Red Quartzite
Quartzite (principally SiO2)
metamorphic
Category
Sedimentary (Chemically Precipitated) Or Metamorphic
Browse sedimentary (chemically precipitated) or metamorphic specimens identified by the Rock Identifier community.
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Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Pink Quartzite
Quartzite (primarily SiO2)
metamorphic
Serpentine (Greenstone)
Antigorite, Lizardite, and Chrysolite mixture (Mg3Si2O5(OH)4)
metamorphic
Quartzite
Quartzite (composed primarily of silica, SiO2)
metamorphic
Quartzite
Metamorphosed Quartz Sandstone (primarily SiO2)
metamorphic
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Quartz and Quartzite
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Yellowish)
Silicon Dioxide (SiO2)
mineral
Quartz / Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon Dioxide (SiO2)
sedimentary
Dyed Agate
Silicon Dioxide (SiO2) with artificial pigment
sedimentary
Dyed Blue Agate
Silicon dioxide (SiO2) with artificial pigment
mineral
Ocean Jasper
Spherulitic Chalcedony (SiO2)
mineral
Chert / Flint Nodule
Microcrystalline quartz (SiO2)
sedimentary
Uncertain small pale mineral fragment
Indeterminate; possibly calcite or a light-colored feldspar fragment
mineral
Quartz Druse on Basalt Matrix
Silicon Dioxide (SiO2)
mineral
K2 Jasper
Azurite in Granite
igneous
Chert / Flint
Cryptocrystalline Quartz (SiO2)
sedimentary
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Mixed Agate and Lapis Lazuli Bracelet
Chalcedony (SiO2) and Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2
sedimentary and metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Chert (containing Quartz)
Microcrystalline Silica (SiO2)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Gold in Quartz Matrix
Native Gold (Au) with Quartz (SiO2)
mineral
Agate (Beads)
Silicon Dioxide (SiO2)
mineral
Banded Agate / Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Quartzite with Chert inclusions
Metamorphosed Quartz-rich Rock (SiO2)
metamorphic
Quartz (Milky or Smoky Quartz)
Silicon Dioxide (SiO2)
mineral
Graphite
Graphite (Native Carbon, C)
metamorphic
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Quartz (chalcedony variety) or Limestone with Quartz Veins
SiO2 (for Quartz/Chalcedony); CaCO3 (for Limestone)
Mineral or Sedimentary Rock (with mineral inclusions)
Chert (Jasper-like Silicate)
Silicon Dioxide (SiO2)
sedimentary