Sugilite
Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)
mineral
Category
Organic Material (Likely A Fruit Or Berry)
Browse organic material (likely a fruit or berry) specimens identified by the Rock Identifier community.
Chert (specifically Red Chert/Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Unidentifiable Specimen
Undetermined
Unknown
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Sandstone
Sandstone (Sedimentary rock composed of silicate grains)
sedimentary
Sedimentary Sandstone (Sandstone Slab)
Arenite (SiO2 with Fe2O3 staining)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Citrine (likely Heat-Treated)
Quartz (Silicon Dioxide, SiO2)
mineral
Jade (likely Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)
Mineral
Coquina / Fossiliferous Limestone
Bioclastic Limestone (CaCO3)
sedimentary
Nuummite
Orthoamphibole (Anthophyllite-Gedrite composition)
metamorphic
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Ironstone Concretion (Ironstone Gourd)
Limonite/Goethite Concretion (FeOO(H))
sedimentary
Ferrochrome Slag
Anthropogenic silicate/oxide glass (Complex silicate matrix with Cr-Fe-Si inclusions)
Industrial byproduct (often confused with igneous rocks or meteorites)
Baltic Amber (Butterscotch or Egg Yolk Variety)
Succinite (chemical formula: C10H16O)
Organic Gemstone (not a rock or mineral)
Jasper with Agate and Quartz Inclusions
Silicon Dioxide (SiO2) - Chalcedony / Quartz aggregate
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Amber
Succinite (fossilized tree resin)
mineraloid
Amber
Succinite (with empirical formula approximately C10H16O)
Organic Mineraloid
Concrete Rubble with Aggregate
Hardened Portland Cement Paste with Coarse Aggregate
Anthropogenic (Man-made)
Tufa (Limestone)
Calcareous Tufa (CaCO3)
sedimentary
Sandstone
Arenite
sedimentary
Dendritic Agate / Moss Agate
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
mineral
Amber
Resinite (Succinite if from the Baltic); Chemical Formula: C10H16O (approximate)
Organic Diamond/Gemstone (often associated with Sedimentary sequences)
Basalt
Basalt (composition of plagioclase feldspar and pyroxene)
igneous
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Banded Calcite (Mexican Onyx)
Calcium Carbonate (CaCO3)
sedimentary
![Chrysocolla (with Quartz and Azurite) (Hydrated copper phyllosilicate mineral [Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O)]) — mineral](https://media.rockidentification.com/201b7890-f15a-45aa-9603-fb073bb0435d-thumbnail.jpg)
Chrysocolla (with Quartz and Azurite)
Hydrated copper phyllosilicate mineral [Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O)]
mineral
Moss Agate
Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide
mineral
Limestone
Calcareous sedimentary rock (primarily Calcium Carbonate, CaCO3)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Amber
Succinite (specifically for Baltic amber; fossilized tree resin)
Organic (Sedimentary-associated)
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Basalt
Basalt
igneous
Amber
Succinite (a fossilized organic resin containing succinic acid)
mineraloid
Amber
Succinite (fossilized resin)
Organic Mineraloid