Feldspathic Gneiss (Granite Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
Category
Browse mineral (tectosilicate) specimens identified by the Rock Identifier community.
Feldspathic Gneiss (Granite Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
Yellow Aventurine
Quartz (SiO2) with inclusions
Sandstone
Arenite (composed primarily of SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in Altered Host Rock
Quartz (Gravel Pebble)
Silicon Dioxide (SiO2)
Quartz Veinated Sandstone or Siltstone
Silicon Dioxide (SiO2) within a clastic sedimentary matrix
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble (with Iron Staining)
Crystalline Silicon Dioxide (SiO2)
Quartz (Common or Milky)
Silicon Dioxide (SiO2)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Microcrystalline/Macro crystalline variety)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Orthoclase Feldspar
KAlSi3O8 (Potassium aluminum silicate)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (specifically Quartzite or Massive Quartz)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Orthoclase Feldspar (Salmon variety)
Orthoclase, KAlSi3O8
Quartz pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Quartz with inclusions
Silicon Dioxide (SiO2)
Quartz Pebble (Sea Glass-like Quartz)
Quartz (Silicon Dioxide - SiO2)
Quartz (Milky or Smoky Quartz)
Silicon Dioxide (SiO2)
Quartz with Limonite Staining
Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O)
Unakite
Unakite (Metasomatized Granite)
Sand Grain (Silica/Quartz Grain)
Silicon Dioxide (SiO2)
Green Moss Agate
Agate (Silicon Dioxide, SiO2) with inclusions
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Azurite and Malachite
Copper Carbonates: Cu3(CO3)2(OH)2 (Azurite) and Cu2CO3(OH)2 (Malachite)
Tanzanite
Blue Zoisite (Ca2Al3(SiO4)3(OH))
Blue Quartz
Quartz (Silicon Dioxide) with inclusions, SiO2
Pink Spinel
Magnesium Aluminum Oxide (MgAl2O4)
Petrified Wood
Silicified Wood (SiO2)
Chondrite Meteorite
Ordinary Chondrite (L or H type)
Citrine Quartz
Silicon Dioxide (SiO2)