Hematite
Iron(III) oxide (Fe2O3)
Category
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Hematite
Iron(III) oxide (Fe2O3)
Pyrite
Iron Sulfide (FeS2)
Hematite
Iron(III) oxide (Fe2O3)
Pyrite
Iron Sulfide (FeS2)
Green Jadeite
NaAlSi2O6 (Sodium Aluminum Silicate)
Chrysocolla (Copper Ore)
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2
Azurite
Azurite (Copper Carbonate Hydroxide), Cu3(CO3)2(OH)2
Gold Ore in Quartz/Matrix
Native Gold (Au) in Quartz (SiO2) matrix
Green Chert
Microcrystalline Quartz (SiO2)
Jasper (Iron-rich)
Silicon Dioxide (SiO2) with Fe2O3 (Hematite) inclusions
Unakite (Epidotized Granite)
Unakite; primarily composed of Epidote (Ca2(Al,Fe)3(SiO4)3(OH)), Orthoclase (KAlSi3O8), and Quartz (SiO2)
Ironstone / Hematite
Iron(III) oxide (Fe2O3)
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Native copper-bearing rock (probable copper ore)
Native copper (Cu), likely with copper sulfide/oxide minerals in a host rock
Fuchsite
Chromium-bearing Muscovite - K(Al,Cr)2(AlSi3O10)(OH)2
Banded Agate
Silicon Dioxide (SiO2) - Variety Agate
Aquamarine
Beryl (Be₃Al₂Si‑₆O₁‑₈)
Fuchsite
K(Al,Cr)2(AlSi3O10)(OH)2 (Chromium-rich Muscovite)
Rhodonite
Rhodonite (Manganese silicate), (Mn,Fe,Mg,Ca)SiO3
Quartzite
Quartzite (primarily SiO2)
Small pale mineral fragment
Unidentified; possibly quartz, calcite, or feldspar
Flint
SiO2 (Microcrystalline Quartz / Chert)
Red Jasper
Microcrystalline Quartz (Chalcedony), SiO2
Jasper
Silicon Dioxide (SiO2) with impurities
Yellow Jasper
Silicon Dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron impurities
Jasper
Silicon Dioxide (SiO2)
Green Opal / Common Opal
Hydrated Silicon Dioxide (SiO2·nH2O)
Quartz (Grain)
Silicon Dioxide (SiO2)
Ruby in Zoisite
Anyolite (Ruby in Zoisite)
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
Quartz
Quartz (SiO₂ - Silicon Dioxide)
Blue Quartz
Silicon Dioxide (SiO2)
Quartz (Common or Milky)
Silicon Dioxide (SiO2)
Clear Quartz Point
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Zircon
Zircon (Zirconium Silicate - ZrSiO4)
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
Quartz
Crystalline Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)