Amber
Succinite (Fossilized Tree Resin)
mineraloid
Category
Mineral (Specifically A Mineraloid)
Browse mineral (specifically a mineraloid) specimens identified by the Rock Identifier community.
Learn about Mineral (Specifically A Mineraloid) in the encyclopedia
View all →
Precious Opal
Hydrated Silica (SiO2·nH2O)
mineral
Amber
Succinite (fossilized resin); C10H16O
mineraloid
Boulder Opal
Hydrated Silica (SiO2·nH2O)
mineraloid
Obsidian
Volcanic Glass (Amorphous Silicon Dioxide)
igneous
Obsidian
Volcanic glass
igneous
Obsidian
Volcanic Glass (felsic composition)
igneous
Obsidian
Volcanic Glass (Silicon Dioxide with impurities)
igneous
Common Opal with Host Rock
Opal (Hydrated silica, SiO2·nH2O)
mineral
Amber
Succinite (fossilized resin)
mineraloid
Obsidian
Obsidian (Volcanic Glass)
igneous
Amber
Succinates (C10H16O)
mineraloid
Amber
Succinite (organic fossilized resin)
mineraloid
Larimar
NaCa2Si3O8(OH)
gemstone
Kidney Stone
Nephrolithiasis (Calcium Oxalate, Hydroxyapatite, or Uric Acid)
mineral
Biotite (Black Mica)
Biotite - K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Tumbled Moonstone
Feldspar (Orthoclase/Albite), KAlSi3O8
mineral
Satin Spar (Satin Spar Selenite)
Gypsum (CaSO4·2H2O)
mineral
Amber
Succinite
mineraloid
Amber
Succinite (C10H16O)
mineraloid
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Amber
Succinate (Succinite for Baltic varieties)
mineraloid
Amber
Succinite (organic hydrocarbon)
mineraloid
Limonite (Ironstone) Concretion
FeO(OH)·nH2O (Hydrous ferric oxide)
sedimentary
Amber / Copal
Fossilized Tree Resin (Succinate)
Mineraloid
Precious Opal
SiO2·nH2O (Hydrated Silicon Dioxide)
mineraloid
Amber
Succinite (C10H16O)
mineraloid
Limonite (Yellow Ochre)
Limonite (an amorphous mixture of hydrated iron oxides, primarily FeO(OH)·nH2O)
mineral
Pearl
Calcium Carbonate (Aragonite) with Conchiolin; formula: CaCO3
mineral
White Precious Opal
Hydrated Silica (SiO2·nH2O)
mineral
Opal
Hydrated Amorphous Silica (SiO2·nH2O)
mineral
Amber
Succinite (Carbon-based organic compound; approximate formula C10H16O)
Mineraloid
Snowflake Obsidian
Spherulitic Volcanic Glass (SiO2 + impurities)
igneous
Crazy Lace Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Common Opal in Host Rock
Hydrated Silica (SiO2·nH2O)
mineraloid
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
not a rock
Amber (Tumbled/Polished)
Succinite (Fossilized Tree Resin)
mineraloid
Amber
Succinite (C10H16O)
mineraloid
Amber
Succinite (C10H16O)
mineraloid
Amber
Succinite (Resinous fossilized tree sap)
Mineraloid
Black Opal (Triplet)
Hydrated Silica (SiO2·nH2O)
mineral
Moldavite
Silica glass with small amounts of aluminum, iron, and other elements
Mineraloid / Tektite