Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Category
Igneous And Mineral
Browse igneous and mineral specimens identified by the Rock Identifier community.
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Milky Quartz
Silicon Dioxide (SiO2)
mineral
Basalt
Basalt
igneous
Gneiss (specifically Banded Gneiss)
Gneiss
metamorphic
Aquamarine
Beryl (Be3Al2Si6O18)
Mineral
Topaz
Topaz (Al2SiO4(F,OH)2)
Mineral
Quartz Crystal
Quartz (SiO₂)
Mineral
Quartz
Silicon Dioxide (SiO2)
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Orthoclase (Potassium Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Calcite (commonly referred to as Orange Calcite or Honey Calcite given its color)
Calcite
Mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic Felsic Igneous Rock
igneous
Basalt (River Pebble)
Extrusive Mafic Igneous Rock
igneous
Greenstone
Metabasalt / Metamorphosed Igneous Rock
metamorphic
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Amorphous volcanic glass (principally SiO2)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Black Obsidian
Volcanic Glass (SiO2 + impurities like Fe3O4)
igneous
Snowflake Obsidian
Volcanic Glass (SiO2 + impurities)
igneous
Snowflake Obsidian
Spherulitic Obsidian (Volcanic Glass with Cristobalite inclusions)
igneous
Obsidian
Obsidian (Volcanic Glass, SiO2 + impurities)
igneous
Snowflake Obsidian
Hydrated Volcanic Glass (primarily SiO2) with Cristobalite inclusions
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Amygdaloidal Basalt
Vesicular Basalt with secondary mineral infilling (commonly Zeolite, Calcite, or Quartz)
igneous
Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Ruby and Diamond Heart Pendant
Corundum (Al2O3) and Diamond (C)
mineral
Obsidian
Volcanic Glass (70-75% SiO2 with MgO and Fe3O4)
igneous
Diorite (Polished River Pebble)
Diorite (Intermediate intrusive igneous rock)
igneous
Granite
Granite (Phaneritic intrusive igneous rock) - Composition: SiO2, Al2O3, K2O, Na2O
igneous
Greenstone (Metabalt)
Chlorite schist / Epidiorite
metamorphic
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Milky Quartz with Iron Inclusions
Crystalline Silicon Dioxide (SiO2)
mineral
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral