Man Made Material (Anthropogenic 'Mineraloid')

Browse man made material (anthropogenic 'mineraloid') specimens identified by the Rock Identifier community.

Gold (Elemental Metal)

Gold (Au)

Mineral

Titanium Coated Aura Quartz (Apple Aura Quartz)

Silicon Dioxide (SiO2) with Metallic Vapor Deposition Coating

Mineral (Man-modified)

Marble

Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.

Metamorphic Rock

Tektite (specifically Indochinite)

Tektite (Natural silica glass)

Mineraloid (Impact glass)

Red Jasper

Jasper (a variety of Chalcedony, SiO₂)

Mineraloid (cryptocrystalline quartz)

Chert / Flint

Chert (varieties include Flint)

Sedimentary

Quartz (Engineered Quartz Surface)

Silicon Dioxide (SiO2) based composite

mineral (man-made composite)

Chalk

CaCO3 (primarily Calcium Carbonate), biogenic sedimentary rock

Sedimentary

Slag Glass

Amorphous Silica / Glass Slag

industrial byproduct (anthropogenic rock-like material)

Chert Pebble/Nodule

Chert (a microcrystalline or cryptocrystalline sedimentary form of quartz, SiO2)

Sedimentary

Blue Goldstone

Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)

Synthetic (Man-made Glass)

Chert

Chert (microcrystalline quartz)

sedimentary

Obsidian

Obsidian (volcanic glass, amorphous silica rich rock)

Igneous

Fossiliferous Limestone

Limestone (composed primarily of calcite with included fossils CaCO3)

Sedimentary

Beaded Jewelry (Assorted Gemstones)

Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ

Mineral, Jewelry

Sea Glass (Frosted Glass)

Amorphous Silica (SiO2) with various metal oxide impurities

Man-made material (Anthro-lithic product)

Mixed Gemstone Beaded Jewelry

Various minerals (e.g., Quartz varieties like Rose Quartz, Amethyst; Peridot; Garnet; etc.)

Mineral

Rose Quartz Carving

Quartum roseum (Variety of Quartz, SiO2)

Mineral

Chert (variant of Flint)

Chert (SiO2)

Sedimentary

Blue Slag Glass

Amorphous Silica (Industrial byproduct)

Antropogenic (Man-made glass byproduct)

Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)

N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)

Organic (if resin) or Synthetic (if glass); simulating Sedimentary or Metamorphic (for natural stones)

Agate (specifically, multi-colored or pastel-dyed agate)

Silicon dioxide (SiO2) - specifically, a cryptocrystalline variety of quartz known as Chalcedony, with banding classified as Agate. (If it were Fluorite, the chemical formula would be Calcium Fluoride - CaF2).

Mineral