Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating
mineral
Category
Sedimentary (Processed Mineral Product)
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Sandstone (Ferruginous/Banded)
Clastic Terrigenous Sandstone (SiO2 with Fe2O3 cement)
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Granite (Granitic Pegmatite/Porphyry)
Felsic intrusive igneous rock (Quartz, Feldspar, Mica composition)
igneous
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Pyrite in Quartz (Drill Core)
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions
igneous/metamorphic (hydrothermal)
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Extrusive)
igneous
Serpentinite
Serpentinite (complex silicate minerals including Mg3Si2O5(OH)4)
metamorphic
Glass
Amorphous Silicon Dioxide (SiO2)
mineraloid
Milky Quartz (or Iron-Stained Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Rough Quartz Crystal in Matrix
Silicon Dioxide (SiO2)
mineral
Blue Agate (Tumbled and Dyed)
Silicon Dioxide (SiO2) with likely organic dyes
mineral
Sandstone
Arenite
sedimentary
Chrysocolla
Chrysocolla (Cu,Al)2H2Si2O5(OH)4·nH2O
Mineral
Pink Satin Spar (Satin Spar Selenite Dyed)
Gypsum (CaSO4·2H2O)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Howlite
Howlite (Ca2B5SiO9(OH)5)
mineral
Carnelian
Carnelian (SiO2)
mineral
Chalk
CaCO3 (primarily Calcium Carbonate), biogenic sedimentary rock
Sedimentary
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Watermelon Tourmaline
Elbaite - Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3OH
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Quartz Sandstone)
Arenite (primarily SiO2)
sedimentary
Shale
Clastic sedimentary rock (primarily clay and silt minerals)
sedimentary
Metal Alloy (Jewelry)
Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.
Man-made Material (jewelry, metal alloy)
Red Jasper (Tumbled)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary/mineral
Pearl
Pearl (Calcium Carbonate with organic conchiolin, CaCO3)
mineral
Green Fluorite in Host Rock
Fluorite (Calcium Fluoride, CaF2)
mineral
Moss Agate
Chalcedony (Silicon Dioxide with inclusions) - SiO2
mineral
Milky Quartz Vein with Matrix
Silicon Dioxide (SiO2)
mineral
Quartz nodule (River pebble)
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
Slag Glass (Cullet Glass)
Amorphous Silica (Industrial byproduct)
mineral
Orange Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Chlorite/Moss Infusions
Silicon Dioxide (SiO2)
mineral
Rhodonite
Manganese Silicate (Mn, Fe, Mg, Ca)SiO3
mineral
Quartz (Milky/River Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Mahogany Obsidian
Obsidian (Volcanic Glass) with Hematite or Magnetite inclusions, SiO2 (Silicon Dioxide)
igneous
Metal Alloy (Likely Pewter or Sterling Silver)
Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).
Man-made material (metal)