Quartz (Fieldstone/Pebble)
Silicon Dioxide (SiO2)
Category
Browse metamorphic, likely sedimentary with quartz veins specimens identified by the Rock Identifier community.
Quartz (Fieldstone/Pebble)
Silicon Dioxide (SiO2)
Green Aventurine
SiO2 (Silicon Dioxide) with Fuchsite inclusions
Quartz Vein in Gneiss or Basalt
Milky Quartz (SiO2) within Metamorphic Host Rock
Clear Quartz
Silicon Dioxide (SiO2)
Adventurine (Green)
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Quartzite
Quartzite (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Yellow Quartz (Citrine or Iron-Stained Quartz)
Silicon Dioxide (SiO2)
Smoky Quartz (Vein Quartz)
Quartz (Silicon Dioxide, SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
White Agate (resembling Bone Chalcedony)
Cryptocrystalline Quartz (SiO2)
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Yellow Quartz (Citrine or Iron-Stained Quartz)
Silicon Dioxide (SiO2)
Epidote in Quartz (Epidosite)
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
Amethyst (Faceted)
Silicon Dioxide with Iron impurities (SiO2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Yellow Calcite
Calcium Carbonate (CaCO3)
Pyrite (Fool's Gold) in Matrix
Iron Sulfide (FeS2)
Chert (Iron-stained)
Chert (primarily Microcrystalline Quartz, SiO2)
Rough Quartz (Grey-Green)
Silicon Dioxide (SiO2)
Ironstone Concretion (likely)
Goethite/Hematite/Limonite cemented sediment
Yellow Aventurine (or Citrine-colored Quartz)
Silicon Dioxide (SiO2) with inclusions
Orange Quartzite (River Pebble)
Quartzite (primarily SiO2)
Agate (specifically Moss or Plume Agate nodding toward Agatized Wood)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz (Chalcedony)
Chert (Nodule/Pebble)
Chert (Silicon Dioxide, SiO2)
Jasper (likely Polychrome or Mookaite variants)
Silicon Dioxide (SiO2) with iron oxide and hydroxide inclusions
Amethyst (Purple), Sulfur (Yellow), and Blue Apatite
SiO2 (Quartz), S (Native Sulfur), Ca5(PO4)3(F,Cl,OH) (Apatite Group)
Smoky Quartz
Silicon Dioxide (SiO2)
Clear Quartz (beads in a bracelet)
Quartz (SiO2)
Green Aventurine
Aventurine Quartz (SiO2 with fuchsite inclusions)
Quartzite Pebble
Quartzite (primarily SiO2)
Blue Calcite
Calcium Carbonate (CaCO3)
Botryoidal Pyrite
Iron Sulfide (FeS2)
Jasper (Red Jasper)
Silicon Dioxide (SiO₂)
Ferruginous Quartz (Iron-stained Quartz)
Quartz with Iron Oxide inclusions (SiO2 with Fe2O3)
Calcite (likely a tumbled specimen)
Calcite (CaCO 3 )