Actinolite
Ca2(Mg,Fe)5Si8O22(OH)2
mineral
Category
Metamorphic (Localized) Or Sedimentary
Browse metamorphic (localized) or sedimentary specimens identified by the Rock Identifier community.
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Biotite (Mica)
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Amazonite
K(AlSi3O8)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Garnet
Garnet Group (often Pyrope or Almandine); X3Y2(SiO4)3
mineral
Seraphinite (Clinochlore)
Clinochlore (Mg,Fe2+)5Al(Si3Al)O10(OH)8
mineral
Epidote in Quartz (Epidosite)
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Assorted Semi-Precious Gemstone Crosses
Quartz, Silicates, Carbonates (various)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
mineral
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Aquamarine with Ruby Accent
Beryllium Aluminum Silicate (Be3Al2Si6O18) with Aluminum Oxide (Al2O3)
mineral
Blue Sapphire (likely costume glass imitation)
Corundum (Al2O3) with iron/titanium impurities
mineral
Garnet (likely Almandine)
Almandine - Fe3Al2(SiO4)3
mineral
Arsenopyrite
Arsenopyrite (FeAsS)
mineral
Quartz (possibly Citrine or Smoky Quartz variety)
Silicon Dioxide (SiO2)
mineral
Quartz with Muscovite Mica
SiO2 with KAl2(AlSi3O10)(OH)2
mineral group
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Eclogite
Eclogite (Pyrope garnet and Omphacite pyroxene)
metamorphic
Dyed Quartzite
Metamorphosed Quartz (SiO2) with synthetic pigment
metamorphic
Quartzite pebble
Metamorphic Quartz (SiO2)
metamorphic
Potassium Feldspar (Orthoclase)
KAlSi3O8
mineral
Blue Tiger's Eye (Hawks Eye)
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Red Aventurine
Aventurine Quartz (SiO2 + Hematite/Goethite)
metamorphic
Jadeite
NaAlSi2O6 (Sodium Aluminum Silicate)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with inclusions
metamorphic
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Eclogite
Eclogite (Omphacite + Pyrope)
metamorphic
Peacock Ore
Bornite (Cu5FeS4)
mineral
Schist
Mica Schist
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon dioxide (SiO2)
mineral
Quartzite
Metamorphic Quartz (SiO2)
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Amazonite
K(AlSi3O8), Microcline (potassium feldspar)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Sunstone
Feldspar (variety Oligoclase or Labradorite), (Ca,Na)(Al,Si)4O8
mineral