Quartz Geode Pebble
Silicon Dioxide (SiO2)
mineral
Category
Mineralogical Specimen
Browse mineralogical specimen specimens identified by the Rock Identifier community.
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Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
sedimentary
Milky Quartz in Gneiss
Quartzite / Foliated Gneiss containing SiO2
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Granodiorite Pebble
Granodiorite
igneous
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Gastly (Trick or Trade Halloween Series)
Cellulose-carbonaceous composite (Lignocellulose laminated with pigmentary polymers)
Mineral (Synthetic - Paper and Ink Polymorph)
Quartzite
Quartzite (Primary mineral: Quartz, SiO2)
metamorphic
Fluorite Octahedron
Fluorite (Calcium Fluoride, CaF2)
mineral
Fluorite (likely Green Fluorite variant)
Calcium Fluoride (CaF2)
mineral
Granitic Quartz with Feldspar
Granite (composed primarily of SiO2 and KAlSi3O8)
igneous
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Quartz (Citrine or Quartzite Pebble)
Silicon Dioxide (SiO2)
mineral
Greywacke (River Slikenside)
Greywacke (Lithic Sandstone)
sedimentary
Rough Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Quartzite cobblestone
Quartzite (primarily SiO2)
metamorphic
Yellow Quartzite (River Pebble)
Quartzite (SiO2 with iron oxide impurities)
metamorphic
Chert (Jasper/Common Opal mix)
Microcrystalline Quartz (SiO2)
sedimentary
River Sandstone (Lithic Arenite)
Lithic Sandstone (SiO2 dominated with lithic fragments)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone (lithic wake/graywacke variety)
Arenite/Greywacke (SiO2 with lithic fragments)
sedimentary
Quartzite with inclusions
Metamorphic Rock (Mainly SiO2)
metamorphic
Chert (Jasper/Chalcedony variant)
Microcrystalline Quartz (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Dyed Quartzite
Metamorphosed Quartz (SiO2) with synthetic pigment
metamorphic
Quartzite River Pebble
Quartzite (mostly SiO2)
metamorphic
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Petrified Wood
Silicified Wood (primarily SiO2)
mineral
Quartzite Pebble
Metamorphic Quartzite (SiO2)
metamorphic
Jasper (Red Chert)
Jasper (Silicon Dioxide, SiO2)
sedimentary
Chert (Iron-stained)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Basalt Beach Pebble
Basalt (Aphanitic Mafic Volcanic Rock)
igneous
Quartz (Common Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Basalt (River Rock pebble)
Basalt (a mafic extrusive igneous rock)
igneous
Chert (Jasper-bearing)
Microcrystalline silica (SiO2) with iron oxide inclusions
sedimentary
Petrified Wood
Silicified wood (primarily Silicon Dioxide, SiO2)
metamorphic
Basalt
Basalt (dominated by plagioclase feldspar and pyroxene)
igneous
Sandstone Pebble
Arenite (primarily SiO2)
sedimentary
Quartzite (River Pebble)
Metamorphic Quartzite (SiO2)
metamorphic