Bauxite (Aluminum Ore)
Hydrated aluminum oxides, primarily Al(OH)3, AlO(OH)
Category
Browse mineral like byproduct specimens identified by the Rock Identifier community.
Bauxite (Aluminum Ore)
Hydrated aluminum oxides, primarily Al(OH)3, AlO(OH)
Gneissic Granite
Granite Gneiss
Gneiss (Banded Gneiss)
Gneiss
Quartz Geode
Silicon Dioxide (SiO2)
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
Garnet
Pyrope or Almandine (X3Y2(SiO4)3)
Gneiss
Gneiss
Quartz Geode
SiO2 (Silicon Dioxide)
Quartz-veined Granite or Gneiss Pebble
Silicate-rich metamorphic rock fragment
Sandstone
Clastic Sedimentary Rock
Gneiss
Gneiss
Greenstone
Metabasalt / Chlorite-actinolite-epidote schist
Schist
Mica Schist (Metamorphic rock)
Kidney Stone (Calcium Oxalate / Uric Acid)
Calcium Oxalate Monohydrate (Whewellite) / Calcium Oxalate Dihydrate (Weddellite)
Carved Stone Turtle
Carved Soapstone and Quartz
Muscovite Mica
Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2
Gneiss
Gneiss (Metamorphic Rock)
Sandstone
Arenite (SiO2 based typically)
Blue Aventurine
Quartzite with inclusions of Dumortierite (SiO2 + Al7(BO3)(SiO4)3O3)
Limonite / Ironstone
Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O
Schist
Schist
Dendritic Quartz
Silicon Dioxide (SiO2) with Manganese Oxide inclusions
Kimberlite
Ultramafic igneous rock
Granitic Pegmatite
Pegmatitic Granite
Greenschist
Greenschist (composed mainly of chlorite, epidote, actinolite, and albite)
Green Garden Quartz (Phantom Quartz)
Silicon Dioxide (SiO2) with Chlorite inclusions
Tree Agate
Chalcedony (SiO2)
Granodiorite
Granodiorite
Quartz Geode
Silicon Dioxide (SiO2)
Orange Quartz with Epidote
Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate hydroxide (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))
Gneiss (Hornblende/Biotite Gneiss)
Foliated Metamorphic Rock (Quartz-Feldspar-Amphibole/Mica matrix)
Ruby
Corundum (Aluminium Oxide with Chromium impurities, Al2O3:Cr)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Sandstone
Arenite
Plume Agate or Moss Agate
Agate (SiO2)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
Obsidian
Obsidian (Volcanic Glass, ~70% SiO2)
Porphyritic Igneous Rock with Iron Oxide Weathering
Weathered Porphyry (containing Quartz, Feldspar, Amphibole/Biotite, and Hematite/Limonite)
Pegmatite (Granitic)
Granite Pegmatite
Gneiss
Gneiss
Gneiss (Metamorphic Rock)
Gneiss