Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Category
Synthetic (Not A Rock Or Mineral)
Browse synthetic (not a rock or mineral) specimens identified by the Rock Identifier community.
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Quartz-veined Metamorphic Rock
Quartz-veined Schist or Gneiss
metamorphic
Amygdaloidal Basalt
Basalt (with filled vesicles/amygdules)
igneous
Hydrothermal Quartz Breccia
Hydrothermal Breccia with Quartz and Chloritic/Epidote Clasts
metamorphic
Pegmatite
Granitic Pegmatite
igneous
Wishing Stone
Greenschist or Basalt with Quartz/Calcite Vein
metamorphic
Porphyritic Basalt (Drill Core)
Porphyritic Basalt with Plagioclase Phenocrysts
igneous
Weathered granite (feldspathic, iron-stained granite)
Granite; primarily quartz, potassium feldspar, plagioclase feldspar, and minor mica/amphibole. Exact identification is uncertain from a single photograph.
igneous
Obsidian with Cristobalite
Volcanic Glass (Amorphous Silicon Dioxide) with Cristobalite inclusions
igneous
Sandstone (Quartzite texture)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Banded Sandstone (Liesegang Rings)
Sedimentary Arenite (SiO2 with FeO/Fe2O3 impurities)
sedimentary
Breccia
Sedimentary Breccia
sedimentary
Gossan with Copper Carbonate (Chrysocolla/Malachite)
Ferruginous Oxide (Gossan) with Cu2CO3(OH)2 (Malachite) or (Cu,Al)2H2Si2O5(OH)4 (Chrysocolla)
Mineral/Sedimentary Interface
Unakite
Epidote-Feldspar rock
Metamorphic Rock
Sandstone
Arenite (SiO2 principal component)
sedimentary
Sandstone
Arenite (Siliclastic sedimentary rock)
sedimentary
Conglomerate
Conglomerate Rock
sedimentary
Weathered granite or granitic gneiss fragment
Granite, predominantly quartz, feldspar, and dark mica/amphibole
igneous
Basalt with Quartz/Calcite Vein
Amygdaloidal Basalt (matrix) with Mineral Vein filling
igneous
Dalmatian Stone
Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Felsic intrusive igneous rock
igneous
Granite
Intrusive Igneous Rock
igneous
Sandstone
Clastic Sedimentary Rock
sedimentary
Red Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Arenite (Sedimentary Rock)
sedimentary
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic extrusive volcanic rock with secondary mineral infilling)
igneous
Druzy Quartz on Limestone
Silicon Dioxide (SiO2)
mineral
Zebra Jasper
Silicified sedimentary rock (SiO2) with mineral inclusions
sedimentary
Epidote
Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Schist
Schist (Metamorphic Rock)
metamorphic
Vesicular Basalt River Rock
Vesicular Basalt
igneous
Vesicular Basalt
Extrusive mafic igneous rock (Basalt with vesicular texture)
igneous
Dalmatian Jasper
Peralkaline Quartz-feldspathic Rock (Arfvedsonite-bearing)
igneous
River Pebble (Siltstone / Sandstone Pebble)
Sedimentary Rock (Quartz, Feldspar, Clay Minerals)
sedimentary
Turquoise (Dyed Howlite/Magnesite)
CuAl6(PO4)4(OH)8·4H2O (Natural Turquoise) or Ca2B5SiO9(OH)5 (Howlite)
mineral
Basalt with Quartz Vein
Basalt with silicon dioxide (SiO2) inclusion
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral