Granitic Pegmatite
Coarse-grained Igneous Rock (Granitic composition: KAlSi3O8, SiO2)
Category
Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.
Granitic Pegmatite
Coarse-grained Igneous Rock (Granitic composition: KAlSi3O8, SiO2)
Garden Quartz (Lodalite)
Silicon Dioxide (SiO2) with mineral inclusions
Greenschist / Greenstone
Greenschist facies metabasite
Pink Granite
Felsic intrusive igneous rock
Amygdaloidal Basalt
Amygdaloidal Basalt
Vanadinite
Lead Chlorovanadate - Pb5(VO4)3Cl
Diamond in Kimberlite
Kimberlite host rock with C (Carbon) inclusion
Banded Gneiss (with Quartz Vein)
Gneiss (Metamorphic rock of varying mineralogy)
Kimberlite with Diamond
Kimberlite (Porphyritic Peridotite)
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)
Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Obsidian
Volcanic Glass (SiO2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite mica)
Blue Quartzite (Blue Aventurine / Dumortierite Quartz)
Quartzite with inclusions (SiO2 with AlAl4BSi3O18)
Lepidolite on Matrix
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
Pegmatite (Granitic)
Granitic Pegmatite containing Quartz, Feldspar, and Tourmaline (Schorl)
Yellow Jasper
Silicon Dioxide (SiO2) with goethite or limonite inclusions
Rose Quartz
Silicon dioxide (SiO2)
River Stone / Pebble
Clastic Sediment (composed largely of Quartz, Feldspar, and various rock fragments)
Greenschist (Greenstone)
Chlorite Schist / Greenschist Facies Rock
Sugilite
Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)
Limonite and Goethite on Gossan
FeO(OH)·nH2O
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Schist
Mica Schist
Greenschist (Greenstone River Pebble)
Greenschist (Chlorite Schist)
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Dalmation Stone (Dyed)
Peralkaline rhyolite
Quartz Vein in Pelite (Metamorphic Rock)
Hydrothermal Quartz Veining in Metasedimentary Rock (SiO2)
Lepidolite on Pegmatite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Fossilized Bone Fragment
Permineralized Skeletal Element (Likely Vertebrate)
Uraninite (Pitchblende)
Uranium dioxide (UO2)
Schist
Mica Schist
Greenschist
Greenschist (Chlorite-actinolite schist)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Fossil Shark Tooth (embedded in matrix)
Lamniformes (likely Cretalamna or Squalicorax) within phosphatic/calcareous matrix
Ironstone with Pyrite
Ferruginous Sandstone (Fe2O3) with minor Sulfide minerals (FeS2)
Megalodon Shark Tooth Fossil
Otodus megalodon