Desert Rose (Gypsum Variety)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Category
Industrial Byproduct
Browse industrial byproduct specimens identified by the Rock Identifier community.
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Granite Pegmatite
Coarse-grained Granite (SiO2 - Aluminum and Alkalies)
igneous
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Carborundum
Silicon Carbide (SiC)
mineral
Garnet
Garnet group (X3Y2(SiO4)3)
mineral
Diamond
Diamond (pure Carbon, C)
mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Limonite (Iron Ore)
Goethite and related iron hydroxides (FeO(OH)·nH2O)
mineral
Potassium-Rich Silicate Clay (inferred from biological context)
Phyllosilicate group (likely Illite or Smectite within surrounding soil substrate)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Anthracite Coal
Anthracite (Carbon based fossil fuel)
metamorphic
Concrete rubble
Anthropogenic conglomerate
sedimentary
Synthetic Resin / Plastic Figurine
Synthetic Polymer (Copolymer of Polyethylene or Resin)
Mineraloid-like Synthetic Material
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Raw Diamond
Carbon (C)
mineral
Pumice
Pumice (a highly vesicular volcanic glass)
igneous
White Quartz Sphere
Silicon Dioxide (SiO2)
mineral
Man-made Jewelry Charm (Enameled Metal)
Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.
Synthetic / Manufactured Artifact
Sandstone-based Concrete Fragment
Cementitious Composite with Sedimentary Aggregate
sedimentary (man-made/anthropogenic)
Muscovite Mica (in Quartz matrix)
Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(F,OH)2)
mineral
Diamond (Faceted Gemstone)
Native Carbon (C)
mineral
Chert / Yellow Jasper
Silicon Dioxide (SiO2)
sedimentary
Iron Ore (Hematite/Goethite)
Ironstone (Fe2O3 / FeO(OH))
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Kimberlite with Diamonds
Kimberlite (ultramafic potassic igneous rock)
igneous
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Quartz (Iron-Stained)
Crystalline Silicon Dioxide (SiO2)
mineral
Quartz (Agate/Chalcedony)
Silicon Dioxide (SiO2)
mineral
Chalcedony Pebble
Cryptocrystalline Quartz (SiO2)
mineral
Chert (Iron-Stained)
Chert (Silicon Dioxide, SiO2)
sedimentary
Red Garnet (likely Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Peridot
Olivine ((Mg, Fe)2SiO4)
mineral
Magnetic Sand Grain / Magnetite Pellet
Magnetite (Fe3O4)
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Quartz or possibly Jasper/Chert. Looks like a tumbled or water-worn stone.
SiO2 (Silicon Dioxide)
Mineral or Sedimentary (if chert)
Smoky Quartz with Feldspar
SiO2 (Quartz) with KAlSi3O8 (Potassium Feldspar)
mineral
Bauxite (Laterite)
Hydrated aluminum oxides (Al2O3·nH2O)
sedimentary
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated Iron Oxide)
mineral
Crushed Stone (Gravel/Aggregates)
Crushed rock aggregate (varied composition including Granite, Limestone, and Quartz)
sedimentary and igneous (mixed)
Banded Iron Formation (Jaspillite)
Banded Iron Formation (BIF)
sedimentary
Drill Core Samples (Varied Lithology)
Multi-lithological core samples (containing potential granite, marble, and phyllite/schist sequence)
igneous, sedimentary, and metamorphic