Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Category
Man Made Glass
Browse man made glass specimens identified by the Rock Identifier community.
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si)4O10(F,OH)2)
mineral
Sandstone, Quartzite, and River Pebbles
Silicon Dioxide (SiO2) based Sedimentary/Metamorphic structures
Sedimentary and Metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Chert (Arrowhead Debitage or Spall)
Silicon Dioxide (SiO₂)
sedimentary
Orthoclase Feldspar (Sunstone variety)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (SiO2 principal component)
sedimentary
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (Stream-rounded)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based with mineral cement)
sedimentary
Smoky Quartz and Biotite Schist
Quartz-Biotite Schist (SiO2 + K(Mg,Fe)3AlSi3O10(F,OH)2)
metamorphic
Sandstone (Quartz Sandstone)
Arenite (primarily SiO2)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite (River Pebble)
Meta-quartzite (composed primarily of SiO2)
metamorphic
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (SiO2 principal composition)
sedimentary
Quartzite with Quartz Geode / Vug
Crystalline Silicon Dioxide (SiO2) in Metamorphic Host
metamorphic
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sandstone (Quartz-rich)
Arenite (SiO2 based)
sedimentary
Orange Quartzite / Quartz River Siltstone
Quartzite (SiO2)
metamorphic
Orthoclase (Potassium) Feldspar in Quartz
KAlSi3O8 (Potassium Aluminum Silicate)
igneous
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (with Iron Oxide)
Arenite with Limonite/Hematite staining
sedimentary
Sandstone (Red/Brown Variety)
Arenite (SiO2 with iron oxide impurities)
sedimentary
Pink Feldspar
Orthoclase Feldspar (KAlSi3O8)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Red Sandstone
Arenite (with Iron Oxide pigmentation)
Sedimentary
Yellow Quartzite Pebble
Quartzite (SiO2)
metamorphic
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Quartz / Quartzite Fragment
Silicon Dioxide (SiO2)
mineral / metamorphic