Gastly (Trick or Trade Halloween Series)
Cellulose-carbonaceous composite (Lignocellulose laminated with pigmentary polymers)
Mineral (Synthetic - Paper and Ink Polymorph)
Category
Mineral (Synthetic Paper And Ink Polymorph)
Browse mineral (synthetic paper and ink polymorph) specimens identified by the Rock Identifier community.
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Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Non-geological
Hand-Drawn Trading Card (Amateur Artwork)
Cellulose-based substrate with wax/graphite/ink deposit (n/a for minerals)
Organic/Synthetic Composite (Paper and Pigment)
Paper (Cellulose)
Cellulose (C6H10O5)n
Organic (Anthropogenic)
K2 Stone (or K2 Jasper)
Azurite-in-Granite (Potassium Feldspar, Quartz, Plagioclase, Muscovite, and Azurite)
igneous
Graphite
Graphite (C)
mineral
Graphite
Graphite (Native Carbon), Formula: C
Metamorphic
Graphite
Graphite (Native Carbon, C)
Mineral
Chinese Writing Stone
Porphyritic Basalt (or Andesite) with Feldspar inclusions
igneous
Graphite
Graphite (Chemical Formula: C)
Mineral (Native Element)
Calcite (Yellow/Orange variety - sometimes called Honey Calcite)
Calcite
Mineral
Calcite (commonly referred to as Orange Calcite or Honey Calcite given its color)
Calcite
Mineral
Graphite
Graphite (Carbon, C)
metamorphic
Snowflake Obsidian
Volcanic Glass with Spherulitic Cristobalite (SiO2)
igneous
Wallboard/Drywall (Gypsum-based)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
sedimentary
Snowflake Obsidian
Volcanic Glass with Spherulite inclusions (mainly Cristobalite)
igneous
Cubic Zirconia (as used in jewelry setting)
Zirconium dioxide (ZrO2)
mineral
Snowflake Obsidian
Volcanic glass with Phenocrysts (SiO2)
igneous
K2 Jasper (K2 Granite)
Azurite in Granite (K(Mg,Fe)3AlSi3O10(OH,F)2 + Cu3(CO3)2(OH)2)
igneous
Sandstone with Quartz/Calcite druse
Arenite with druse (SiO2 or CaCO3)
sedimentary
Polished fossil ammonite slice
Ammonoidea (commonly polished juvenile ammonite or nautiloid-like cephalopod fossil)
fossil
Snowflake Obsidian
Spherulitic Volcanic Glass (primarily SiO2)
igneous
Kyanite
Kyanite (Al2SiO5)
mineral
Dendritic Opal
Opalized Chalcedony with Manganese Inclusions (SiO2 · nH2O)
mineral
Sandstone (Pet Rock)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Clastic sedimentary rock
sedimentary
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Snowflake Obsidian
Hydrated Volcanic Glass (primarily SiO2) with Cristobalite inclusions
igneous
Quartz pebble with surface markings
Silicon Dioxide (SiO2)
mineral
Kyanite
Kyanite (Al2SiO5)
mineral
Kyanite blade
Kyanite, Al₂SiO₅
mineral
Kyanite in Quartz
Kyanite (Al2SiO5) with Quartz (SiO2)
metamorphic
Snowflake Obsidian
Obsidian with Cristobalite inclusions (SiO2)
igneous
K2 Jasper
Azurite in Granite
igneous
Blue-gray kyanite crystal
Kyanite (Al₂SiO₅)
mineral
Polished feldspar-rich stone, possibly amazonite
Likely microcline feldspar (KAlSi₃O₈); identification is uncertain from the image
mineral
Blue mineral specimen, likely kyanite
Kyanite — Al₂SiO₅
mineral
Seashell Fragment
Calcium Carbonate (CaCO3) in the form of Aragonite or Calcite
mineral
Snowflake Obsidian
Vitreous Volcanic Rock (Amorphous Silicate), SiO2
igneous
Faceted Gemstone
Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass
gemstone
Kyanite
Kyanite (Al2SiO5)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral