Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Category
Browse mineral with metamorphic or igneous host specimens identified by the Rock Identifier community.
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Copper Ore with Chrysocolla and Azurite
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / Cu3(CO3)2(OH)2 (Azurite)
Fluorite
Calcium Fluoride (CaF2)
Quartz
Quartz (SiO2 - Silicon Dioxide)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Clear Quartz / Rock Crystal
Silicon Dioxide (SiO2)
Quartz (Druzy)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Rough Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz Crystal
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Fluorite (Purple variety)
Calcium Fluoride (CaF2)
Limonite-stained Quartz
Silicon Dioxide (SiO2) with Iron Oxide/Hydroxide (FeO(OH)·nH2O) staining
Lapis Lazuli
Na8[Al6Si6O24]Sn (Lazurite-rich metamorphic rock)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Blue Apatite
Fluorapatite / Chlorapatite [Ca5(PO4)3(F,Cl,OH)]
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Flower Agate
Silicon Dioxide (SiO2) with Plume Inclusions
Pink Opal
Amorphous Hydrous Silica (SiO2·nH2O)
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
River Pebble (Gneiss or Granite)
Metamorphic Rock (likely Gneiss or Granitic composition)
Fire Opal (in Matrix)
Hydrated Silica (SiO2·nH2O)
Garnet
Garnet Group (Silicate Minerals), formula varies e.g., Almandine Fe3Al2(SiO4)3
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
Rutilated Quartz
Quartz (SiO2) with Rutile (TiO2) inclusions
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
Dendritic Agate
Silicon Dioxide with Manganese or Iron Oxide inclusions (SiO2)
Pink Quartz (Rose Quartz variant)
Silicon Dioxide (SiO2)
Dolomite or Limestone (Carbonate Rock)
CaMg(CO3)2 (Dolomite) or CaCO3 (Limestone / Calcite)
Granitic Gneiss
Gneiss (Metamorphic rock of granitic composition)
Pyrite (Iron Pyrites)
Iron Sulfide (FeS2)
Amethyst on Agate/Basalt Matrix
Silicon Dioxide (SiO2) with iron impurities
Carnelian
Carnelian (Silicon Dioxide - SiO2)
Ferruginous Quartz
Iron-stained Quartz (Silicon Dioxide + Fe2O3 / FeO(OH))
Turquoise (Blue Howlite / Magnesite imitation)
CuAl6(PO4)4(OH)8·4H2O (for natural Turquoise); Ca2B5SiO9(OH)5 (for Howlite)
Gneiss
Gneissic Metamorphic Rock
Epidosite (Epidote-rich rock)
Epidosite (consisting primarily of Epidote: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))
Graphite
Graphite (Native Carbon), Formula: C