Quartz with Inclusions
Silicon Dioxide (SiO2)
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Quartz with Inclusions
Silicon Dioxide (SiO2)
Basalt with Quartz Veins
Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene) with SiO2 inclusions
Quartz
SiO2
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Coal (most likely Bituminous or Anthracite)
Bituminous Coal (Grade of Coal), Anthracite (Grade of Coal)
Pyrite in Matrix
Iron Disulfide (FeS2)
Quartz (Quartz Pebble)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Quartz
Silicon Dioxide (SiO2)
Turquoise
Hydrated phosphate of copper and aluminum; CuAl6(PO4)4(OH)8·4H2O
Weathered gray sandstone or siltstone
Clastic siliciclastic rock, primarily quartz and feldspar grains cemented by silica or carbonate
Quartz and Slate Pebbles
Silicon Dioxide (SiO2) and Metamorphosed Shale/Mudstone
Fossilized Coral
Cnidaria fossil / Calcite-replaced coral
Limestone with Calcite Veins
Sedimentary Calcium Carbonate (CaCO3)
Agate
SiO2 (Chalcedony/Quartz)
Quartz
Silicon Dioxide (SiO2)
Chert / Flint
Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with Chromium-bearing Fuchsite
Quartz Geode (partially opened)
Silicon Dioxide (SiO2) with iron staining
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Quartz (Tumbled)
Silicon Dioxide (SiO2)
Chert
Chert (variant of microcrystalline quartz)
Quartz (Milky/Bull Quartz)
Silicon Dioxide (SiO2)
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) with varying mineral impurities
Epidote in Quartz
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) mixed with SiO2
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Sandstone
Arenite (primarily SiO2 with various cementing agents)
Sandstone (Water-worn Pebble)
Clastic Sedimentary Rock (primarily Quartz and Feldspar)
Sandstone (Micaceous)
Clastic Sedimentary Rock (primarily SiO2 with Mica)
Quartz
Silicon Dioxide (SiO₂)
Sandstone
Clastic sedimentary rock (Quartz arenite)
Quartz with Iron Oxide Inclusions
Silicon Dioxide (SiO2)
Chert Pebble
Chert (Microcrystalline Quartz, SiO2)