Gneiss
Gneiss (High-grade metamorphic rock)
Category
Browse sedimentary or metamorphic derived specimens identified by the Rock Identifier community.
Gneiss
Gneiss (High-grade metamorphic rock)
River Stone (River Pebble)
River Stone (Composition: primarily Quartzite, Chalcedony, and silicate minerals)
Dragon Blood Jasper
Epidote with Red Piedmontite (Chalcedony/Quartz variant)
Milky Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Magnetite (Lodestone)
Iron(II,III) oxide (Fe3O4)
Calcite in Matrix
Calcium Carbonate (CaCO3)
Quartz (Clear/White)
Silicon Dioxide (SiO2)
Blue Calcite
Calcium Carbonate (CaCO3)
Pyrite
Iron Sulfide (FeS2)
Quartz Pebble
Silicon Dioxide (SiO2)
Feldspar
Potassium Feldspar (KAlSi3O8)
Pyrite
Iron Sulfide (FeS2)
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (specifically Milky/White Quartz)
Silicon Dioxide (SiO2)
Green Calcite
Calcite (Calcium Carbonate, CaCO3)
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
Quartz (Milky/Rose variety)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Quartz (Milky/Smoky Crystal fragment)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Orange Calcite
Calcite (Calcium Carbonate - CaCO3)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Crystalline Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Tumbled/Water-worn)
Silicon Dioxide (SiO2)
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
Quartz (Rosy/Clear variety)
Silicon Dioxide (SiO2)
Magnetite Sand (Black Sand)
Magnetite (Fe3O4)
Clear Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Disulfide (FeS2)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)