Gold in Quartz Matrix
Native Gold (Au) with Quartz (SiO2)
mineral
Category
Mineral Based Alloy (Anthropogenic)
Browse mineral based alloy (anthropogenic) specimens identified by the Rock Identifier community.
Learn about Mineral Based Alloy (Anthropogenic) in the encyclopedia
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Gold Nugget
Native Gold (Au)
mineral
Cubic Zirconia (Man-made)
Cubic Zirconia (ZrO2) with Enamel and Metal Alloy
mineral
Sandstone (River Rock)
Arenite (SiO2 based sedimentary rock)
sedimentary
Beryl (Variety: Aquamarine/Green Beryl)
Beryllium Aluminum Silicate (Be3Al2Si6O18)
mineral
Sandstone (likely Arkosic or Lithic)
Clastic Sedimentary Rock (composed predominantly of sand-sized grains, 0.0625 to 2 mm)
sedimentary
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Blue Sapphire
Corundum (Al2O3)
mineral
Banded Calcite (often sold as 'Green Onyx')
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Beach Pebble (Gabbro or Basalt Porphyry)
Mafic Igneous Rock (Porphyritic Basalt / Gabbro)
igneous
Porphyry (Flower Stone)
Porphyritic Basalt or Andesite
igneous
Cinnabar in Quartz
Silicon Dioxide (SiO2) with Mercury Sulfide (HgS) inclusions
Mineral
Geode or Concretion
Silica-based Concretion / Quartz Geode
sedimentary
Unidentified dark reddish-brown rock or mineral specimen
Indeterminate from the blurred image; possibly iron-stained quartz, jasper, or a metallic sulfide-bearing rock
mineral
Charoite
Charoite (K(Ca,Na)2Si4O10(OH,F)·H2O)
mineral
Red Sandstone (Iron-Rich)
Arenite (Fe2O3)
sedimentary
Cone-in-cone structure (Limestone)
Cone-in-cone structure (Secondary Sedimentary Structure)
sedimentary
Sandstone
Arenite (primarily Quartz Arenite)
sedimentary
Aragonite (specifically Mexican Marbled Onyx)
Aragonite (Calcium Carbonate, CaCO3)
mineral
Rhodonite Tumbled Chips
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Unakite
Altered Granite (Epidotized Granite)
metamorphic
Iron Meteorite
Siderite (Iron-Nickel Alloy)
meteorite
Iron Meteorite
Siderite (Iron-Nickel Alloy)
meteorite
Sandstone
Arenite (SiO2 based with various cements)
sedimentary
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 based)
sedimentary
Sandstone (Quartz-rich)
Arenite (SiO2 based clastic rock)
sedimentary
Sandstone
Arenite (primarily Quartz-based Sandstone)
sedimentary
Mixed Gemstone and Mineral Collection
Silicon Dioxide (SiO2) based minerals and others
mineral
Iron Meteorite
Siderite (meteoritic iron, Fe-Ni alloy)
mineral
Hag Stone (Sandstone with Boreholes)
Bored Sandstone (Sedimentary rock with lithophaga-style borings)
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Native Copper
Native Copper (Cu)
mineral
Asphalt (Bituminous Concrete)
Bituminous Concrete / Pavement
man-made (synthetic rock)
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Antropogenic (Man-made industrial byproduct)
Chert (Cream Variety)
Microcrystalline silica (SiO2)
sedimentary
N/A (The provided image is a storyboard/digital document)
N/A
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Likely galena-bearing ore
Galena (lead sulfide, PbS), possibly with quartz or calcite gangue
mineral
Silicon (Industrial Grade)
Elemental Silicon (Si)
mineral
Native Copper
Native Copper (Cu)
mineral