Gold in Quartz Matrix
Native Gold (Au) with Quartz (SiO2) and Slate/Shale
mineral
Category
Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites)
Browse industrial byproduct (often confused with igneous rocks or meteorites) specimens identified by the Rock Identifier community.
Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Basalt (River Pebble)
Basalt (dominated by Plagioclase Feldspar and Pyroxene)
igneous
Jasper (Multi-colored) / Sea Glass Slag
Silicon Dioxide (SiO2) with impurities of Iron Oxide
Sedimentary (if natural Jasper) or Artificial (if Slag)
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
mineral
Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)
Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)
mineraloid / industrial byproduct
Granite with Epidote
Granite, containing quartz, feldspar, and epidote
Igneous
Dalmatian Stone (Dalmation Jasper)
Aplite with Arfvedsonite inclusions
igneous
Tiffany Stone
Bertrandite Fluorite (CaF2 + Be4Si2O7(OH)2)
metamorphic
Tektite (Indochinite)
Tektite (Amorphous Meteoritic Glass)
igneous
Amethyst
Crystalline Quartz (SiO2) with iron impurities
mineral
Gemstone Sand (Mineral Assortment)
Mixed Mineral Concentrates (Commonly including Quartz SiO2, Garnet X3Y2(SiO4)3, and Tourmaline (Na,Ca)(Li,Mg,Al)3(Al,Fe,Mn)6(BO3)3(Si6O18)(OH,F)4)
mineral
Diamond
Diamond (pure carbon, C)
mineral
Obsidian
Obsidian (principally SiO2)
igneous
Tiffany Stone
Bertrandite (with Fluorite, Opal, and Chalcedony), Be4Si2O7(OH)2
mineral
Olivine (Peridotite)
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Bismuth
Bismuth (element Bi) with oxidized thin-film interference layer
mineral
Quartzite with Quartz Veining
Quartzite (primarily SiO2)
metamorphic
Dalmatian Jasper (or Dalmatian Stone)
Dalmatian Stone (A peralkaline felsite composed of feldspar, quartz, and sodic amphibole)
igneous
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Ambergris
Ambra grisea (Metabolic byproduct)
Organic (Geological relative)
Cobalt Blue Slag Glass
Amorphous Silicon Dioxide (anthropogenic) with Cobalt additives
mineraloid
Dragon Blood Jasper
Epidote-containing Quartz Chalcedony (SiO2 with Ca2(Al, Fe)3(SiO4)3(OH))
metamorphic
Bull Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
mineral (synthetic)
Silicon Carbide (Carborundum)
Silicon Carbide (SiC)
mineral
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Silicon Carbide (Carborundum)
Silicon Carbide (SiC)
mineral
Arsenopyrite with Schist Matrix
Arsenopyrite (FeAsS)
mineral
Milky Quartz (with Iron staining)
Silicon Dioxide (SiO2)
mineral
Iron-Nickel Meteorite
Siderite (Meteoric Iron-Nickel alloy)
igneous
Quartz (Milky/River Quartz)
Silicon Dioxide (SiO2)
mineral
Amethyst
Amethyst (Silicon Dioxide - SiO2 with iron impurities)
mineral
Sandstone (with Iron Siderite Concretion)
Arenite with Ironstone Concretion (FeCO3)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Dragon Vein Agate
Chalcedony (Quartz) - SiO2
mineral
Ferruginous Sandstone (Ironstone Conglomerate fragments)
Ferruginous clastic sedimentary rock (SiO2 cemented by Fe2O3)
sedimentary
Chondrite Meteorite Fragment
Ordinary Chondrite (L or H type)
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Silver (Jewelry form)
Native Silver (Ag)
mineral
Iron-Nickel Meteorite fragment
Siderite (meteoritic iron), composed primarily of Kamacite (α-(Fe,Ni)) and Taenite (γ-(Fe,Ni))
mineral