Home›Rocks and Minerals›Minerals›Strunz Class›Oxides and HydroxidesBrowse ByOxides and HydroxidesOxides and HydroxidesComments (0)Reader Challenges (0)Oxides and HydroxidesFilter Results5 entriesCrystal SystemAllCubic Crystal System (2)Orthorhombic Crystal System (1)Trigonal Crystal System (2)HardnessAll5.75 to 6.25 Mohs (1)7.5 to 8.5 Mohs (2)LustreAllEarthy (1)Metallic (1)Vitreous (2)ColourAllBlue or Purple (1)Brown (2)Green (2)Grey or Black (3)Orange or Yellow (2)Red or Pink (2)Where FoundAllAfghanistan (1)Australia (1)Brazil (1)China (1)Greece (1)India (2)Madagascar (2)Myanmar (2)Nigeria (1)Pakistan (1)Russia (2)Sri Lanka (3)Tanzania (2)United States (1)Vietnam (1)Zimbabwe (2)RarityAllCommon (1)Rare (1)Uncommon (1)UseAllGemstone (2)Ore or Metal Extraction (1)Formed By (Process)AllFractional Crystallization (2)Magmatism (2)Metamorphism (2)Metasomatism (1)Sedimentation (1)Serpentinization (1)Volcanism (1)Weathering (1)Show ResultsBrowseCompareSelect all 5ChrysoberylOxides and HydroxidesCorundumOxides and HydroxidesHematiteOxides and HydroxidesMagnetiteOxides and HydroxidesSpinelOxides and HydroxidesComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.