Assignment: Mineral IdentificationInvestigation30Mineral Identification Data TableSample NumberColorCleavage orFractureLuster252627137 23AnalysisSample7: _________________________Sample13: _______________________Sample23: _______________________Sample25: _______________________Sample26: ______________________Sample27: ______________________Questions1. Whichmineral above would be the most difficult to scratch?2. Givetwo examples of minerals that have a property in common.3. Couldyou have identified any of the minerals after having described only a few,rather than all, of the properties you tested? If so, give an example.4. Whyis it still a good idea to test more properties than might be necessary?Mineral Identification KeyMineral Identification KeyMineral NameColorStreakCleavage or FractureHardnessLusterSpecial PropertiesHematiteBlack or redRed-brownFracture1–6.5MetallicMagneticGalenaLead-grayGray-blackCleavage2.5–3MetallicHeavySulfurPale yellowPale yellowFracture1.5–2.5NonmetallicRotten-egg odorCalciteUsually white, butcan be any colorWhiteCleavage3NonmetallicFizzes in acidsQuartzClear, white, rose,violet, blackWhiteFracture7NonmetallicNoneMicaBlack, clear,brown, green, yellowYellowCleavage2.5NonmetallicNoneAnalysisSample7: _______________________Sample13: ______________________Sample23: ______________________Sample25: -_____________________Sample26: ______________________Sample27: ______________________
