Citrine
Citrine (Silicon Dioxide - SiO2)
Category
Browse mineral (occurring as a rolled clast) specimens identified by the Rock Identifier community.
Citrine
Citrine (Silicon Dioxide - SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Calcite
Calcite (Mineral, Calcium Carbonate - CaCO3)
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing Phyllosilicate)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
Dyed Howlite
Borosilicate hydroxide (Ca2B5SiO9(OH)5)
Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Azurite
Azurite (Copper Carbonate Hydroxide), Cu3(CO3)2(OH)2
Lepidolite
Lepidolite - K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
Sodalite
Sodalite (Sodium Aluminum Silicate Chloride), Na8(Al6Si6O24)Cl2
Pyrite (Fool's Gold) Ore
Iron Disulfide (FeS2)
Sandstone
Arenite (SiO2 based with quartz, feldspar, or lithic fragments)
Quartzite with Quartz Vein
Quartzite (SiO2)
Rose Quartz
Rose Quartz (SiO2 with traces of Titanium, Iron, or Manganese)
Amazonite in Matrix
Potassium Feldspar (Microcline), KAlSi3O8
Rose Quartz
Silicon Dioxide (SiO2)
Green Aura Quartz (Titanium treated Kyanite or Quartz)
Silicon Dioxide (SiO2) or Aluminum Silicate (Al2SiO5) with Titanium/Metal Oxide coating
Fluorite
Calcium Fluoride (CaF2)
Quartz with impurities or Host Rock
SiO2 (Silicon Dioxide) with mixed silicates
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
Blue Chalcedony
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Native Gold (Placer Gold)
Native Gold (Au)
Gneiss (with Quartzite and Mica)
Gneiss
Rose Quartz
Silicon Dioxide (SiO2)
Native Copper
Native Copper (Cu)
Smoky Quartz
Silicon Dioxide (SiO2)
Peridot (Olivine)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Rose Quartz
Silicon Dioxide (SiO2) with trace elements of titanium, iron, or manganese
Red Jasper
Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)
Blue Sapphire
Corundum (Al2O3)
Rose Quartz
Rose Quartz (Silicon Dioxide, SiO2)
Azurite-Malachite (often a mixed specimen)
Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2(CO3)(OH)2. The specimen appears to be a natural mixture or intergrowth of these two minerals.
Greenstone / Epidosite
Epidosite (Metasomatic rock consisting mainly of Epidite Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH) and Quartz)
Greenschist
Greenschist (containing Chlorite, Epidote, and Actinolite)
Marble (Sculculpted)
Metamorphosed Limestone (primarily CaCO3)
Agate
Chalcedony (Microcrystalline Quartz) - SiO2
Milky Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese