Chert (Nodule)
Microcrystalline Quartz (SiO2)
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Purple Aventurine
Quartzite with Lepidolite (SiO2 + K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Spessartine Garnet in Quartz/Feldspar Pegmatite
Spessartine (Mn3Al2(SiO4)3) in Quartz (SiO2) and Feldspar
Snowflake Obsidian
Volcanic Glass with Spherulite Inclusions (primarily SiO2)
Quartzite River Rock
Quartzite (primarily SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartzite River Rock
Metamorphic Quartzite (SiO2)
Blue Quartz
Quartz (SiO2) with inclusions
Green Aventurine
Quartz (Aventurine variety) - SiO₂ with Fuchsite inclusions
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartzite Pebble (with Iron Inclusions)
Quartzite (primarily SiO2 with Fe2O3/FeOOH impurities)
River Stone (Granitic Gneiss)
Foliated Granitic Gneiss
Quartzite
Quartzite (primarily SiO2)
Blue Tiger's Eye
Riebeckite (crocidolite variety)
Granite
Granite (Felsic Plutonic Rock)
Serpentine (variety: Serpentine Rock)
Antigorite, Lizardite, or Chrysotile; formula generally (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
Quartz (Milky/Yellowish variety)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Graywacke with Quartz Vein
Lithic Sandstone (Graywacke)
Emerald in Matrix
Beryl (Be3Al2Si6O18)
Quartzite (with mineral vein)
Metamorphosed Quartz-rich Sandstone (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Quartzite
Quartzite (SiO2)
Gneiss (Metamorphic Rock)
Gneiss
Jasper
Silicon dioxide (SiO2)
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
Glacial Cobble (likely Granitic or Gneissic)
Granite/Gneiss Glacial Erratic
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Quartzite with Iron Hydroxide Staining
Quartzite (primarily SiO2) with Limonite/Goethite staining
Pink Granite
Granite (Felsic Plutonic Rock)
Quartzite
Quartzite (SiO2)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Red Jasper
Jasper (a variety of Quartz, SiO2)
Quartzite Pebble
Quartzite (primarily SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite with Chlorite/Epidote
Metamorphosed Quartzite (SiO2)
Red Quartzite
Quartzite (principally SiO2)
Orange Quartzite (or Aventurine Quartz)
Quartzite (primarily SiO2 with Hematite or Goethite inclusions)