Tumbled Aventurine
Silicon Dioxide with inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Category
Browse metamorphic mineral specimens identified by the Rock Identifier community.
Tumbled Aventurine
Silicon Dioxide with inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Milky Quartz/White Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
Rhodonite
Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3
Native Gold Nugget
Native Gold (Au)
Molybdenite in Quartz
Molybdenite (MoS2) with Quartz (SiO2)
Arsenopyrite
Arsenopyrite (FeAsS)
Yellow Quartz
Silicon Dioxide (SiO2)
Galena
Lead(II) sulfide (PbS)
Aquamarine with Ruby Accent
Beryllium Aluminum Silicate (Be3Al2Si6O18) with Aluminum Oxide (Al2O3)
Muscovite Mica
KAl2(AlSi3O10)(F,OH)2
Hypersthene
Enstatite (Hypersthene variety), (Mg,Fe)SiO3
Feldspar (specifically Orthoclase)
Potassium Aluminum Silicate (KAlSi3O8)
Agate
Cryptocrystalline quartz (SiO2)
Greenstone
Metabasalt (Greenstone)
Slate
Foliated Metamorphic Rock (primarily composed of quartz, illite, chlorite, and micas)
Mica Schist
Mica Schist (KAl2(AlSi3O10)(OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Pyrite
Iron Disulfide (FeS2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky or Common Quartz)
Silicon Dioxide (SiO2)
Red Garnet
Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)
Strawberry Quartz
Quartz with Hematite or Goethite inclusions (SiO2 + inclusions)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Schist
Chlorite/Mica Schist
Morganite (Pink Beryl)
Beryllium aluminum silicate Be3Al2(SiO3)6
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
Quartzite Pebble
Metamorphic Quartzite (predominantly SiO2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Almandine Garnet in Matrix
Almandine Garnet (Fe3Al2(SiO4)3) in Schist/Quartz Matrix
Black Star Diopside (beads)
Diopside (CaMgSi2O6) - a member of the pyroxene group
Quartz with impurities or Host Rock
SiO2 (Silicon Dioxide) with mixed silicates
Clear Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Smoky Quartz
Smoky Quartz (SiO2)
Gneiss (Metamorphic Rock)
Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)
Gold in Quartz Ore
Hydrothermal Quartz with native Gold (Au)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)