Quartz Vein in Sedimentary Rock
Silicon Dioxide (SiO2) with host Chert or Limestone
Category
Browse mineral (treated) specimens identified by the Rock Identifier community.
Quartz Vein in Sedimentary Rock
Silicon Dioxide (SiO2) with host Chert or Limestone
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
Orthoclase Feldspar (Potassium Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
Gneiss
Gneiss (Metamorphic rock)
Granitic Gneiss
Gneiss (Metamorphic rock of granitic composition)
Granite
Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)
Chrysocolla and Malachite Beads
Hydrated copper silicates (Chrysocolla) and Copper carbonate hydroxide (Malachite)
Devil's Toenail (Fossil Oyster)
Gryphaea arcuata (Calcium Carbonate, CaCO3)
Granite
Granite (Phaneritic Quartz-Feldspar Plutonic Rock)
Milky Quartz with Mineral Inclusions
Quartz (Silicon Dioxide, SiO2)
Quartz Pebble
Quartz (Silicon Dioxide - SiO2)
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Extrusive volcanic rock)
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
Banded Gneiss
Gneiss (typically quartz, feldspar, mica, amphibole composition)
Pyrite
Iron Sulfide (FeS2)
Mica Group Minerals
There isn't a single scientific name as 'Mica' refers to a group of phyllosilicate minerals. Common scientific names include Muscovite (KAl₂ (AlSi₃O₁₀)(OH)₂), Biotite (K(Mg,Fe)₃AlSi₃O₁₀(OH)₂), Phlogopite (KMg₃AlSi₃O₁₀(OH)₂), and Lepidolite (K(Li,Al)₃(Al,Si,Rb)₄O₁₀(F,OH)₂).
Fluorite (Rainbow, Purple-Blue Tumbled)
Calcium Fluoride (CaF2)
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
Not a rock, mineral, or geological specimen
Garden Quartz (Lodalite)
Silicon Dioxide with various mineral inclusions (SiO2)
Gneiss (Cobble)
Gneiss
Fluorite Tower
Fluorite (Calcium Fluoride - CaF2)
Schist
Schist (various mineral compositions)
Sandstone (with Limonite staining)
Arenite (primarily SiO2 with FeO(OH)·nH2O)
Granite Gneiss
Gneiss (high-grade metamorphic rock)
Sandstone (likely Arkosic or Lithic)
Clastic Sedimentary Rock (SiO2 with accessory minerals)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Diorite
Diorite (Intermediate intrusive igneous rock)
Granite
Granite (Felsic Plutonic Rock)
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
Granite
Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)
Diorite
Diorite (Intermediate intrusive igneous rock)
Banded Gneiss
Gneiss (high-grade metamorphic silicate rock)
Foliated Metamorphic Rock (likely Gneiss or Schist)
Gneissic Metamorphic Rock
Granite Gneiss
Gneiss (High-grade Metamorphic Rock)
Gneiss
Gneiss (high-grade metamorphic rock)
Azurite with Malachite
Azurite: Cu3(CO3)2(OH)2 / Malachite: Cu2CO3(OH)2
Azurite in Matrix
Azurite (Cu3(CO3)2(OH)2)