Home›Rocks and Minerals›Minerals›Rarity›AbundantBrowse ByAbundantAbundantComments (0)Reader Challenges (0)AbundantFilter Results4 entriesStrunz ClassAllSilicates (1)Crystal SystemAllMonoclinic Crystal System (1)Trigonal Crystal System (2)HardnessAll5.75 to 6.25 Mohs (1)LustreAllPearly (1)Vitreous (1)ColourAllBlue or Purple (1)Brown (1)Colourless or White (1)Green (1)Grey or Black (1)Orange or Yellow (1)Red or Pink (1)UseAllGemstone (1)Formed By (Process)AllFractional Crystallization (2)Hydrothermal Mineral Deposition (2)Magmatism (3)Sedimentation (1)Volcanism (2)Weathering (1)Show ResultsBrowseCompareSelect all 4FeldsparAbundantHematiteAbundantOrthoclaseAbundantQuartzAbundantComments (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.