Amygdaloidal Basalt
Basalt (Igneous Volcanic Rock with secondary mineral infilling)
Category
Browse mineral like biological tissue specimens identified by the Rock Identifier community.
Amygdaloidal Basalt
Basalt (Igneous Volcanic Rock with secondary mineral infilling)
Montana Moss Agate
Chalcedony (SiO2) with Manganese/Iron oxide inclusions
Fluorite Geode
Calcium Fluoride (CaF2)
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
Porous Quartzite
Metamorphosed Quartz-rich Sandstone (SiO2)
Banded Iron Formation (Chert/Jasper)
Banded Iron Formation (BIF)
Amygdaloidal Rhyolite
Amygdaloidal felsic extrusive rock
Obsidian
Volcanic Glass (70-75% SiO2 with MgO and Fe3O4)
Sandstone
Arenite
Grape Agate
Chalcedony (Silicon Dioxide, SiO2)
Orthoclase Feldspar
Potassium Feldspar (KAlSi3O8)
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing Mica)
Chrysocolla
Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O
Quartz Mica Schist
Mica-Quartz Schist (Chemical: SiO2 + KAl2(AlSi3O10)(OH)2)
Calcite on Host Rock
Calcium Carbonate (CaCO3)
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese/Iron inclusions
Amazonite
K(AlSi3O8), Microcline (potassium feldspar)
Sandstone (with concrete/human-made layer)
Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)
Diorite
Diorite (intermediate intrusive igneous rock)
Petrified Wood
Silicified Wood (SiO2)
Dalmatian Jasper
Peralkaline Quartz-Feldspar Igneous Rock with Arfvedsonite
Septarian Nodule (Yellow Jasper variety)
Septarian Nodule (comprising Calcite, Aragonite, and Limestone/Bentonite)
Schist
Mica Schist (primarily Muscovite and Quartz)
Azurite
Azurite (Cu3(CO3)2(OH)2)
Blue Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Cobaltian Calcite
Cobalt-bearing Calcite (Ca,Co)CO3
Eudialyte
Na15Ca6(Fe2+,Mn2+)3Zr3(Si,Nb)Si25O73(O,OH,H2O)3(Cl,OH)2
Yellow Ochre / Limonite
FeO(OH)·nH2O (Hydrated Iron Oxide Mix)
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
Sandstone
Arenite (SiO2 principal)
Cuprite
Cuprite (Copper(I) oxide, Cu2O)
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Sandstone
Arenite (Clastic Sedimentary Rock)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Diorite
Intermediate plutonic igneous rock
Dalmatian Jasper
Microcrystalline Quartz with Arfvedsonite and Tourmaline inclusions
Sandstone
Clastic Sedimentary Rock
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite
Sandstone (lithic wacke/conglomerate mix)
Clastic Sedimentary Rock (SiO2 with lithic fragments)
Yellow Aventurine
Silicon Dioxide (Quartz with inclusions of Mica or Pyrite), SiO2
Purple Lepidolite with Quartz
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Yellow Ochre / Limonite
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)