Geode (Unopened)
Silicon Dioxide (SiO2) in sedimentary vugs
sedimentary
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is Microcrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is microcrystalline quartz) specimens identified by the Rock Identifier community.
Banded Agate (Crazy Lace/Mexican Agate Variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Banded Agate (Agatized Geode Slice)
Silicon Dioxide (SiO₂)
mineral
Milky Quartz
Quartz (Silica / Silicon Dioxide), SiO2
mineral
Chert (specifically Yellow or Brown Chert / Jasper)
Silicon Dioxide (SiO2)
sedimentary
Carnelian
Carnelian (variety of Chalcedony, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz (Tumbled)
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble (Yellow/Cloudy Quartz)
Silicon Dioxide (SiO2) - Recrystallized Sandstone
metamorphic
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Granite (Orthoclase rich)
Granite (composed primarily of Quartz and Potassium Feldspar KAlSi3O8)
igneous
Limonitic Sandstone (Stained Sandstone)
Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining
sedimentary
Shiva Lingam
Cryptocrystalline Quartz (Jasproid/Chalcedony mix)
sedimentary
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Black Onyx
Cryptocrystalline Chalcedony (SiO2)
mineral
Amethyst (Chevron Amethyst)
Silicon Dioxide (SiO2) with iron impurities
mineral
Chert (Flint)
SiO2 (predominantly microcrystalline or cryptocrystalline quartz)
Sedimentary rock
Milky Quartz
Quartz (Silica - SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
Mineral
Chert Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Serpentine
Serpentine-group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4)
metamorphic
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz (with Iron Oxide staining)
Silicon Dioxide (SiO2)
mineral
Banded Agate (Carnelian variety)
Cryptocrystalline Quartz (SiO2)
mineral
Quartzite with inclusions
Metamorphosed Quartz-rich Rock (SiO2)
metamorphic
Chert (specifically Tan/Brown Chert)
Chert (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Jasper/Chalcedony)
Microcrystalline Silica (SiO2)
sedimentary
Hypersthene (or Enstatite/Ferrosilite)
Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)
Mineral
Chert (with Lichen)
Microcrystalline Quartz (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary