O8
Malachite
Malachite (Cu2CO3(OH)2)
Gneiss
Gneiss (a rock type, not a specific mineral with a formula)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Lapis Lazuli
Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2
Garnet Schist
Almandine Garnet Schist (Fe3Al2(SiO4)3 in Schistose matrix)
River Stone (Granitic Gneiss)
Foliated Granitic Gneiss
Chalcedony (Common Opal variant or Chert/Flint)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Nephrite (a form of Jade)
Nephrite (a variety of the mineral actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)
Rough Tanzanite
Zoisite (Ca2Al3(SiO4)3(OH))
Banded River Rock / Gneiss (highly weathered)
Gneiss
Gneiss
High-grade metamorphic rock (Gneiss)
Biotite Schist
Biotite Schist (Rich in K(Mg,Fe)3AlSi3O10(OH)2)
Jade (likely Jadeite)
Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)
Slate
Foliated metamorphic rock
Marble
Marble (primarily Calcite, CaCO3 or Dolomite, CaMg(CO3)2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartzite (River Pebble)
Recrystallized Quartz (SiO2)
Chalcedony (Agate/Blue Quartzite)
Silicon Dioxide (SiO2)
Greenschist
Greenschist facies rock
Granodiorite (Gneissic texture)
Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)
Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2 - a variety of actinolite, an amphibole mineral); Jadeite (Na(Al,Fe3+)Si2O6 - a pyroxene mineral)
Unidentified Rock Fragment
Unknown
Satin Spar (commercially called Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
Banded Gneiss
Gneiss (pronounced 'nice')
Quartzite (River Pebble)
Metamorphic Quartzite (SiO2)
Quartz / Quartzite
Silicon Dioxide (SiO2)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)