Quartz Geode Fragment
Silicon Dioxide (SiO2)
Category
Browse antropogenic (man made glass byproduct) specimens identified by the Rock Identifier community.
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Blue Apatite
Chlorapatite / Fluorapatite (Ca5(PO4)3(F,Cl,OH))
Sandstone (Ferruginous)
Ferruginous Sandstone (SiO2 with iron oxide cement)
Fluorite (often referred to as Rainbow Fluorite)
Fluorite (Calcium Fluoride, CaF2)
Jasper (likely Brecciated or Multi-colored)
Jasper (SiO2)
Rough Amethyst Quartz
Silicon Dioxide with Iron impurities (SiO2)
Amethyst
SiO2 (Silicon Dioxide) with Iron (Fe3+) impurities
Chert (Holey Stone)
Microcrystalline Quartz (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Jasper
Silicon dioxide (SiO2)
Jasper (specifically Yellow/Red Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
Rose Quartz
Silicon Dioxide (SiO2)
Peridot
Olivine ((Mg, Fe)2SiO4)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Zirconia (Ceramic) & Ion-X Glass
Zirconium Dioxide (ZrO2) and Ion-strengthened Aluminosilicate Glass
Clear Quartz
Silicon Dioxide (SiO2)
Quartzite
Quartzite (primarily SiO2)
Milky Quartz (Ferruginous variety)
Silicon Dioxide (SiO2)
Pink Feldspar
Orthoclase (KAlSi3O8) or Microcline
Quartz (specifically Clear Quartz or Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Milky/Crystalline)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Quartzite)
Silicon Dioxide (SiO2)
Black Sapphire
Corundum (Al2O3 with iron and titanium impurities)
Milky Quartz
Silicon dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Olivine Basalt
Mafic Volcanic Rock (rich in (Mg, Fe)2SiO4)
Jasper
Jasper (Silicon Dioxide, SiO2)
Apache Tear (Obsidian)
Obsidian / Amorphous Volcanic Glass (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Chalcedony (specifically Agate or Moonstone-like Quartz)
Silicon Dioxide (SiO2)
Fluorite (Green Fluorite)
Calcium Fluoride (CaF2)
Sapphire (Raw/Rough)
Corundum (Al2O3)
Basalt with Mineral Vein (Cobble)
Basalt (with likely Quartz/Calcite vein)