Quartz Geode
Quartz (Silicon Dioxide, SiO2) Geode
sedimentary
Category
Amorphous Solid
Browse amorphous solid specimens identified by the Rock Identifier community.
Gold Ore / Native Gold
Native Gold (Au)
mineral
Chondrite Meteorite
Ordinary Chondrite (S-type asteroid origin)
igneous
Basalt with Amygdules
Amygdaloidal Basalt
igneous
Geode (unopened)
SiO2 - Chert-shelled concretion (mostly Quartz)
sedimentary
Quartz Geode (with possible Manganese or Goethite coating)
Silicon Dioxide (SiO2)
mineral
Vesicular Basalt (or Scoria)
Vesicular Basalt
igneous
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Garnet Schist
Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)
metamorphic
Peach Aventurine
Quartz variety (SiO2 + Hematite/Goethite inclusions)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Quartz Geode (Cracked)
Quartz (Silicon Dioxide, SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Gold
Gold (Native Au)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Diamond (Colorless/White)
Carbon (C)
mineral
Quartz Geode
Silicon Dioxide (SiO2) in Host Rock
sedimentary
Geode (Chert or Quartz Nodule)
Silicon Dioxide (SiO2)
sedimentary
Geode with Quartz/Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Chevron Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Strawberry Quartz (Lepidocrosite/Hematite-Included Quartz)
Quartz (Silicon Dioxide) with Lepidocrosite or Hematite inclusions (SiO2 + Fe2O3 · nH2O)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
United States Quarter Dollar
Cupronickel Clad Alloy (75% Copper, 25% Nickel over a 100% Copper core)
Metal / Man-made mineral-like object
Black Onyx
Silicon dioxide (SiO2) with parallel banded structure
Mineral (variety of chalcedony)
Gold Nugget
Native Gold (Au)
mineral
Quartzite Pebble (River Rock)
Quartzite (mainly SiO2)
metamorphic
Gold Ore in Quartz/Matrix
Native Gold (Au) in Quartz (SiO2) matrix
mineral
Diamond Drill Core (Greenschist and Quartzite)
Chlorite Schist / Meta-quartzite (Metamorphic Rock Core Sample)
metamorphic
Granite (Core Sample)
Phaneritic Felsic Igneous Rock (Granite)
igneous
Porphyritic Andesite
Andesite (Porphyry)
igneous
Quartz Geode (partially opened)
Silicon Dioxide (SiO2) with iron staining
mineral
Asphalt Concrete
Bituminous Concrete / Asphaltic Composite
not a natural rock (man-made composite)
Chondrite Meteorite
L or H Ordinary Chondrite
igneous
Agate (Thunderegg segment)
Silicon dioxide (SiO2) - Microcrystalline Quartz/Chalcedony
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Quartz Geode (Cracked Open Fragment)
Silicon Dioxide (SiO2)
mineral
Onyx (Black Onyx)
Silicon Dioxide (SiO2)
mineral