Gold Mineral
Native Gold (Au)
mineral
Category
Mineral Like Biological Tissue
Browse mineral like biological tissue specimens identified by the Rock Identifier community.
Learn about Mineral Like Biological Tissue in the encyclopedia
View all →
Blue Apatite
Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Petrified Wood
Silicified Wood (SiO2)
fossil
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Sandstone (Yellow/Siltstone variant)
Arenite (SiO2 primarily)
sedimentary
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Sandstone
Arenite
sedimentary
Petrified Wood
Silicified wood (Quartz, SiO2)
metamorphic
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Sandstone (with Iron Staining)
Sandstone (mainly Quartz, SiO2, with Iron Oxides like Goethite/Hematite)
sedimentary
Obsidian
Volcanic Glass (70-75% SiO2)
igneous
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Quartz fragment (Pebble)
Silicon Dioxide (SiO2)
mineral
Snowflake Obsidian
Volcanic Glass with Cristobalite Inclusions
igneous
Quartz pebble
Silicon dioxide (SiO2)
Mineral
Geode (Unopened)
Crystalline Quartz Geode (SiO2)
sedimentary
Tree Agate
Chalcedony (SiO2)
gemstone
Greenstone / Serpentinite
Serpentinite (composed primarily of minerals from the serpentine group Mg3Si2O5(OH)4)
metamorphic
Limonite or Ironstone Nodule
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
sedimentary
Banded Onyx (Mexican Onyx / Travertine)
Calcite (CaCO3) - Banded Travertine
sedimentary
Greenstone
Metabasalt / Metamorphosed Igneous Rock
metamorphic
Chert (Cream Variety)
Microcrystalline silica (SiO2)
sedimentary
Halite
Sodium Chloride (NaCl)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Iolite (Cordierite)
Magnesium Iron Aluminum Silicate (Mg,Fe)2Al4Si5O18
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Spherulitic Agate / Moss Agate
Chalcedony (SiO2) with mineral inclusions
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Gneiss
Gneissic Metamorphic Rock
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (quartz-feldspar-biotite gneiss)
metamorphic
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Sandstone
Sedimentary Rock (Quartz arenite or arkose)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone with Dendritic Inclusions
Quartzose Sandstone
sedimentary
Stromatolite
Laminated biogenic sedimentary structure (Cyanobacteria)
sedimentary
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Green Aventurine and Clear Quartz Bracelet
Quartz variety with Fuchsite inclusions (Aventurine) and pure Silicon Dioxide (SiO2)
gemstone