Limestone
Calcareous Sedimentary Rock (CaCO3)
sedimentary
Category
Synthetic Polymer (Polylactic Acid)
Browse synthetic polymer (polylactic acid) specimens identified by the Rock Identifier community.
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Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sandstone with Foliose Lichen
Arenite (Rock matrix) with Xanthoparmelia or Flavoparmelia (Lichen genus)
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Green Fluorite
Calcium fluoride (CaF2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite with Limonite/Goethite Alteration (Pseudomorph)
Iron Sulfide (FeS2) transitioning to Hydrated Iron Oxides (FeO(OH)·nH2O)
mineral
Fluorite
Calcium fluoride (CaF2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Sulfur
Native Sulfur (S)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Banded Agate
Cryptocrystalline Quartz (SiO2)
mineral
Galena
Lead Sulfide (PbS)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite (Rainbow Fluorite)
Fluorite (Calcium Fluoride, CaF2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Amber
Succinite (C10H16O)
mineraloid
Fluorite
Calcium Fluoride (CaF2)
mineral
Pyrite (Iron Pyrite)
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Amber
Succinates (C10H16O)
mineraloid
Auriferous Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Pyrite-bearing Schist
Pyritic Quartz-Mica Schist with FeS2 inclusion
metamorphic
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Auriferous Quartz or Pyritic Ore
Iron Pyrite (FeS2) or Native Gold (Au) in Matrix
mineral
Fluorite Carving
Fluorite (Calcium Fluoride, CaF2)
mineral
Pyrite (Fool's Gold) Cube
Iron Sulfide (FeS2)
mineral