Stainless Steel Spoon
Iron-Chromium Alloy (Fe + Cr + Ni)
Category
Browse man made metamorphic style composite specimens identified by the Rock Identifier community.
Stainless Steel Spoon
Iron-Chromium Alloy (Fe + Cr + Ni)
Quartz Crystal
Silicon Dioxide (SiO2)
Quartz Pebble
Quartz (SiO2)
Feldspar
Triclinic or Monoclinic Tectosilicate (e.g., KAlSi3O8)
Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Lavender Jadeite
Jadeite ($NaAlSi_2O_6$)
Sandstone (Ferruginous)
Clastic Sedimentary Rock (Sandstone)
Granite
Phaneritic Felsic Igneous Rock
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
Basalt
Basalt
Sandstone (likely Arkosic or Lithic Sandstone)
Clastic Sedimentary Rock (SiO2 with assorted minerals)
Sandstone
Arenite (primarily Quartz Arenite)
Sandstone
Arenite (primarily SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
Sandstone
Arenite
Sandstone (Ferruginous)
Arenite (Fe2O3 enriched)
Granite
Felsic Intrusive Igneous Rock
Basalt
Basalt (principally Plagioclase and Pyroxene)
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
Sandstone
Arenite (primarily SiO2)
Granite
Granite (Phaneritic igneous rock)
Quartzite
Metamorphic Quartzite (SiO2)
Lapis Lazuli
Lapis Lazuli (Metamorphic rock primarily composed of Lazurite, Calcite, and Pyrite)
Slate
Slate (foliated metamorphic rock composed mainly of quartz, illite, and chlorite)
Quartzite Pebble
Metamorphic Quartz (SiO2)
Quartzite
Metamorphic Quartz (SiO2)
Chert / Greenstone
Silicon Dioxide (SiO2) with impurities
Granite
Granite (a plutonic igneous rock composed primarily of quartz and feldspar)
Potassium Feldspar
K-Feldspar (Orthoclase/Microcline), KAlSi3O8
Blue Dumortierite in Quartz
Al7(BO3)(SiO4)3O3 (Dumortierite)
Quartz with Schist Inclusion
Crystalline Silicon Dioxide (SiO2) with Muscovite/Biotite Schist
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Eclogite
Eclogite (Omphacite-Garnet Rock)
Potassium Feldspar (Orthoclase / Microcline)
KAlSi3O8
Quartz Pebble
Silicon Dioxide (SiO2)
Magnetite / Hematite rich ore
Magnetite (Fe3O4) or Hematite (Fe2O3)
Granite fragment
Granite
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3