Sandstone
Clastic Sedimentary Rock
sedimentary
Category
Synthetic Glass (Often Categorized As A Simulated Mineral)
Browse synthetic glass (often categorized as a simulated mineral) specimens identified by the Rock Identifier community.
Learn about Synthetic Glass (Often Categorized As A Simulated Mineral) in the encyclopedia
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Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pink Feldspar with Quartz
Potassium Feldspar (Orthoclase) with SiO2
igneous
Raw Quartz
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Milk Quartz (White Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz with Iron Staining
Silicon Dioxide (SiO2) with Hematite/Limonite inclusions
mineral
Aventurine (Green Quartz)
Silicon dioxide with inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Quartz (Milky/Smoky variety on matrix)
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
Muscovite KAl2(AlSi3O10)(OH)2
mineral
Black Obsidian
Volcanic Glass (SiO2)
igneous
Sandstone (Ferruginous Concretion)
Arenite (with iron oxide cement)
sedimentary
Quartz
Silicon dioxide (SiO2)
mineral
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Quartz vein in Schist
Crystalline Silicon Dioxide (SiO2) in Metamorphic Host
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebbles
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Crystalline Silica (SiO2)
mineral
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Agate
SiO2
Mineral
Obsidian
Volcanic Glass
igneous
Glass
Amorphous Silicon Dioxide (SiO2)
mineraloid
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Sandstone or Weathered Conglomerate
Sedimentary Rock (Quartzose Sandstone / Lithic Arenite)
sedimentary
Obsidian
Obsidian (Volcanic Glass)
igneous
White Quartz Star
Silicon Dioxide (SiO2)
mineral
Quartz with impurities or Host Rock
SiO2 (Silicon Dioxide) with mixed silicates
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Prasiolite (Green Quartz) / Sea Glass Amalgam
SiO2 (Silicon Dioxide)
mineral
Blue Slag Glass
Ferro-silicate glass (Slag)
igneous (man-made/industrial)
Agated Chert
Microcrystalline Quartz (SiO2)
sedimentary
Quartz (Quartzite fragment)
Silicon Dioxide (SiO2)
metamorphic
Agate
SiO2
Mineral
Agate (or Quartz with Agate banding)
Silicon dioxide (SiO2)
Mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Black Sapphire (Basaltic Blue Sapphire)
Corundum (Al2O3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Snowflake Obsidian
Spherulitic Obsidian (Volcanic Glass with Cristobalite inclusions)
igneous
Muscovite (Mica) in Quartz Matrix
Muscovite (KAl2(AlSi3O10)(OH)2) and Quartz (SiO2)
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral